Main survey variable: birthm dob month

dob month

This variable is only available in the Special Licence (SN 6931) and Secure Access (SN 6676) datasets.

Month of birth. Special Licence release (SN6931) only.

See DOBM_DV DOBY_DV

Datafiles

Index terms

Derived variable note:

Month of birth. Special Licence release (SN6931) only.

See DOBM_DV DOBY_DV

Derived variable note:

Uses W_BIRTHM on data file W_INDRESP
Uses BW_BIRTHM on data file BW_INDALL/

Question asked in the latest wave:

hhgrid_w14.birthm

Question label:

DOB month

Further details:
For further details about this question, please see the questionnaires

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	130	1.37%
don't know	-1	18	0.19%
January	1	798	8.42%
February	2	686	7.24%
March	3	763	8.05%
April	4	732	7.72%
May	5	793	8.37%
June	6	764	8.06%
July	7	800	8.44%
August	8	832	8.78%
September	9	856	9.03%
October	10	786	8.29%
November	11	755	7.97%
December	12	764	8.06%
	Total	9477	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.56	148	1.0	12.0	3.42	9329

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	7	0.1%
don't know	-1	5	0.07%
January	1	614	8.63%
February	2	506	7.11%
March	3	616	8.65%
April	4	534	7.5%
May	5	593	8.33%
June	6	542	7.61%
July	7	647	9.09%
August	8	617	8.67%
September	9	659	9.26%
October	10	610	8.57%
November	11	572	8.04%
December	12	596	8.37%
	Total	7118	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.58	12	1.0	12.0	3.44	7106

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
refusal	-2	11	0.14%
don't know	-1	9	0.12%
January	1	646	8.46%
February	2	546	7.15%
March	3	643	8.42%
April	4	604	7.91%
May	5	630	8.25%
June	6	593	7.77%
July	7	670	8.78%
August	8	663	8.68%
September	9	706	9.25%
October	10	657	8.61%
November	11	604	7.91%
December	12	651	8.53%
	Total	7634	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.59	21	1.0	12.0	3.43	7613

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	11	0.13%
don't know	-1	1	0.01%
January	1	739	8.63%
February	2	622	7.26%
March	3	709	8.27%
April	4	675	7.88%
May	5	702	8.19%
June	6	678	7.91%
July	7	729	8.51%
August	8	741	8.65%
September	9	795	9.28%
October	10	746	8.71%
November	11	680	7.94%
December	12	740	8.64%
	Total	8568	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.59	12	1.0	12.0	3.45	8556

Value label	Value	Absolute frequency	Relative frequency
inapplicable	-8	1	0.01%
refusal	-2	8	0.08%
don't know	-1	5	0.05%
January	1	821	8.59%
February	2	696	7.28%
March	3	793	8.3%
April	4	771	8.07%
May	5	780	8.16%
June	6	761	7.96%
July	7	831	8.69%
August	8	811	8.48%
September	9	869	9.09%
October	10	817	8.55%
November	11	762	7.97%
December	12	833	8.71%
	Total	9559	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.58	14	1.0	12.0	3.45	9545

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	3	0.03%
don't know	-1	5	0.05%
January	1	873	8.47%
February	2	758	7.35%
March	3	875	8.49%
April	4	822	7.98%
May	5	846	8.21%
June	6	825	8.01%
July	7	911	8.84%
August	8	853	8.28%
September	9	925	8.98%
October	10	888	8.62%
November	11	816	7.92%
December	12	906	8.79%
	Total	10306	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.58	8	1.0	12.0	3.45	10298

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.03%
refusal	-2	22	0.19%
don't know	-1	13	0.11%
January	1	973	8.43%
February	2	873	7.56%
March	3	954	8.26%
April	4	917	7.94%
May	5	917	7.94%
June	6	930	8.05%
July	7	1009	8.74%
August	8	973	8.43%
September	9	1057	9.15%
October	10	948	8.21%
November	11	937	8.11%
December	12	1022	8.85%
	Total	11548	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.59	38	1.0	12.0	3.45	11510

Value label	Value	Absolute frequency	Relative frequency
missing	-9	12	0.1%
refusal	-2	19	0.15%
don't know	-1	27	0.21%
January	1	1058	8.42%
February	2	968	7.7%
March	3	1028	8.18%
April	4	974	7.75%
May	5	978	7.78%
June	6	1009	8.03%
July	7	1111	8.84%
August	8	1039	8.27%
September	9	1117	8.89%
October	10	1081	8.6%
November	11	1017	8.09%
December	12	1130	8.99%
	Total	12568	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.6	58	1.0	12.0	3.47	12510

Value label	Value	Absolute frequency	Relative frequency
missing	-9	184	1.41%
January	1	1097	8.43%
February	2	1002	7.7%
March	3	1059	8.14%
April	4	997	7.66%
May	5	1003	7.71%
June	6	1033	7.94%
July	7	1133	8.71%
August	8	1095	8.41%
September	9	1136	8.73%
October	10	1074	8.25%
November	11	1057	8.12%
December	12	1145	8.8%
	Total	13015	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.59	184	1.0	12.0	3.47	12831

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
refusal	-2	3	0.02%
don't know	-1	6	0.05%
January	1	1111	8.61%
February	2	1022	7.92%
March	3	1014	7.86%
April	4	1018	7.89%
May	5	1039	8.06%
June	6	1083	8.4%
July	7	1131	8.77%
August	8	1091	8.46%
September	9	1129	8.75%
October	10	1074	8.33%
November	11	1041	8.07%
December	12	1135	8.8%
	Total	12898	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.56	10	1.0	12.0	3.46	12888

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
refusal	-2	7	0.05%
don't know	-1	15	0.11%
January	1	1228	8.68%
February	2	1096	7.75%
March	3	1103	7.8%
April	4	1127	7.97%
May	5	1153	8.15%
June	6	1176	8.31%
July	7	1258	8.89%
August	8	1193	8.43%
September	9	1235	8.73%
October	10	1185	8.38%
November	11	1138	8.04%
December	12	1231	8.7%
	Total	14148	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.56	25	1.0	12.0	3.45	14123

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	10	0.06%
don't know	-1	15	0.1%
January	1	1355	8.73%
February	2	1226	7.9%
March	3	1212	7.81%
April	4	1253	8.07%
May	5	1241	7.99%
June	6	1286	8.28%
July	7	1361	8.77%
August	8	1323	8.52%
September	9	1337	8.61%
October	10	1308	8.43%
November	11	1263	8.14%
December	12	1333	8.59%
	Total	15523	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.55	25	1.0	12.0	3.46	15498

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	36	0.21%
don't know	-1	38	0.22%
January	1	1503	8.77%
February	2	1351	7.88%
March	3	1302	7.6%
April	4	1362	7.95%
May	5	1371	8.0%
June	6	1397	8.15%
July	7	1492	8.71%
August	8	1481	8.64%
September	9	1481	8.64%
October	10	1462	8.53%
November	11	1380	8.05%
December	12	1482	8.65%
	Total	17138	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.56	74	1.0	12.0	3.46	17064

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	234	1.31%
don't know	-1	117	0.66%
January	1	1523	8.54%
February	2	1415	7.94%
March	3	1317	7.39%
April	4	1401	7.86%
May	5	1457	8.17%
June	6	1427	8.0%
July	7	1510	8.47%
August	8	1540	8.64%
September	9	1473	8.26%
October	10	1531	8.59%
November	11	1383	7.76%
December	12	1499	8.41%
	Total	17827	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.55	351	1.0	12.0	3.45	17476

Value label	Value	Absolute frequency	Relative frequency
missing	-9	11	0.02%
inapplicable	-8	5	0.01%
refusal	-2	421	0.76%
don't know	-1	141	0.25%
January	1	4701	8.49%
February	2	4259	7.69%
March	3	4743	8.56%
April	4	4691	8.47%
May	5	4729	8.54%
June	6	4567	8.24%
July	7	4748	8.57%
August	8	4621	8.34%
September	9	4562	8.23%
October	10	4672	8.43%
November	11	4193	7.57%
December	12	4337	7.83%
	Total	55401	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	578	1.0	12.0	3.42	54823

Value label	Value	Absolute frequency	Relative frequency
missing	-9	17	0.04%
inapplicable	-8	4	0.01%
refusal	-2	19	0.05%
don't know	-1	34	0.08%
January	1	3578	8.6%
February	2	3258	7.83%
March	3	3585	8.62%
April	4	3581	8.61%
May	5	3538	8.5%
June	6	3426	8.24%
July	7	3668	8.82%
August	8	3484	8.37%
September	9	3463	8.32%
October	10	3480	8.37%
November	11	3167	7.61%
December	12	3299	7.93%
	Total	41601	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	74	1.0	12.0	3.42	41527

Value label	Value	Absolute frequency	Relative frequency
missing	-9	14	0.03%
refusal	-2	30	0.07%
don't know	-1	60	0.14%
January	1	3753	8.61%
February	2	3428	7.87%
March	3	3713	8.52%
April	4	3795	8.71%
May	5	3710	8.51%
June	6	3582	8.22%
July	7	3774	8.66%
August	8	3643	8.36%
September	9	3628	8.33%
October	10	3657	8.39%
November	11	3347	7.68%
December	12	3443	7.9%
	Total	43577	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	104	1.0	12.0	3.42	43473

Value label	Value	Absolute frequency	Relative frequency
missing	-9	15	0.03%
inapplicable	-8	1	0.0%
refusal	-2	23	0.05%
don't know	-1	42	0.09%
January	1	4089	8.71%
February	2	3655	7.78%
March	3	4016	8.55%
April	4	4082	8.69%
May	5	3998	8.51%
June	6	3857	8.21%
July	7	4007	8.53%
August	8	3931	8.37%
September	9	3921	8.35%
October	10	3936	8.38%
November	11	3608	7.68%
December	12	3784	8.06%
	Total	46965	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	81	1.0	12.0	3.43	46884

Value label	Value	Absolute frequency	Relative frequency
missing	-9	19	0.04%
inapplicable	-8	1	0.0%
refusal	-2	25	0.05%
don't know	-1	49	0.1%
January	1	4335	8.65%
February	2	3907	7.8%
March	3	4292	8.56%
April	4	4375	8.73%
May	5	4263	8.51%
June	6	4090	8.16%
July	7	4309	8.6%
August	8	4193	8.37%
September	9	4141	8.26%
October	10	4190	8.36%
November	11	3863	7.71%
December	12	4061	8.1%
	Total	50113	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	94	1.0	12.0	3.43	50019

Value label	Value	Absolute frequency	Relative frequency
missing	-9	32	0.06%
refusal	-2	15	0.03%
don't know	-1	77	0.15%
January	1	4597	8.72%
February	2	4113	7.81%
March	3	4524	8.59%
April	4	4548	8.63%
May	5	4487	8.52%
June	6	4369	8.29%
July	7	4519	8.58%
August	8	4344	8.24%
September	9	4352	8.26%
October	10	4413	8.37%
November	11	4048	7.68%
December	12	4256	8.08%
	Total	52694	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	124	1.0	12.0	3.43	52570

Value label	Value	Absolute frequency	Relative frequency
missing	-9	31	0.05%
refusal	-2	41	0.07%
don't know	-1	114	0.2%
January	1	4971	8.78%
February	2	4416	7.8%
March	3	4808	8.49%
April	4	4851	8.57%
May	5	4809	8.5%
June	6	4660	8.23%
July	7	4846	8.56%
August	8	4650	8.21%
September	9	4716	8.33%
October	10	4697	8.3%
November	11	4338	7.66%
December	12	4660	8.23%
	Total	56608	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	186	1.0	12.0	3.44	56422

Value label	Value	Absolute frequency	Relative frequency
missing	-9	56	0.09%
refusal	-2	53	0.09%
don't know	-1	203	0.34%
January	1	5213	8.7%
February	2	4687	7.82%
March	3	5111	8.53%
April	4	5063	8.45%
May	5	5034	8.4%
June	6	4949	8.26%
July	7	5192	8.66%
August	8	4949	8.26%
September	9	4936	8.23%
October	10	4984	8.31%
November	11	4578	7.64%
December	12	4933	8.23%
	Total	59941	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	312	1.0	12.0	3.44	59629

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1132	1.75%
January	1	5685	8.79%
February	2	5067	7.83%
March	3	5411	8.36%
April	4	5323	8.23%
May	5	5400	8.34%
June	6	5284	8.17%
July	7	5464	8.44%
August	8	5333	8.24%
September	9	5212	8.05%
October	10	5297	8.19%
November	11	4904	7.58%
December	12	5200	8.04%
	Total	64712	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	1132	1.0	12.0	3.45	63580

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.0%
refusal	-2	43	0.07%
don't know	-1	164	0.27%
January	1	5382	8.75%
February	2	4908	7.98%
March	3	5250	8.53%
April	4	5183	8.43%
May	5	5187	8.43%
June	6	5172	8.41%
July	7	5255	8.54%
August	8	5197	8.45%
September	9	4998	8.13%
October	10	5138	8.35%
November	11	4684	7.61%
December	12	4950	8.05%
	Total	61512	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.43	208	1.0	12.0	3.44	61304

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.0%
refusal	-2	49	0.07%
don't know	-1	187	0.28%
January	1	5811	8.85%
February	2	5169	7.88%
March	3	5630	8.58%
April	4	5494	8.37%
May	5	5553	8.46%
June	6	5511	8.4%
July	7	5621	8.57%
August	8	5532	8.43%
September	9	5342	8.14%
October	10	5439	8.29%
November	11	4984	7.59%
December	12	5301	8.08%
	Total	65626	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.43	239	1.0	12.0	3.44	65387

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	53	0.07%
don't know	-1	204	0.29%
January	1	6263	8.86%
February	2	5638	7.98%
March	3	6051	8.56%
April	4	5929	8.39%
May	5	5966	8.44%
June	6	5912	8.37%
July	7	6013	8.51%
August	8	5907	8.36%
September	9	5776	8.17%
October	10	5849	8.28%
November	11	5408	7.65%
December	12	5702	8.07%
	Total	70671	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.43	257	1.0	12.0	3.44	70414

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	147	0.19%
don't know	-1	376	0.49%
January	1	6838	8.82%
February	2	6136	7.92%
March	3	6627	8.55%
April	4	6461	8.34%
May	5	6546	8.45%
June	6	6482	8.36%
July	7	6578	8.49%
August	8	6475	8.36%
September	9	6344	8.19%
October	10	6414	8.28%
November	11	5867	7.57%
December	12	6204	8.01%
	Total	77495	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	523	1.0	12.0	3.44	76972

Value label	Value	Absolute frequency	Relative frequency
missing	-9	33	0.04%
refusal	-2	773	1.0%
don't know	-1	767	0.99%
January	1	6827	8.83%
February	2	5998	7.76%
March	3	6474	8.37%
April	4	6321	8.18%
May	5	6458	8.35%
June	6	6419	8.3%
July	7	6498	8.41%
August	8	6345	8.21%
September	9	6171	7.98%
October	10	6350	8.21%
November	11	5797	7.5%
December	12	6077	7.86%
	Total	77308	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	1573	1.0	12.0	3.44	75735

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.0%
don't know	-1	130	0.64%
January	1	1731	8.58%
February	2	1535	7.61%
March	3	1796	8.9%
April	4	1707	8.46%
May	5	1707	8.46%
June	6	1706	8.46%
July	7	1672	8.29%
August	8	1729	8.57%
September	9	1717	8.51%
October	10	1623	8.04%
November	11	1535	7.61%
December	12	1588	7.87%
	Total	20177	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.43	131	1.0	12.0	3.42	20046

Value label	Value	Absolute frequency	Relative frequency
don't know	-1	114	0.55%
January	1	1755	8.47%
February	2	1582	7.64%
March	3	1862	8.99%
April	4	1747	8.43%
May	5	1766	8.53%
June	6	1746	8.43%
July	7	1722	8.31%
August	8	1794	8.66%
September	9	1751	8.45%
October	10	1668	8.05%
November	11	1570	7.58%
December	12	1638	7.91%
	Total	20715	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	114	1.0	12.0	3.42	20601

Value label	Value	Absolute frequency	Relative frequency
don't know	-1	132	0.62%
January	1	1804	8.43%
February	2	1637	7.65%
March	3	1887	8.82%
April	4	1801	8.42%
May	5	1823	8.52%
June	6	1820	8.51%
July	7	1782	8.33%
August	8	1843	8.62%
September	9	1801	8.42%
October	10	1715	8.02%
November	11	1640	7.67%
December	12	1704	7.97%
	Total	21389	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	132	1.0	12.0	3.42	21257

Value label	Value	Absolute frequency	Relative frequency
don't know	-1	84	0.39%
January	1	1842	8.48%
February	2	1674	7.7%
March	3	1894	8.72%
April	4	1850	8.51%
May	5	1868	8.6%
June	6	1833	8.44%
July	7	1802	8.29%
August	8	1881	8.66%
September	9	1812	8.34%
October	10	1758	8.09%
November	11	1679	7.73%
December	12	1753	8.07%
	Total	21730	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	84	1.0	12.0	3.42	21646

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	2	0.01%
don't know	-1	92	0.42%
January	1	1868	8.44%
February	2	1708	7.72%
March	3	1952	8.82%
April	4	1885	8.52%
May	5	1902	8.6%
June	6	1856	8.39%
July	7	1820	8.23%
August	8	1910	8.63%
September	9	1859	8.4%
October	10	1803	8.15%
November	11	1704	7.7%
December	12	1766	7.98%
	Total	22127	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	94	1.0	12.0	3.42	22033

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.0%
don't know	-1	87	0.39%
January	1	1906	8.44%
February	2	1748	7.74%
March	3	2000	8.86%
April	4	1948	8.63%
May	5	1934	8.57%
June	6	1901	8.42%
July	7	1853	8.21%
August	8	1942	8.6%
September	9	1890	8.37%
October	10	1824	8.08%
November	11	1728	7.65%
December	12	1812	8.03%
	Total	22574	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	88	1.0	12.0	3.42	22486

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.0%
don't know	-1	117	0.5%
January	1	1996	8.52%
February	2	1801	7.69%
March	3	2096	8.94%
April	4	2031	8.67%
May	5	2026	8.65%
June	6	1969	8.4%
July	7	1926	8.22%
August	8	2000	8.53%
September	9	1974	8.42%
October	10	1878	8.01%
November	11	1746	7.45%
December	12	1874	8.0%
	Total	23435	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	118	1.0	12.0	3.42	23317

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	3	0.01%
don't know	-1	112	0.42%
January	1	2246	8.45%
February	2	2061	7.75%
March	3	2400	9.03%
April	4	2315	8.71%
May	5	2280	8.58%
June	6	2213	8.32%
July	7	2211	8.32%
August	8	2286	8.6%
September	9	2218	8.34%
October	10	2123	7.99%
November	11	1988	7.48%
December	12	2130	8.01%
	Total	26586	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	115	1.0	12.0	3.42	26471

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	5	0.02%
don't know	-1	110	0.51%
January	1	1800	8.33%
February	2	1682	7.79%
March	3	1960	9.07%
April	4	1837	8.5%
May	5	1818	8.42%
June	6	1790	8.29%
July	7	1818	8.42%
August	8	1846	8.55%
September	9	1842	8.53%
October	10	1765	8.17%
November	11	1584	7.33%
December	12	1745	8.08%
	Total	21602	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	115	1.0	12.0	3.42	21487

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	5	0.02%
don't know	-1	129	0.6%
January	1	1803	8.36%
February	2	1682	7.8%
March	3	1938	8.99%
April	4	1854	8.6%
May	5	1830	8.49%
June	6	1764	8.18%
July	7	1812	8.4%
August	8	1833	8.5%
September	9	1810	8.39%
October	10	1752	8.12%
November	11	1600	7.42%
December	12	1754	8.13%
	Total	21566	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	134	1.0	12.0	3.42	21432

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	3	0.02%
don't know	-1	52	0.35%
January	1	1199	8.08%
February	2	1156	7.79%
March	3	1388	9.36%
April	4	1275	8.59%
May	5	1279	8.62%
June	6	1205	8.12%
July	7	1262	8.51%
August	8	1264	8.52%
September	9	1236	8.33%
October	10	1199	8.08%
November	11	1107	7.46%
December	12	1210	8.16%
	Total	14835	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	55	1.0	12.0	3.42	14780

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.01%
don't know	-1	49	0.33%
January	1	1209	8.04%
February	2	1177	7.82%
March	3	1408	9.36%
April	4	1296	8.62%
May	5	1271	8.45%
June	6	1243	8.26%
July	7	1267	8.42%
August	8	1279	8.5%
September	9	1266	8.42%
October	10	1241	8.25%
November	11	1127	7.49%
December	12	1208	8.03%
	Total	15042	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	50	1.0	12.0	3.41	14992

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.01%
don't know	-1	52	0.41%
January	1	1028	8.08%
February	2	1002	7.88%
March	3	1208	9.5%
April	4	1064	8.36%
May	5	1083	8.51%
June	6	1061	8.34%
July	7	1066	8.38%
August	8	1056	8.3%
September	9	1077	8.47%
October	10	1047	8.23%
November	11	969	7.62%
December	12	1006	7.91%
	Total	12720	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.43	53	1.0	12.0	3.42	12667

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	10	0.08%
don't know	-1	51	0.41%
January	1	1000	7.97%
February	2	991	7.9%
March	3	1191	9.49%
April	4	1040	8.29%
May	5	1070	8.53%
June	6	1037	8.26%
July	7	1039	8.28%
August	8	1040	8.29%
September	9	1076	8.57%
October	10	1048	8.35%
November	11	956	7.62%
December	12	1000	7.97%
	Total	12549	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	61	1.0	12.0	3.42	12488

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	6	0.05%
don't know	-1	39	0.3%
January	1	1048	8.16%
February	2	1014	7.89%
March	3	1218	9.48%
April	4	1083	8.43%
May	5	1088	8.47%
June	6	1051	8.18%
July	7	1066	8.3%
August	8	1057	8.23%
September	9	1108	8.62%
October	10	1056	8.22%
November	11	992	7.72%
December	12	1025	7.98%
	Total	12851	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	45	1.0	12.0	3.42	12806

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	6	0.05%
don't know	-1	56	0.43%
January	1	1051	8.02%
February	2	1026	7.83%
March	3	1226	9.36%
April	4	1136	8.67%
May	5	1097	8.37%
June	6	1065	8.13%
July	7	1078	8.23%
August	8	1089	8.31%
September	9	1148	8.76%
October	10	1065	8.13%
November	11	1017	7.76%
December	12	1044	7.97%
	Total	13104	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	62	1.0	12.0	3.42	13042

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	22	0.17%
don't know	-1	26	0.2%
January	1	1056	8.03%
February	2	1013	7.7%
March	3	1232	9.37%
April	4	1144	8.7%
May	5	1116	8.49%
June	6	1072	8.15%
July	7	1118	8.5%
August	8	1089	8.28%
September	9	1136	8.64%
October	10	1069	8.13%
November	11	1023	7.78%
December	12	1035	7.87%
	Total	13151	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	48	1.0	12.0	3.41	13103

Value label	Value	Absolute frequency	Relative frequency
missing	-9	4	0.03%
refusal	-2	12	0.09%
don't know	-1	48	0.35%
January	1	1126	8.14%
February	2	1062	7.67%
March	3	1291	9.33%
April	4	1194	8.63%
May	5	1171	8.46%
June	6	1128	8.15%
July	7	1166	8.42%
August	8	1150	8.31%
September	9	1213	8.76%
October	10	1108	8.01%
November	11	1089	7.87%
December	12	1078	7.79%
	Total	13840	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	64	1.0	12.0	3.41	13776

Value label	Value	Absolute frequency	Relative frequency
inapplicable	-8	2	0.01%
refusal	-2	124	0.35%
don't know	-1	20	0.06%
January	1	3039	8.57%
February	2	2763	7.79%
March	3	3161	8.91%
April	4	3042	8.58%
May	5	3030	8.54%
June	6	2991	8.43%
July	7	3092	8.72%
August	8	2909	8.2%
September	9	2884	8.13%
October	10	3005	8.47%
November	11	2642	7.45%
December	12	2767	7.8%
	Total	35471	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.41	146	1.0	12.0	3.42	35325

Value label	Value	Absolute frequency	Relative frequency
don't know	-1	2	0.01%
January	1	2423	8.65%
February	2	2207	7.88%
March	3	2434	8.69%
April	4	2470	8.82%
May	5	2405	8.59%
June	6	2360	8.43%
July	7	2427	8.67%
August	8	2336	8.34%
September	9	2281	8.15%
October	10	2333	8.33%
November	11	2118	7.56%
December	12	2202	7.86%
	Total	27998	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.41	2	1.0	12.0	3.42	27996

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.01%
refusal	-2	1	0.0%
don't know	-1	3	0.01%
January	1	2545	8.69%
February	2	2356	8.05%
March	3	2563	8.76%
April	4	2593	8.86%
May	5	2511	8.58%
June	6	2434	8.32%
July	7	2491	8.51%
August	8	2428	8.29%
September	9	2394	8.18%
October	10	2438	8.33%
November	11	2231	7.62%
December	12	2280	7.79%
	Total	29271	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.4	7	1.0	12.0	3.43	29264

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.01%
refusal	-2	2	0.01%
don't know	-1	7	0.02%
January	1	2812	8.79%
February	2	2543	7.94%
March	3	2804	8.76%
April	4	2846	8.89%
May	5	2716	8.49%
June	6	2635	8.23%
July	7	2703	8.44%
August	8	2651	8.28%
September	9	2624	8.2%
October	10	2682	8.38%
November	11	2442	7.63%
December	12	2538	7.93%
	Total	32008	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.41	12	1.0	12.0	3.43	31996

Value label	Value	Absolute frequency	Relative frequency
missing	-9	5	0.01%
refusal	-2	1	0.0%
don't know	-1	11	0.03%
January	1	2973	8.66%
February	2	2714	7.91%
March	3	3018	8.79%
April	4	3062	8.92%
May	5	2969	8.65%
June	6	2839	8.27%
July	7	2940	8.57%
August	8	2844	8.29%
September	9	2785	8.12%
October	10	2836	8.26%
November	11	2622	7.64%
December	12	2700	7.87%
	Total	34319	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.4	17	1.0	12.0	3.42	34302

Value label	Value	Absolute frequency	Relative frequency
missing	-9	11	0.03%
refusal	-2	2	0.01%
don't know	-1	15	0.04%
January	1	3173	8.8%
February	2	2862	7.94%
March	3	3142	8.71%
April	4	3188	8.84%
May	5	3066	8.5%
June	6	3002	8.33%
July	7	3045	8.44%
August	8	2970	8.24%
September	9	2914	8.08%
October	10	3028	8.4%
November	11	2765	7.67%
December	12	2875	7.97%
	Total	36058	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.41	28	1.0	12.0	3.44	36030

Value label	Value	Absolute frequency	Relative frequency
missing	-9	10	0.03%
refusal	-2	4	0.01%
don't know	-1	25	0.06%
January	1	3492	8.89%
February	2	3102	7.89%
March	3	3392	8.63%
April	4	3423	8.71%
May	5	3396	8.64%
June	6	3274	8.33%
July	7	3343	8.51%
August	8	3208	8.16%
September	9	3148	8.01%
October	10	3300	8.4%
November	11	2989	7.61%
December	12	3188	8.11%
	Total	39294	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.41	39	1.0	12.0	3.44	39255

Value label	Value	Absolute frequency	Relative frequency
missing	-9	10	0.02%
refusal	-2	6	0.01%
don't know	-1	46	0.11%
January	1	3685	8.74%
February	2	3350	7.94%
March	3	3656	8.67%
April	4	3668	8.7%
May	5	3628	8.6%
June	6	3500	8.3%
July	7	3633	8.62%
August	8	3488	8.27%
September	9	3385	8.03%
October	10	3512	8.33%
November	11	3188	7.56%
December	12	3415	8.1%
	Total	42170	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	62	1.0	12.0	3.43	42108

Value label	Value	Absolute frequency	Relative frequency
missing	-9	372	0.82%
January	1	4008	8.87%
February	2	3562	7.88%
March	3	3893	8.61%
April	4	3843	8.5%
May	5	3861	8.54%
June	6	3765	8.33%
July	7	3831	8.48%
August	8	3717	8.22%
September	9	3591	7.95%
October	10	3769	8.34%
November	11	3410	7.55%
December	12	3570	7.9%
	Total	45192	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.4	372	1.0	12.0	3.44	44820

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	8	0.02%
don't know	-1	26	0.06%
January	1	3961	8.83%
February	2	3585	8.0%
March	3	3934	8.77%
April	4	3865	8.62%
May	5	3852	8.59%
June	6	3755	8.37%
July	7	3815	8.51%
August	8	3780	8.43%
September	9	3595	8.02%
October	10	3773	8.41%
November	11	3383	7.55%
December	12	3505	7.82%
	Total	44837	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.39	34	1.0	12.0	3.43	44803

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	9	0.02%
don't know	-1	39	0.08%
January	1	4160	8.84%
February	2	3726	7.92%
March	3	4221	8.97%
April	4	4000	8.5%
May	5	4018	8.54%
June	6	3952	8.4%
July	7	4003	8.5%
August	8	3986	8.47%
September	9	3764	8.0%
October	10	3926	8.34%
November	11	3527	7.49%
December	12	3743	7.95%
	Total	47074	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.4	48	1.0	12.0	3.43	47026

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	5	0.01%
don't know	-1	45	0.09%
January	1	4369	8.79%
February	2	3967	7.98%
March	3	4421	8.9%
April	4	4250	8.55%
May	5	4257	8.57%
June	6	4157	8.37%
July	7	4214	8.48%
August	8	4139	8.33%
September	9	4017	8.08%
October	10	4134	8.32%
November	11	3750	7.55%
December	12	3967	7.98%
	Total	49692	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.4	50	1.0	12.0	3.43	49642

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	39	0.07%
don't know	-1	59	0.11%
January	1	4813	8.82%
February	2	4343	7.96%
March	3	4890	8.96%
April	4	4657	8.53%
May	5	4701	8.61%
June	6	4608	8.44%
July	7	4613	8.45%
August	8	4539	8.32%
September	9	4438	8.13%
October	10	4496	8.24%
November	11	4090	7.5%
December	12	4282	7.85%
	Total	54568	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.39	98	1.0	12.0	3.43	54470

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	275	0.54%
don't know	-1	143	0.28%
January	1	4543	8.91%
February	2	3997	7.84%
March	3	4519	8.86%
April	4	4312	8.46%
May	5	4339	8.51%
June	6	4293	8.42%
July	7	4308	8.45%
August	8	4155	8.15%
September	9	4076	7.99%
October	10	4177	8.19%
November	11	3842	7.53%
December	12	4015	7.87%
	Total	50994	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.39	418	1.0	12.0	3.44	50576

Value label	Value	Absolute frequency	Relative frequency
missing	-9	2	0.01%
January	1	1233	8.55%
February	2	1147	7.95%
March	3	1323	9.18%
April	4	1213	8.41%
May	5	1248	8.66%
June	6	1182	8.2%
July	7	1168	8.1%
August	8	1249	8.66%
September	9	1224	8.49%
October	10	1180	8.18%
November	11	1088	7.55%
December	12	1162	8.06%
	Total	14419	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	2	1.0	12.0	3.43	14417

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
January	1	1242	8.35%
February	2	1175	7.9%
March	3	1354	9.1%
April	4	1255	8.44%
May	5	1295	8.71%
June	6	1232	8.28%
July	7	1220	8.2%
August	8	1297	8.72%
September	9	1246	8.38%
October	10	1212	8.15%
November	11	1130	7.6%
December	12	1214	8.16%
	Total	14873	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	1	1.0	12.0	3.42	14872

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
January	1	1292	8.39%
February	2	1214	7.89%
March	3	1362	8.85%
April	4	1283	8.34%
May	5	1343	8.73%
June	6	1284	8.34%
July	7	1272	8.26%
August	8	1345	8.74%
September	9	1285	8.35%
October	10	1248	8.11%
November	11	1209	7.85%
December	12	1252	8.13%
	Total	15392	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.46	3	1.0	12.0	3.43	15389

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
January	1	1319	8.45%
February	2	1232	7.89%
March	3	1381	8.84%
April	4	1316	8.43%
May	5	1356	8.68%
June	6	1296	8.3%
July	7	1279	8.19%
August	8	1366	8.75%
September	9	1302	8.34%
October	10	1253	8.02%
November	11	1233	7.9%
December	12	1281	8.2%
	Total	15617	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.46	3	1.0	12.0	3.43	15614

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
January	1	1308	8.28%
February	2	1260	7.98%
March	3	1421	9.0%
April	4	1329	8.42%
May	5	1361	8.62%
June	6	1301	8.24%
July	7	1294	8.19%
August	8	1371	8.68%
September	9	1325	8.39%
October	10	1302	8.25%
November	11	1234	7.81%
December	12	1284	8.13%
	Total	15791	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.46	1	1.0	12.0	3.43	15790

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
January	1	1352	8.33%
February	2	1280	7.88%
March	3	1449	8.92%
April	4	1384	8.52%
May	5	1406	8.66%
June	6	1374	8.46%
July	7	1324	8.15%
August	8	1415	8.71%
September	9	1366	8.41%
October	10	1319	8.12%
November	11	1247	7.68%
December	12	1319	8.12%
	Total	16238	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	3	1.0	12.0	3.42	16235

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
January	1	1390	8.38%
February	2	1327	8.0%
March	3	1511	9.1%
April	4	1423	8.57%
May	5	1450	8.74%
June	6	1403	8.45%
July	7	1368	8.24%
August	8	1423	8.57%
September	9	1404	8.46%
October	10	1323	7.97%
November	11	1240	7.47%
December	12	1332	8.03%
	Total	16597	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.41	3	1.0	12.0	3.42	16594

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
refusal	-2	2	0.01%
January	1	1555	8.24%
February	2	1471	7.8%
March	3	1740	9.22%
April	4	1636	8.67%
May	5	1629	8.63%
June	6	1582	8.39%
July	7	1588	8.42%
August	8	1657	8.78%
September	9	1563	8.28%
October	10	1504	7.97%
November	11	1407	7.46%
December	12	1532	8.12%
	Total	18867	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.43	3	1.0	12.0	3.41	18864

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.01%
January	1	1283	8.22%
February	2	1218	7.81%
March	3	1432	9.18%
April	4	1342	8.6%
May	5	1335	8.56%
June	6	1275	8.17%
July	7	1304	8.36%
August	8	1362	8.73%
September	9	1327	8.5%
October	10	1297	8.31%
November	11	1167	7.48%
December	12	1260	8.08%
	Total	15603	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	1	1.0	12.0	3.42	15602

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
refusal	-2	1	0.01%
January	1	1287	8.24%
February	2	1235	7.91%
March	3	1443	9.24%
April	4	1363	8.72%
May	5	1337	8.56%
June	6	1261	8.07%
July	7	1294	8.28%
August	8	1337	8.56%
September	9	1313	8.4%
October	10	1302	8.33%
November	11	1175	7.52%
December	12	1272	8.14%
	Total	15623	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	4	1.0	12.0	3.42	15619

Value label	Value	Absolute frequency	Relative frequency
don't know	-1	1	0.01%
January	1	864	7.92%
February	2	842	7.72%
March	3	1044	9.57%
April	4	957	8.77%
May	5	943	8.65%
June	6	878	8.05%
July	7	928	8.51%
August	8	940	8.62%
September	9	907	8.32%
October	10	902	8.27%
November	11	820	7.52%
December	12	880	8.07%
	Total	10906	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	1	1.0	12.0	3.41	10905

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.01%
don't know	-1	2	0.02%
January	1	882	7.88%
February	2	860	7.68%
March	3	1060	9.47%
April	4	986	8.81%
May	5	948	8.47%
June	6	921	8.23%
July	7	940	8.4%
August	8	971	8.68%
September	9	950	8.49%
October	10	946	8.45%
November	11	837	7.48%
December	12	889	7.94%
	Total	11193	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	3	1.0	12.0	3.4	11190

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	1	0.01%
don't know	-1	2	0.02%
January	1	750	7.95%
February	2	736	7.8%
March	3	899	9.53%
April	4	822	8.71%
May	5	800	8.48%
June	6	784	8.31%
July	7	784	8.31%
August	8	789	8.36%
September	9	807	8.55%
October	10	794	8.41%
November	11	734	7.78%
December	12	736	7.8%
	Total	9438	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	3	1.0	12.0	3.41	9435

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	2	0.02%
don't know	-1	4	0.04%
January	1	722	7.81%
February	2	723	7.82%
March	3	874	9.45%
April	4	800	8.65%
May	5	783	8.47%
June	6	761	8.23%
July	7	757	8.18%
August	8	771	8.34%
September	9	798	8.63%
October	10	794	8.58%
November	11	719	7.77%
December	12	741	8.01%
	Total	9249	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.48	6	1.0	12.0	3.41	9243

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	3	0.03%
don't know	-1	3	0.03%
January	1	769	8.11%
February	2	741	7.82%
March	3	891	9.4%
April	4	827	8.72%
May	5	804	8.48%
June	6	770	8.12%
July	7	785	8.28%
August	8	777	8.2%
September	9	836	8.82%
October	10	794	8.37%
November	11	730	7.7%
December	12	751	7.92%
	Total	9481	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	6	1.0	12.0	3.42	9475

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	2	0.02%
don't know	-1	3	0.03%
January	1	770	8.02%
February	2	750	7.81%
March	3	904	9.42%
April	4	852	8.88%
May	5	804	8.38%
June	6	779	8.11%
July	7	779	8.11%
August	8	804	8.38%
September	9	850	8.85%
October	10	788	8.21%
November	11	751	7.82%
December	12	764	7.96%
	Total	9600	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	5	1.0	12.0	3.42	9595

Value label	Value	Absolute frequency	Relative frequency
refusal	-2	4	0.04%
don't know	-1	1	0.01%
January	1	778	7.9%
February	2	763	7.75%
March	3	940	9.55%
April	4	869	8.83%
May	5	841	8.54%
June	6	807	8.2%
July	7	816	8.29%
August	8	824	8.37%
September	9	856	8.69%
October	10	808	8.21%
November	11	764	7.76%
December	12	774	7.86%
	Total	9845	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.45	5	1.0	12.0	3.41	9840

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1748	1.05%
refusal	-2	335	0.2%
don't know	-1	92	0.06%
[Value >= 0]	1	165033	98.7%
	Total	167208	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.46	2175	1.0	12.0	3.43	165033

Value label	Value	Absolute frequency	Relative frequency
missing	-9	855	0.59%
refusal	-2	335	0.23%
don't know	-1	92	0.06%
[Value >= 0]	1	143597	99.12%
	Total	144879	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.46	1282	1.0	12.0	3.44	143597

Value label	Value	Absolute frequency	Relative frequency
missing	-9	979	2.26%
[Value >= 0]	1	42293	97.74%
	Total	43272	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	979	1.0	12.0	3.42	42293

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Create your own Stata code to extract data from the main end user licence Understanding Society dataset. Find out more

birthm

Datafiles

Index terms

Derived variable note:

Derived variable note:

Question asked in the latest wave:

hhgrid_w14.birthm

Question label:

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Saved variables

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Datafiles

Index terms

Derived variable note:

Derived variable note:

Question asked in the latest wave:

hhgrid_w14.birthm

Question label:

Wave 14 (n_birthm child)

Wave 13 (m_birthm child)

Wave 12 (l_birthm child)

Wave 11 (k_birthm child)

Wave 10 (j_birthm child)

Wave 9 (i_birthm child)

Wave 8 (h_birthm child)

Wave 7 (g_birthm child)

Wave 6 (f_birthm child)

Wave 5 (e_birthm child)

Wave 4 (d_birthm child)

Wave 3 (c_birthm child)

Wave 2 (b_birthm child)

Wave 1 (a_birthm child)

Wave 14 (n_birthm indall)

Wave 13 (m_birthm indall)

Wave 12 (l_birthm indall)

Wave 11 (k_birthm indall)

Wave 10 (j_birthm indall)

Wave 9 (i_birthm indall)

Wave 8 (h_birthm indall)

Wave 7 (g_birthm indall)

Wave 6 (f_birthm indall)

Wave 5 (e_birthm indall)

Wave 4 (d_birthm indall)

Wave 3 (c_birthm indall)

Wave 2 (b_birthm indall)

Wave 1 (a_birthm indall)

Wave B18 (br_birthm indall)

Wave B17 (bq_birthm indall)

Wave B16 (bp_birthm indall)

Wave B15 (bo_birthm indall)

Wave B14 (bn_birthm indall)

Wave B13 (bm_birthm indall)

Wave B12 (bl_birthm indall)

Wave B11 (bk_birthm indall)

Wave B10 (bj_birthm indall)

Wave B9 (bi_birthm indall)

Wave B8 (bh_birthm indall)

Wave B7 (bg_birthm indall)

Wave B6 (bf_birthm indall)

Wave B5 (be_birthm indall)

Wave B4 (bd_birthm indall)

Wave B3 (bc_birthm indall)

Wave B2 (bb_birthm indall)

Wave B1 (ba_birthm indall)

Wave 14 (n_birthm indresp)

Wave 13 (m_birthm indresp)

Wave 12 (l_birthm indresp)

Wave 11 (k_birthm indresp)

Wave 10 (j_birthm indresp)

Wave 9 (i_birthm indresp)

Wave 8 (h_birthm indresp)

Wave 7 (g_birthm indresp)

Wave 6 (f_birthm indresp)

Wave 5 (e_birthm indresp)

Wave 4 (d_birthm indresp)

Wave 3 (c_birthm indresp)

Wave 2 (b_birthm indresp)

Wave 1 (a_birthm indresp)

Wave B18 (br_birthm indresp)

Wave B17 (bq_birthm indresp)

Wave B16 (bp_birthm indresp)

Wave B15 (bo_birthm indresp)

Wave B14 (bn_birthm indresp)

Wave B13 (bm_birthm indresp)

Wave B12 (bl_birthm indresp)

Wave B11 (bk_birthm indresp)

Wave B10 (bj_birthm indresp)

Wave B9 (bi_birthm indresp)

Wave B8 (bh_birthm indresp)

Wave B7 (bg_birthm indresp)

Wave B6 (bf_birthm indresp)

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