Main survey variable: doby_dv DOB: Year, derived

DOB: Year, derived

Date of birth, year. Taken from the sample member’s latest enumeration in the study. Not defined for BHPS wave 1-18 respondents who were never enumerated in the UKHLS. Recorded to missing for sample members whose interview outcome is inconsistent with the suggested age +/- one year.

See BIRTHM BIRTHY

Datafiles

Index terms

Derived variable note:

Date of birth, year. Taken from the sample member's latest enumeration in the study. Not defined for BHPS wave 1-18 respondents who were never enumerated in the UKHLS. Recorded to missing for sample members whose interview outcome is inconsistent with the suggested age +/- one year.

See BIRTHM BIRTHY

Derived variable note:

Uses W_DOBY_DV on data file W_INDALL
W_DOBY_DV uses W_PBRITH{DMY}, SCDOB{DMY} in W_INDRESP, YPDOB{DMY} in W_YOUTH, NEBIRTH{DMY}, CDOB{DMY} and BIRTH{DMY} in W_INDALL/

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
2014.65	21	2007.0	2024.0	4.62	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
2013.83	39	2006.0	2024.0	4.62	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
2012.55	11	2005.0	2023.0	4.57	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
2011.63	16	2004.0	2021.0	4.57	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
2010.8	8	2003.0	2021.0	4.52	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
2009.85	9	2001.0	2020.0	4.51	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
2009.0	4	2001.0	2019.0	4.47	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
2008.07	26	2000.0	2018.0	4.5	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
2007.25	29	1999.0	2017.0	4.52	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
2006.55	56	1938.0	2016.0	4.79	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
2005.29	2	1997.0	2015.0	4.59	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
2004.34	1	1996.0	2014.0	4.63	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
2003.38	8	1994.0	2013.0	4.66	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
2002.39	10	1993.0	2012.0	4.66	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
2001.65	8	1992.0	2011.0	4.72	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
1979.98	39	1915.0	2024.0	23.47	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
1979.97	158	1915.0	2024.0	23.39	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
1978.75	26	1915.0	2023.0	23.34	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
1978.09	20	1900.0	2021.0	23.35	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
1977.66	14	1915.0	2021.0	23.43	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
1977.3	20	1915.0	2020.0	23.43	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
1976.89	18	1913.0	2019.0	23.37	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
1976.51	52	1913.0	2018.0	23.33	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
1976.18	65	1913.0	2017.0	23.26	59876

Value label	Value	Absolute frequency	Relative frequency
missing	-9	179	0.28%
[Value >= 0]	1	64533	99.72%
	Total	64712	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
1975.76	179	1912.0	2016.0	23.15	64533

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
1974.09	2	1912.0	2015.0	23.3	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
1973.68	1	1908.0	2014.0	23.18	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
1973.08	9	1908.0	2013.0	23.11	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
1972.52	12	1908.0	2012.0	22.95	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
1972.95	57	1908.0	2011.0	22.58	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
1971.54	1	1920.0	2008.0	18.95	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
1971.11	24	1920.0	2007.0	18.85	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
1969.98	1	1919.0	2006.0	18.67	27997

Mean	Number Missing	Min	Max	Std Dev	N
1969.25	0	1918.0	2006.0	18.73	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
1968.71	1	1918.0	2004.0	18.88	32007

Mean	Number Missing	Min	Max	Std Dev	N
1968.13	0	1915.0	2004.0	18.89	34319

Mean	Number Missing	Min	Max	Std Dev	N
1967.66	0	1913.0	2003.0	18.84	36058

Mean	Number Missing	Min	Max	Std Dev	N
1967.23	0	1913.0	2002.0	18.78	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
1966.95	3	1913.0	2001.0	18.74	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
1966.53	27	1912.0	2000.0	18.75	45165

Mean	Number Missing	Min	Max	Std Dev	N
1965.24	0	1912.0	1999.0	18.77	44837

Mean	Number Missing	Min	Max	Std Dev	N
1964.6	0	1908.0	1998.0	18.63	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
1963.81	1	1908.0	1997.0	18.54	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
1963.31	2	1908.0	1995.0	18.49	54566

Mean	Number Missing	Min	Max	Std Dev	N
1963.39	0	1908.0	1994.0	18.21	50994

Value label	Value	Absolute frequency	Relative frequency
missing	-9	486	0.29%
[Value >= 0]	1	167795	99.71%
	Total	168281	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
1659.26	486	-20.0	2024.0	731.86	167795

Value label	Value	Absolute frequency	Relative frequency
missing	-9	486	0.29%
[Value >= 0]	1	167891	99.71%
	Total	168377	100.0%

Mean	Number Missing	Min	Max	Std Dev	N
1658.57	486	-20.0	2024.0	732.51	167891

Mean	Number Missing	Min	Max	Std Dev	N
2010.56	0	2007.0	2014.0	1.82	1435

Mean	Number Missing	Min	Max	Std Dev	N
2009.43	0	2006.0	2013.0	1.86	1623

Mean	Number Missing	Min	Max	Std Dev	N
2008.32	0	2005.0	2012.0	1.86	1766

Mean	Number Missing	Min	Max	Std Dev	N
2007.36	0	2004.0	2011.0	1.8	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
2006.38	1	2003.0	2010.0	1.8	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
2005.42	2	2001.0	2009.0	1.82	2504

Mean	Number Missing	Min	Max	Std Dev	N
2004.51	0	2001.0	2009.0	1.83	2821

Mean	Number Missing	Min	Max	Std Dev	N
2003.49	0	2000.0	2008.0	1.87	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
2002.52	1	1999.0	2007.0	1.83	3629

Mean	Number Missing	Min	Max	Std Dev	N
2001.32	0	1998.0	2006.0	1.86	3461

Mean	Number Missing	Min	Max	Std Dev	N
2000.37	0	1997.0	2004.0	1.82	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
1999.39	1	1996.0	2004.0	1.84	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
1998.4	1	1994.0	2002.0	1.83	4426

Mean	Number Missing	Min	Max	Std Dev	N
1997.41	0	1994.0	2001.0	1.81	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
1996.49	3	1993.0	2001.0	1.84	4896

Code creator
0

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

doby_dv

Datafiles

Index terms

Derived variable note:

Derived variable note:

Code creator
0

Saved variables

What else is Understanding Society doing?

Understanding Society Wave 15

Understanding Society Wave 15 – what can data users expect?

Understanding Society used for Gender Equality Index

Understanding Society Biosocial Conference 2026: combining biological and social data

Email newsletter

Datafiles

Index terms

Derived variable note:

Derived variable note:

Wave 15 (o_doby_dv child)

Wave 14 (n_doby_dv child)

Wave 13 (m_doby_dv child)

Wave 12 (l_doby_dv child)

Wave 11 (k_doby_dv child)

Wave 10 (j_doby_dv child)

Wave 9 (i_doby_dv child)

Wave 8 (h_doby_dv child)

Wave 7 (g_doby_dv child)

Wave 6 (f_doby_dv child)

Wave 5 (e_doby_dv child)

Wave 4 (d_doby_dv child)

Wave 3 (c_doby_dv child)

Wave 2 (b_doby_dv child)

Wave 1 (a_doby_dv child)

Wave 15 (o_doby_dv indall)

Wave 14 (n_doby_dv indall)

Wave 13 (m_doby_dv indall)

Wave 12 (l_doby_dv indall)

Wave 11 (k_doby_dv indall)

Wave 10 (j_doby_dv indall)

Wave 9 (i_doby_dv indall)

Wave 8 (h_doby_dv indall)

Wave 7 (g_doby_dv indall)

Wave 6 (f_doby_dv indall)

Wave 5 (e_doby_dv indall)

Wave 4 (d_doby_dv indall)

Wave 3 (c_doby_dv indall)

Wave 2 (b_doby_dv indall)

Wave 1 (a_doby_dv indall)

Wave 15 (o_doby_dv indresp)

Wave 14 (n_doby_dv indresp)

Wave 13 (m_doby_dv indresp)

Wave 12 (l_doby_dv indresp)

Wave 11 (k_doby_dv indresp)

Wave 10 (j_doby_dv indresp)

Wave 9 (i_doby_dv indresp)

Wave 8 (h_doby_dv indresp)

Wave 7 (g_doby_dv indresp)

Wave 6 (f_doby_dv indresp)

Wave 5 (e_doby_dv indresp)

Wave 4 (d_doby_dv indresp)

Wave 3 (c_doby_dv indresp)

Wave 2 (b_doby_dv indresp)

Wave 1 (a_doby_dv indresp)

Wave xwave (doby_dv xhhrel)

Wave xwave (doby_dv xwavedat)

Wave 15 (o_doby_dv youth)

Wave 14 (n_doby_dv youth)

Wave 13 (m_doby_dv youth)

Wave 12 (l_doby_dv youth)

Wave 11 (k_doby_dv youth)

Wave 10 (j_doby_dv youth)

Wave 9 (i_doby_dv youth)

Wave 8 (h_doby_dv youth)

Wave 7 (g_doby_dv youth)

Wave 6 (f_doby_dv youth)

Wave 5 (e_doby_dv youth)

Wave 4 (d_doby_dv youth)

Wave 3 (c_doby_dv youth)

Wave 2 (b_doby_dv youth)

Wave 1 (a_doby_dv youth)

Code creator 0

Saved variables

What else is Understanding Society doing?

Understanding Society Wave 15

Understanding Society Wave 15 – what can data users expect?

Understanding Society used for Gender Equality Index

Understanding Society Biosocial Conference 2026: combining biological and social data

Email newsletter

Code creator
0