Main survey variable: age_dv Age, derived from dob_dv and intdat_dv

Age, derived from dob_dv and intdat_dv

Datafiles

Index term

Demographic characteristics Age

Derived variable note:

Age, in completed years, at the time of interview. Calculated from the date of birth held in the sample administration database and the interview date. This is conceptually different from dvage which measures the age at the time eligibility for the interview is determined (typically at the time of household enumeration). Uses current and previous wave values of dvage to compute doby_dv where missing. Recorded to missing sample members whose interview outcome is inconsistent with the suggested age +/- one year. DOB month dobm_dv is made available in UKDS SN 6931 only. DOB day (dobd_dv) is made available in UKDS SN 6676 only.

Uses intdatd_if, intdatm_if, intdaty_if, intdatd_dv, intdatm_dv, intdaty_dv, doby_if, dvage, doby_dv, dobm_dv, dobd_dv.

Derived variable note:

Uses DOBD_DV DOBM_DV DOBY_DV INTDATM_DV INTDATY_DV INTDATD_DV DVAGE/

Value label	Value	Absolute frequency	Relative frequency
missing	-9	21	0.27%
[Value >= 0]	1	7902	99.73%
	Total	7923	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.31	21	0	16.0	4.57	7902

Value label	Value	Absolute frequency	Relative frequency
missing	-9	39	0.41%
[Value >= 0]	1	9438	99.59%
	Total	9477	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.18	39	0	16.0	4.57	9438

Value label	Value	Absolute frequency	Relative frequency
missing	-9	11	0.15%
[Value >= 0]	1	7107	99.85%
	Total	7118	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.39	11	0	16.0	4.52	7107

Value label	Value	Absolute frequency	Relative frequency
missing	-9	16	0.21%
[Value >= 0]	1	7618	99.79%
	Total	7634	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.31	16	0	16.0	4.51	7618

Value label	Value	Absolute frequency	Relative frequency
missing	-9	8	0.09%
[Value >= 0]	1	8560	99.91%
	Total	8568	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.19	8	0	16.0	4.47	8560

Value label	Value	Absolute frequency	Relative frequency
missing	-9	9	0.09%
[Value >= 0]	1	9550	99.91%
	Total	9559	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.15	9	0	16.0	4.46	9550

Value label	Value	Absolute frequency	Relative frequency
missing	-9	4	0.04%
[Value >= 0]	1	10302	99.96%
	Total	10306	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
8.04	4	0	16.0	4.43	10302

Value label	Value	Absolute frequency	Relative frequency
missing	-9	26	0.23%
[Value >= 0]	1	11522	99.77%
	Total	11548	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.98	26	0	16.0	4.44	11522

Value label	Value	Absolute frequency	Relative frequency
missing	-9	29	0.23%
[Value >= 0]	1	12539	99.77%
	Total	12568	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.8	29	0	16.0	4.47	12539

Value label	Value	Absolute frequency	Relative frequency
missing	-9	56	0.43%
[Value >= 0]	1	12959	99.57%
	Total	13015	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.48	56	0	76.0	4.69	12959

Value label	Value	Absolute frequency	Relative frequency
missing	-9	2	0.02%
[Value >= 0]	1	12896	99.98%
	Total	12898	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.69	2	0	16.0	4.55	12896

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.01%
[Value >= 0]	1	14147	99.99%
	Total	14148	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.64	1	0	16.0	4.57	14147

Value label	Value	Absolute frequency	Relative frequency
missing	-9	8	0.05%
[Value >= 0]	1	15515	99.95%
	Total	15523	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.59	8	0	16.0	4.6	15515

Value label	Value	Absolute frequency	Relative frequency
missing	-9	10	0.06%
[Value >= 0]	1	17128	99.94%
	Total	17138	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.56	10	0	16.0	4.61	17128

Value label	Value	Absolute frequency	Relative frequency
missing	-9	8	0.04%
[Value >= 0]	1	17819	99.96%
	Total	17827	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
7.38	8	0	16.0	4.67	17819

Value label	Value	Absolute frequency	Relative frequency
missing	-9	39	0.08%
[Value >= 0]	1	48857	99.92%
	Total	48896	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
42.98	39	0	109.0	23.45	48857

Value label	Value	Absolute frequency	Relative frequency
missing	-9	158	0.29%
[Value >= 0]	1	55242	99.71%
	Total	55400	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
42.04	158	0	107.0	23.38	55242

Value label	Value	Absolute frequency	Relative frequency
missing	-9	26	0.06%
[Value >= 0]	1	41575	99.94%
	Total	41601	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
42.19	26	0	106.0	23.32	41575

Value label	Value	Absolute frequency	Relative frequency
missing	-9	20	0.05%
[Value >= 0]	1	43557	99.95%
	Total	43577	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
41.84	20	0	120.0	23.33	43557

Value label	Value	Absolute frequency	Relative frequency
missing	-9	14	0.03%
[Value >= 0]	1	46951	99.97%
	Total	46965	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
41.31	14	0	104.0	23.41	46951

Value label	Value	Absolute frequency	Relative frequency
missing	-9	20	0.04%
[Value >= 0]	1	50093	99.96%
	Total	50113	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
40.69	20	0	103.0	23.4	50093

Value label	Value	Absolute frequency	Relative frequency
missing	-9	18	0.03%
[Value >= 0]	1	52676	99.97%
	Total	52694	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
40.12	18	0	103.0	23.34	52676

Value label	Value	Absolute frequency	Relative frequency
missing	-9	52	0.09%
[Value >= 0]	1	56556	99.91%
	Total	56608	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
39.51	52	0	102.0	23.29	56556

Value label	Value	Absolute frequency	Relative frequency
missing	-9	65	0.11%
[Value >= 0]	1	59876	99.89%
	Total	59941	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
38.85	65	0	101.0	23.22	59876

Value label	Value	Absolute frequency	Relative frequency
missing	-9	180	0.28%
[Value >= 0]	1	64532	99.72%
	Total	64712	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
38.29	180	0	102.0	23.1	64532

Value label	Value	Absolute frequency	Relative frequency
missing	-9	2	0.0%
[Value >= 0]	1	61510	100.0%
	Total	61512	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
38.88	2	0	101.0	23.29	61510

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.0%
[Value >= 0]	1	65625	100.0%
	Total	65626	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
38.29	1	0	104.0	23.16	65625

Value label	Value	Absolute frequency	Relative frequency
missing	-9	9	0.01%
[Value >= 0]	1	70662	99.99%
	Total	70671	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
37.87	9	0	104.0	23.08	70662

Value label	Value	Absolute frequency	Relative frequency
missing	-9	12	0.02%
[Value >= 0]	1	77483	99.98%
	Total	77495	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
37.42	12	0	102.0	22.93	77483

Value label	Value	Absolute frequency	Relative frequency
missing	-9	57	0.07%
[Value >= 0]	1	77251	99.93%
	Total	77308	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
36.08	57	0	101.0	22.57	77251

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.0%
[Value >= 0]	1	32848	100.0%
	Total	32849	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
51.41	1	16.0	102.0	18.93	32848

Value label	Value	Absolute frequency	Relative frequency
missing	-9	24	0.07%
[Value >= 0]	1	35447	99.93%
	Total	35471	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
50.89	24	16.0	101.0	18.83	35447

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.0%
[Value >= 0]	1	27997	100.0%
	Total	27998	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
50.94	1	16.0	101.0	18.65	27997

Mean	Number Missing	Min	Max	Std Dev	N
50.66	0	16.0	101.0	18.72	29271

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.0%
[Value >= 0]	1	32007	100.0%
	Total	32008	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
50.25	1	16.0	100.0	18.85	32007

Mean	Number Missing	Min	Max	Std Dev	N
49.85	0	15.0	103.0	18.86	34319

Mean	Number Missing	Min	Max	Std Dev	N
49.34	0	16.0	103.0	18.81	36058

Mean	Number Missing	Min	Max	Std Dev	N
48.77	0	16.0	102.0	18.73	39294

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.01%
[Value >= 0]	1	42167	99.99%
	Total	42170	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
48.06	3	15.0	101.0	18.7	42167

Value label	Value	Absolute frequency	Relative frequency
missing	-9	27	0.06%
[Value >= 0]	1	45165	99.94%
	Total	45192	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
47.5	27	15.0	102.0	18.69	45165

Mean	Number Missing	Min	Max	Std Dev	N
47.73	0	16.0	101.0	18.75	44837

Mean	Number Missing	Min	Max	Std Dev	N
47.37	0	15.0	104.0	18.6	47074

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.0%
[Value >= 0]	1	49691	100.0%
	Total	49692	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
47.14	1	15.0	103.0	18.51	49691

Value label	Value	Absolute frequency	Relative frequency
missing	-9	2	0.0%
[Value >= 0]	1	54566	100.0%
	Total	54568	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
46.64	2	15.0	102.0	18.46	54566

Mean	Number Missing	Min	Max	Std Dev	N
45.64	0	15.0	101.0	18.19	50994

Mean	Number Missing	Min	Max	Std Dev	N
12.56	0	10.0	16.0	1.71	1435

Mean	Number Missing	Min	Max	Std Dev	N
12.54	0	9.0	16.0	1.71	1623

Mean	Number Missing	Min	Max	Std Dev	N
12.6	0	9.0	16.0	1.71	1766

Mean	Number Missing	Min	Max	Std Dev	N
12.55	0	10.0	16.0	1.67	1663

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.05%
[Value >= 0]	1	2099	99.95%
	Total	2100	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
12.53	1	10.0	16.0	1.69	2099

Value label	Value	Absolute frequency	Relative frequency
missing	-9	2	0.08%
[Value >= 0]	1	2504	99.92%
	Total	2506	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
12.57	2	10.0	16.0	1.71	2504

Mean	Number Missing	Min	Max	Std Dev	N
12.48	0	9.0	16.0	1.7	2821

Mean	Number Missing	Min	Max	Std Dev	N
12.53	0	10.0	16.0	1.73	3272

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.03%
[Value >= 0]	1	3629	99.97%
	Total	3630	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
12.51	1	10.0	16.0	1.69	3629

Mean	Number Missing	Min	Max	Std Dev	N
12.58	0	9.0	16.0	1.69	3461

Mean	Number Missing	Min	Max	Std Dev	N
12.57	0	9.0	16.0	1.68	3655

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.02%
[Value >= 0]	1	4044	99.98%
	Total	4045	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
12.57	1	9.0	16.0	1.69	4044

Value label	Value	Absolute frequency	Relative frequency
missing	-9	1	0.02%
[Value >= 0]	1	4426	99.98%
	Total	4427	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
12.54	1	9.0	16.0	1.7	4426

Mean	Number Missing	Min	Max	Std Dev	N
12.53	0	9.0	16.0	1.68	5018

Value label	Value	Absolute frequency	Relative frequency
missing	-9	3	0.06%
[Value >= 0]	1	4896	99.94%
	Total	4899	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
12.51	3	9.0	16.0	1.71	4896

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age_dv

Datafiles

Index term

Derived variable note:

Derived variable note:

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Saved variables

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Datafiles

Index term

Derived variable note:

Derived variable note:

Wave 15 (o_age_dv child)

Wave 14 (n_age_dv child)

Wave 13 (m_age_dv child)

Wave 12 (l_age_dv child)

Wave 11 (k_age_dv child)

Wave 10 (j_age_dv child)

Wave 9 (i_age_dv child)

Wave 8 (h_age_dv child)

Wave 7 (g_age_dv child)

Wave 6 (f_age_dv child)

Wave 5 (e_age_dv child)

Wave 4 (d_age_dv child)

Wave 3 (c_age_dv child)

Wave 2 (b_age_dv child)

Wave 1 (a_age_dv child)

Wave 15 (o_age_dv indall)

Wave 14 (n_age_dv indall)

Wave 13 (m_age_dv indall)

Wave 12 (l_age_dv indall)

Wave 11 (k_age_dv indall)

Wave 10 (j_age_dv indall)

Wave 9 (i_age_dv indall)

Wave 8 (h_age_dv indall)

Wave 7 (g_age_dv indall)

Wave 6 (f_age_dv indall)

Wave 5 (e_age_dv indall)

Wave 4 (d_age_dv indall)

Wave 3 (c_age_dv indall)

Wave 2 (b_age_dv indall)

Wave 1 (a_age_dv indall)

Wave 15 (o_age_dv indresp)

Wave 14 (n_age_dv indresp)

Wave 13 (m_age_dv indresp)

Wave 12 (l_age_dv indresp)

Wave 11 (k_age_dv indresp)

Wave 10 (j_age_dv indresp)

Wave 9 (i_age_dv indresp)

Wave 8 (h_age_dv indresp)

Wave 7 (g_age_dv indresp)

Wave 6 (f_age_dv indresp)

Wave 5 (e_age_dv indresp)

Wave 4 (d_age_dv indresp)

Wave 3 (c_age_dv indresp)

Wave 2 (b_age_dv indresp)

Wave 1 (a_age_dv indresp)

Wave 15 (o_age_dv youth)

Wave 14 (n_age_dv youth)

Wave 13 (m_age_dv youth)

Wave 12 (l_age_dv youth)

Wave 11 (k_age_dv youth)

Wave 10 (j_age_dv youth)

Wave 9 (i_age_dv youth)

Wave 8 (h_age_dv youth)

Wave 7 (g_age_dv youth)

Wave 6 (f_age_dv youth)

Wave 5 (e_age_dv youth)

Wave 4 (d_age_dv youth)

Wave 3 (c_age_dv youth)

Wave 2 (b_age_dv youth)

Wave 1 (a_age_dv youth)

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Saved variables

What else is Understanding Society doing?

Join our Strategic Oversight Board

Social life during COVID-19 in France, Germany, Italy and the UK

Insights 2026: Children and young people’s futures

The disappearance of the hump shape in illbeing by age

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