Main Survey

birthm

Save 

dob month

Datafiles

indall, xwavedat, xwaveid, indresp, child, xwaveid_bh

Derived Variable Note

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

See DOBM_DV DOBY_DV

Index term

Socio-demographic Characteristics

Related question

hhgrid_w9.birthm

DOB month

Text:
(What is [your]/[NAME]'s/[ff_forname]'s date of birth?)

Universe:
if BirthChk = 2 | NewPer = 1 | NewPer = 3 (DOB check is incorrect or individual is a new household member or is a rejoiner not found in the data)

Wave specific data

Statistics

MeanNumber MissingMinMaxStd DevN
6.41281.012.03.4436027

Statistics

MeanNumber MissingMinMaxStd DevN
6.41391.012.03.4439254

Statistics

MeanNumber MissingMinMaxStd DevN
6.42621.012.03.4342106

Statistics

MeanNumber MissingMinMaxStd DevN
6.43721.012.03.4444816

Statistics

MeanNumber MissingMinMaxStd DevN
6.39341.012.03.4344799

Statistics

MeanNumber MissingMinMaxStd DevN
6.4481.012.03.4347023

Statistics

MeanNumber MissingMinMaxStd DevN
6.4501.012.03.4349642

Statistics

MeanNumber MissingMinMaxStd DevN
6.39981.012.03.4354471

Statistics

MeanNumber MissingMinMaxStd DevN
6.394181.012.03.4450576

Statistics

MeanNumber MissingMinMaxStd DevN
6.4221.012.03.4314417

Statistics

MeanNumber MissingMinMaxStd DevN
6.4411.012.03.4214872

Statistics

MeanNumber MissingMinMaxStd DevN
6.4631.012.03.4315389

Statistics

MeanNumber MissingMinMaxStd DevN
6.4631.012.03.4315614

Statistics

MeanNumber MissingMinMaxStd DevN
6.4611.012.03.4315790

Statistics

MeanNumber MissingMinMaxStd DevN
6.4531.012.03.4216235

Statistics

MeanNumber MissingMinMaxStd DevN
6.4131.012.03.4216594

Statistics

MeanNumber MissingMinMaxStd DevN
6.4331.012.03.4118864

Statistics

MeanNumber MissingMinMaxStd DevN
6.4511.012.03.4215602

Statistics

MeanNumber MissingMinMaxStd DevN
6.4441.012.03.4215619

Statistics

MeanNumber MissingMinMaxStd DevN
6.4411.012.03.4110905

Statistics

MeanNumber MissingMinMaxStd DevN
6.4531.012.03.411190

Statistics

MeanNumber MissingMinMaxStd DevN
6.4531.012.03.419435

Statistics

MeanNumber MissingMinMaxStd DevN
6.4861.012.03.419243

Statistics

MeanNumber MissingMinMaxStd DevN
6.4561.012.03.429475

Statistics

MeanNumber MissingMinMaxStd DevN
6.4551.012.03.429595

Statistics

MeanNumber MissingMinMaxStd DevN
6.4551.012.03.419840

Statistics

MeanNumber MissingMinMaxStd DevN
6.441241.012.03.4352567

Statistics

MeanNumber MissingMinMaxStd DevN
6.451861.012.03.4456419

Statistics

MeanNumber MissingMinMaxStd DevN
6.453121.012.03.4459626

Statistics

MeanNumber MissingMinMaxStd DevN
6.4411331.012.03.4563573

Statistics

MeanNumber MissingMinMaxStd DevN
6.432081.012.03.4361300

Statistics

MeanNumber MissingMinMaxStd DevN
6.432411.012.03.4465385

Statistics

MeanNumber MissingMinMaxStd DevN
6.432571.012.03.4470414

Statistics

MeanNumber MissingMinMaxStd DevN
6.425231.012.03.4476973

Statistics

MeanNumber MissingMinMaxStd DevN
6.4215731.012.03.4475736

Statistics

MeanNumber MissingMinMaxStd DevN
6.431311.012.03.4220046

Statistics

MeanNumber MissingMinMaxStd DevN
6.441141.012.03.4220601

Statistics

MeanNumber MissingMinMaxStd DevN
6.451321.012.03.4221257

Statistics

MeanNumber MissingMinMaxStd DevN
6.45841.012.03.4221646

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-220.01%
don't know-1920.42%
January118688.44%
February217087.72%
March319528.82%
April418858.52%
May519028.6%
June618568.39%
July718208.23%
August819108.63%
September918598.4%
October1018038.15%
November1117047.7%
December1217667.98%
Total22127100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.45941.012.03.4222033

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-210.0%
don't know-1870.39%
January119068.44%
February217487.74%
March320008.86%
April419488.63%
May519348.57%
June619018.42%
July718538.21%
August819428.6%
September918908.37%
October1018248.08%
November1117287.65%
December1218128.03%
Total22574100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.44881.012.03.4222486

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-210.0%
don't know-11170.5%
January119968.52%
February218017.69%
March320968.94%
April420318.67%
May520268.65%
June619698.4%
July719268.22%
August820008.53%
September919748.42%
October1018788.01%
November1117467.45%
December1218748.0%
Total23435100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.421181.012.03.4223317

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-230.01%
don't know-11120.42%
January122468.45%
February220617.75%
March324009.03%
April423158.71%
May522808.58%
June622138.32%
July722118.32%
August822868.6%
September922188.34%
October1021237.99%
November1119887.48%
December1221308.01%
Total26586100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.421151.012.03.4226471

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-250.02%
don't know-11100.51%
January118008.33%
February216827.79%
March319609.07%
April418378.5%
May518188.42%
June617908.29%
July718188.42%
August818468.55%
September918428.53%
October1017658.17%
November1115847.33%
December1217458.08%
Total21602100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.441151.012.03.4221487

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-250.02%
don't know-11290.6%
January118038.36%
February216827.8%
March319388.99%
April418548.6%
May518308.49%
June617648.18%
July718128.4%
August818338.5%
September918108.39%
October1017528.12%
November1116007.42%
December1217548.13%
Total21566100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.441341.012.03.4221432

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-230.02%
don't know-1520.35%
January111998.08%
February211567.79%
March313889.36%
April412758.59%
May512798.62%
June612058.12%
July712628.51%
August812648.52%
September912368.33%
October1011998.08%
November1111077.46%
December1212108.16%
Total14835100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.44551.012.03.4214780

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-210.01%
don't know-1490.33%
January112098.04%
February211777.82%
March314089.36%
April412968.62%
May512718.45%
June612438.26%
July712678.42%
August812798.5%
September912668.42%
October1012418.25%
November1111277.49%
December1212088.03%
Total15042100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.44501.012.03.4114992

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-210.01%
don't know-1520.41%
January110288.08%
February210027.88%
March312089.5%
April410648.36%
May510838.51%
June610618.34%
July710668.38%
August810568.3%
September910778.47%
October1010478.23%
November119697.62%
December1210067.91%
Total12720100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.43531.012.03.4212667

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-2100.08%
don't know-1510.41%
January110007.97%
February29917.9%
March311919.49%
April410408.29%
May510708.53%
June610378.26%
July710398.28%
August810408.29%
September910768.57%
October1010488.35%
November119567.62%
December1210007.97%
Total12549100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.45611.012.03.4212488

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-260.05%
don't know-1390.3%
January110488.16%
February210147.89%
March312189.48%
April410838.43%
May510888.47%
June610518.18%
July710668.3%
August810578.23%
September911088.62%
October1010568.22%
November119927.72%
December1210257.98%
Total12851100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.44451.012.03.4212806

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-260.05%
don't know-1560.43%
January110518.02%
February210267.83%
March312269.36%
April411368.67%
May510978.37%
June610658.13%
July710788.23%
August810898.31%
September911488.76%
October1010658.13%
November1110177.76%
December1210447.97%
Total13104100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.45621.012.03.4213042

Frequencies

Value labelValueAbsolute frequencyRelative frequency
refusal-2220.17%
don't know-1260.2%
January110568.03%
February210137.7%
March312329.37%
April411448.7%
May511168.49%
June610728.15%
July711188.5%
August810898.28%
September911368.64%
October1010698.13%
November1110237.78%
December1210357.87%
Total13151100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.45481.012.03.4113103

Frequencies

Value labelValueAbsolute frequencyRelative frequency
missing-940.03%
refusal-2120.09%
don't know-1480.35%
January111268.14%
February210627.67%
March312919.33%
April411948.63%
May511718.46%
June611288.15%
July711668.42%
August811508.31%
September912138.76%
October1011088.01%
November1110897.87%
December1210787.79%
Total13840100.0%

Statistics

MeanNumber MissingMinMaxStd DevN
6.45641.012.03.4113776

Statistics

MeanNumber MissingMinMaxStd DevN
6.5881.012.03.4510298

Statistics

MeanNumber MissingMinMaxStd DevN
6.59391.012.03.4511510

Statistics

MeanNumber MissingMinMaxStd DevN
6.6581.012.03.4712509

Statistics

MeanNumber MissingMinMaxStd DevN
6.591851.012.03.4712828

Statistics

MeanNumber MissingMinMaxStd DevN
6.56101.012.03.4612886

Statistics

MeanNumber MissingMinMaxStd DevN
6.56251.012.03.4514122

Statistics

MeanNumber MissingMinMaxStd DevN
6.55251.012.03.4615498

Statistics

MeanNumber MissingMinMaxStd DevN
6.56741.012.03.4617064

Statistics

MeanNumber MissingMinMaxStd DevN
6.553511.012.03.4517476

Origin

Uses W_BIRTHM on data file W_INDALL
Uses BW_BIRTHM on data file BW_INDALL

Statistics

MeanNumber MissingMinMaxStd DevN
6.4616601.012.03.44145427

Statistics

MeanNumber MissingMinMaxStd DevN
6.449791.012.03.4242293

Statistics

MeanNumber MissingMinMaxStd DevN
6.467761.012.03.44123941