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Mainstage Variable

dobm

Month of birth

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

Datafile

indresp

Index terms

Value label	Value	Absolute frequency	Relative frequency
missing	-9	2	0.01%
proxy	-7	734	5.09%
January	1	1157	8.02%
February	2	1087	7.54%
March	3	1254	8.7%
April	4	1163	8.07%
May	5	1185	8.22%
June	6	1117	7.75%
July	7	1122	7.78%
August	8	1190	8.25%
September	9	1165	8.08%
October	10	1109	7.69%
November	11	1038	7.2%
December	12	1096	7.6%
	Total	14419	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.42	736	1.0	12.0	3.43	13683

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
proxy	-7	683	4.59%
January	1	1181	7.94%
February	2	1119	7.52%
March	3	1290	8.67%
April	4	1200	8.07%
May	5	1234	8.3%
June	6	1176	7.91%
July	7	1177	7.91%
August	8	1228	8.26%
September	9	1194	8.03%
October	10	1150	7.73%
November	11	1093	7.35%
December	12	1147	7.71%
	Total	14873	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	684	1.0	12.0	3.42	14189

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.02%
proxy	-7	677	4.4%
January	1	1231	8.0%
February	2	1154	7.5%
March	3	1303	8.47%
April	4	1231	8.0%
May	5	1284	8.34%
June	6	1235	8.02%
July	7	1227	7.97%
August	8	1275	8.28%
September	9	1229	7.98%
October	10	1187	7.71%
November	11	1161	7.54%
December	12	1195	7.76%
	Total	15392	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.46	680	1.0	12.0	3.42	14712

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	1281	7.89%
March	3	1449	8.92%
April	4	1382	8.51%
May	5	1405	8.65%
June	6	1376	8.47%
July	7	1323	8.15%
August	8	1415	8.71%
September	9	1367	8.42%
October	10	1320	8.13%
November	11	1247	7.68%
December	12	1318	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	1391	8.38%
February	2	1327	8.0%
March	3	1509	9.09%
April	4	1425	8.59%
May	5	1448	8.72%
June	6	1404	8.46%
July	7	1369	8.25%
August	8	1424	8.58%
September	9	1403	8.45%
October	10	1322	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	1630	8.64%
June	6	1580	8.37%
July	7	1591	8.43%
August	8	1656	8.78%
September	9	1562	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	1286	8.24%
February	2	1219	7.81%
March	3	1433	9.18%
April	4	1340	8.59%
May	5	1338	8.58%
June	6	1272	8.15%
July	7	1304	8.36%
August	8	1361	8.72%
September	9	1326	8.5%
October	10	1297	8.31%
November	11	1166	7.47%
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	1291	8.26%
February	2	1236	7.91%
March	3	1444	9.24%
April	4	1362	8.72%
May	5	1339	8.57%
June	6	1259	8.06%
July	7	1293	8.28%
August	8	1337	8.56%
September	9	1312	8.4%
October	10	1301	8.33%
November	11	1171	7.5%
December	12	1274	8.15%
	Total	15623	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	4	1.0	12.0	3.43	15619

Value label	Value	Absolute frequency	Relative frequency
don't know	-1	1	0.01%
January	1	864	7.92%
February	2	843	7.73%
March	3	1045	9.58%
April	4	957	8.77%
May	5	943	8.65%
June	6	878	8.05%
July	7	927	8.5%
August	8	939	8.61%
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	751	7.96%
February	2	735	7.79%
March	3	899	9.53%
April	4	821	8.7%
May	5	801	8.49%
June	6	784	8.31%
July	7	782	8.29%
August	8	790	8.37%
September	9	807	8.55%
October	10	795	8.42%
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	826	8.71%
May	5	804	8.48%
June	6	770	8.12%
July	7	786	8.29%
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
refusal	-2	6	0.06%
don't know	-1	8	0.08%
January	1	828	8.07%
February	2	785	7.65%
March	3	980	9.55%
April	4	910	8.87%
May	5	874	8.52%
June	6	836	8.14%
July	7	843	8.21%
August	8	869	8.47%
September	9	905	8.82%
October	10	816	7.95%
November	11	800	7.79%
December	12	804	7.83%
	Total	10264	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
6.44	14	1.0	12.0	3.41	10250

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The Study is led by a team at the Institute for Social and Economic Research (ISER) at the University of Essex.