Characteristic Overall, N = 502,4091 0, N = 496,8351 1, N = 5,5741
age_at_recruit 58.0 (50.0-63.0) 58.0 (50.0-63.0) 58.0 (50.0-63.0)
    Unknown 3 3 0
age_at_assess 58.0 (50.0-63.0) 58.0 (50.0-63.0) 58.0 (50.0-63.0)
sex
    Female 273,325 (54%) 270,706 (54%) 2,619 (47%)
    Male 229,084 (46%) 226,129 (46%) 2,955 (53%)
deprivation -2.1 (-3.6-0.5) -2.1 (-3.6-0.5) -1.9 (-3.5-1.0)
    Unknown 626 624 2
ethnicity
    Prefer not to answer 1,661 (0.3%) 1,640 (0.3%) 21 (0.4%)
    Do not know 217 (<0.1%) 214 (<0.1%) 3 (<0.1%)
    White 569 (0.1%) 565 (0.1%) 4 (<0.1%)
    Mixed 49 (<0.1%) 49 (<0.1%) 0 (0%)
    Asian or Asian British 43 (<0.1%) 43 (<0.1%) 0 (0%)
    Black or Black British 27 (<0.1%) 27 (<0.1%) 0 (0%)
    Chinese 1,573 (0.3%) 1,568 (0.3%) 5 (<0.1%)
    Other ethnic group 4,557 (0.9%) 4,526 (0.9%) 31 (0.6%)
    British 442,514 (88%) 437,482 (88%) 5,032 (90%)
    Irish 13,201 (2.6%) 13,013 (2.6%) 188 (3.4%)
    Any other white background 16,326 (3.3%) 16,169 (3.3%) 157 (2.8%)
    White and Black Caribbean 619 (0.1%) 617 (0.1%) 2 (<0.1%)
    White and Black African 425 (<0.1%) 422 (<0.1%) 3 (<0.1%)
    White and Asian 830 (0.2%) 822 (0.2%) 8 (0.1%)
    Any other mixed background 1,031 (0.2%) 1,018 (0.2%) 13 (0.2%)
    Indian 5,951 (1.2%) 5,895 (1.2%) 56 (1.0%)
    Pakistani 1,835 (0.4%) 1,817 (0.4%) 18 (0.3%)
    Bangladeshi 236 (<0.1%) 233 (<0.1%) 3 (<0.1%)
    Any other Asian background 1,814 (0.4%) 1,802 (0.4%) 12 (0.2%)
    Caribbean 4,515 (0.9%) 4,504 (0.9%) 11 (0.2%)
    African 3,393 (0.7%) 3,389 (0.7%) 4 (<0.1%)
    Any other Black background 123 (<0.1%) 123 (<0.1%) 0 (0%)
    Unknown 900 897 3
hh_inc
    Prefer not to answer 49,830 (10%) 49,319 (10%) 511 (9.2%)
    Do not know 21,300 (4.3%) 21,071 (4.3%) 229 (4.1%)
    Less than 18,000 97,180 (20%) 95,958 (20%) 1,222 (22%)
    18,000 to 30,999 108,157 (22%) 106,989 (22%) 1,168 (21%)
    31,000 to 51,999 110,751 (22%) 109,498 (22%) 1,253 (23%)
    52,000 to 100,000 86,250 (17%) 85,344 (17%) 906 (16%)
    Greater than 100,000 22,927 (4.6%) 22,677 (4.6%) 250 (4.5%)
    Unknown 6,014 5,979 35
emplyment
    None of the above 2,800 (0.6%) 2,758 (0.6%) 42 (0.8%)
    Prefer not to answer 2,079 (0.4%) 2,064 (0.4%) 15 (0.3%)
    In paid employment or self-employed 287,080 (57%) 283,999 (57%) 3,081 (55%)
    Retired 166,968 (33%) 165,111 (33%) 1,857 (33%)
    Looking after home and/or family 13,855 (2.8%) 13,711 (2.8%) 144 (2.6%)
    Unable to work because of sickness or disability 16,823 (3.4%) 16,537 (3.3%) 286 (5.1%)
    Unemployed 8,263 (1.6%) 8,157 (1.6%) 106 (1.9%)
    Doing unpaid or voluntary work 2,326 (0.5%) 2,299 (0.5%) 27 (0.5%)
    Full or part-time student 1,343 (0.3%) 1,330 (0.3%) 13 (0.2%)
    Unknown 872 869 3
qualifications
    None of the above 85,259 (17%) 84,230 (17%) 1,029 (18%)
    Prefer not to answer 5,490 (1.1%) 5,445 (1.1%) 45 (0.8%)
    College or University degree 161,127 (32%) 159,390 (32%) 1,737 (31%)
    A levels/AS levels or equivalent 55,308 (11%) 54,702 (11%) 606 (11%)
    O levels/GCSEs or equivalent 105,175 (21%) 104,018 (21%) 1,157 (21%)
    CSEs or equivalent 26,885 (5.4%) 26,558 (5.4%) 327 (5.9%)
    NVQ or HND or HNC or equivalent 32,724 (6.6%) 32,330 (6.6%) 394 (7.1%)
    Other professional qualifications eg: nursing, teaching 25,799 (5.2%) 25,531 (5.2%) 268 (4.8%)
    Unknown 4,642 4,631 11
age_cat
    [37,47] 90,200 (18%) 89,175 (18%) 1,025 (18%)
    (47,53] 87,868 (17%) 86,936 (17%) 932 (17%)
    (53,58] 86,917 (17%) 85,910 (17%) 1,007 (18%)
    (58,61] 70,417 (14%) 69,608 (14%) 809 (15%)
    (61,65] 93,139 (19%) 92,132 (19%) 1,007 (18%)
    (65,73] 73,868 (15%) 73,074 (15%) 794 (14%)
age_eczema 24.0 (5.0-47.0) 24.0 (5.0-47.0) 26.0 (9.0-49.0)
    Unknown 489,864 484,579 5,285
eczema
    0 489,864 (98%) 484,579 (98%) 5,285 (95%)
    1 12,545 (2.5%) 12,256 (2.5%) 289 (5.2%)
age_psoriasis 29.0 (16.0-46.0) NA (NA-NA) 29.0 (16.0-46.0)
    Unknown 496,835 496,835 0
age_anxiety 44.0 (32.0-53.0) 44.0 (33.0-53.0) 41.0 (26.0-52.0)
    Unknown 495,686 490,221 5,465
anxiety
    0 495,686 (99%) 490,221 (99%) 5,465 (98%)
    1 6,723 (1.3%) 6,614 (1.3%) 109 (2.0%)
age_depression 43.0 (32.0-52.0) 43.0 (32.0-52.0) 42.0 (30.0-51.0)
    Unknown 474,210 469,061 5,149
depression
    0 474,210 (94%) 469,061 (94%) 5,149 (92%)
    1 28,199 (5.6%) 27,774 (5.6%) 425 (7.6%)
age_smi 34.0 (25.0-44.0) 34.0 (25.0-44.0) 35.0 (23.5-46.0)
    Unknown 500,223 494,691 5,532
smi
    0 500,223 (100%) 494,691 (100%) 5,532 (99%)
    1 2,186 (0.4%) 2,144 (0.4%) 42 (0.8%)
age_asthma 30.0 (10.0-45.0) 30.0 (10.0-45.0) 30.0 (10.0-46.0)
    Unknown 444,147 439,192 4,955
asthma
    0 444,147 (88%) 439,192 (88%) 4,955 (89%)
    1 58,262 (12%) 57,643 (12%) 619 (11%)
age_psoarth 45.0 (35.0-52.0) 46.0 (35.0-52.0) 43.0 (34.0-52.0)
    Unknown 501,471 496,306 5,165
psoarth
    0 501,471 (100%) 496,306 (100%) 5,165 (93%)
    1 938 (0.2%) 529 (0.1%) 409 (7.3%)
age_hayfever_allergicrhinitis 21.0 (12.0-38.0) 21.0 (12.0-38.0) 20.0 (12.0-35.2)
    Unknown 474,265 469,079 5,186
hayfever_allergicrhinitis
    0 474,265 (94%) 469,079 (94%) 5,186 (93%)
    1 28,144 (5.6%) 27,756 (5.6%) 388 (7.0%)
allergic_touchscreen 115,636 (23%) 114,166 (23%) 1,470 (26%)
bmi 26.7 (24.1-29.9) 26.7 (24.1-29.9) 27.5 (24.8-30.8)
    Unknown 10,136 10,014 122
mod_exercise
    -3 2,272 (0.5%) 2,249 (0.5%) 23 (0.4%)
    -1 24,114 (4.8%) 23,850 (4.8%) 264 (4.7%)
    0 61,140 (12%) 60,341 (12%) 799 (14%)
    1 38,275 (7.6%) 37,849 (7.6%) 426 (7.6%)
    2 69,765 (14%) 68,988 (14%) 777 (14%)
    3 71,483 (14%) 70,657 (14%) 826 (15%)
    4 47,177 (9.4%) 46,724 (9.4%) 453 (8.1%)
    5 71,406 (14%) 70,650 (14%) 756 (14%)
    6 26,429 (5.3%) 26,148 (5.3%) 281 (5.0%)
    7 89,468 (18%) 88,502 (18%) 966 (17%)
    Unknown 880 877 3
vig_exercise
    -3 4,114 (0.8%) 4,070 (0.8%) 44 (0.8%)
    -1 22,581 (4.5%) 22,319 (4.5%) 262 (4.7%)
    0 178,181 (36%) 175,987 (35%) 2,194 (39%)
    1 66,828 (13%) 66,128 (13%) 700 (13%)
    2 75,032 (15%) 74,272 (15%) 760 (14%)
    3 65,250 (13%) 64,564 (13%) 686 (12%)
    4 30,689 (6.1%) 30,374 (6.1%) 315 (5.7%)
    5 32,436 (6.5%) 32,086 (6.5%) 350 (6.3%)
    6 9,426 (1.9%) 9,335 (1.9%) 91 (1.6%)
    7 16,992 (3.4%) 16,823 (3.4%) 169 (3.0%)
    Unknown 880 877 3
met_score 217,838 (54%) 215,597 (54%) 2,241 (50%)
    Unknown 100,108 98,995 1,113
age_alcohol 38.0 (25.0-47.0) 38.0 (25.0-47.0) 40.5 (25.0-49.2)
    Unknown 501,601 496,051 5,550
alcohol
    0 501,601 (100%) 496,051 (100%) 5,550 (100%)
    1 808 (0.2%) 784 (0.2%) 24 (0.4%)
alcohol_touchscreen
    Prefer not to answer 603 (0.1%) 593 (0.1%) 10 (0.2%)
    Daily or almost daily 101,753 (20%) 100,563 (20%) 1,190 (21%)
    Three or four times a week 115,422 (23%) 114,149 (23%) 1,273 (23%)
    Once or twice a week 129,269 (26%) 127,898 (26%) 1,371 (25%)
    One to three times a month 55,840 (11%) 55,202 (11%) 638 (11%)
    Special occasions only 57,996 (12%) 57,358 (12%) 638 (11%)
    Never 40,627 (8.1%) 40,176 (8.1%) 451 (8.1%)
    Unknown 899 896 3
age_insomnia 52.0 (44.8-58.0) 52.0 (44.0-58.0) 53.0 (49.5-60.0)
    Unknown 500,301 494,762 5,539
insomnia
    0 500,301 (100%) 494,762 (100%) 5,539 (99%)
    1 2,108 (0.4%) 2,073 (0.4%) 35 (0.6%)
insomnia_touchscreen
    Prefer not to answer 612 (0.1%) 608 (0.1%) 4 (<0.1%)
    Never/rarely 120,753 (24%) 119,491 (24%) 1,262 (23%)
    Sometimes 238,787 (48%) 236,166 (48%) 2,621 (47%)
    Usually 141,364 (28%) 139,680 (28%) 1,684 (30%)
    Unknown 893 890 3
sleep_duration 7.0 (6.0-8.0) 7.0 (6.0-8.0) 7.0 (6.0-8.0)
    Unknown 889 886 3
smoking
    Prefer not to answer 2,057 (0.4%) 2,037 (0.4%) 20 (0.4%)
    Never 273,473 (55%) 271,087 (55%) 2,386 (43%)
    Previous 173,024 (35%) 170,729 (34%) 2,295 (41%)
    Current 52,962 (11%) 52,092 (11%) 870 (16%)
    Unknown 893 890 3
socsup_activity
    0 154,046 (31%) 152,212 (31%) 1,834 (33%)
    1 348,363 (69%) 344,623 (69%) 3,740 (67%)
socsup_visits
    Prefer not to answer 1,563 (0.3%) 1,553 (0.3%) 10 (0.2%)
    Do not know 1,716 (0.3%) 1,702 (0.3%) 14 (0.3%)
    Almost daily 57,756 (12%) 57,109 (12%) 647 (12%)
    2-4 times a week 152,010 (31%) 150,380 (31%) 1,630 (29%)
    About once a week 176,376 (35%) 174,418 (35%) 1,958 (35%)
    About once a month 66,477 (13%) 65,707 (13%) 770 (14%)
    Once every few months 33,147 (6.7%) 32,728 (6.6%) 419 (7.5%)
    Never or almost never 7,405 (1.5%) 7,302 (1.5%) 103 (1.9%)
    No friends/family outside household 1,305 (0.3%) 1,293 (0.3%) 12 (0.2%)
    Unknown 4,654 4,643 11
healthrating
    Prefer not to answer 365 (<0.1%) 365 (<0.1%) 0 (0%)
    Do not know 2,203 (0.4%) 2,176 (0.4%) 27 (0.5%)
    Excellent 81,845 (16%) 81,232 (16%) 613 (11%)
    Good 288,965 (58%) 285,980 (58%) 2,985 (54%)
    Fair 105,342 (21%) 103,838 (21%) 1,504 (27%)
    Poor 22,769 (4.5%) 22,327 (4.5%) 442 (7.9%)
    Unknown 920 917 3
year_entry
    2006 3,796 (0.8%) 3,787 (0.8%) 9 (0.2%)
    2007 49,808 (9.9%) 49,174 (9.9%) 634 (11%)
    2008 187,157 (37%) 185,063 (37%) 2,094 (38%)
    2009 173,407 (35%) 171,443 (35%) 1,964 (35%)
    2010 88,241 (18%) 87,368 (18%) 873 (16%)
age_hes_anxiety 52.5 (45.0-58.6) 52.5 (45.0-58.7) 46.7 (41.7-54.8)
    Unknown 499,929 494,383 5,546
hes_anxiety
    0 499,929 (100%) 494,383 (100%) 5,546 (99%)
    1 2,480 (0.5%) 2,452 (0.5%) 28 (0.5%)
age_hes_depression 51.3 (44.1-57.8) 51.3 (44.1-57.8) 51.9 (42.9-57.4)
    Unknown 496,794 491,307 5,487
hes_depression
    0 496,794 (99%) 491,307 (99%) 5,487 (98%)
    1 5,615 (1.1%) 5,528 (1.1%) 87 (1.6%)
age_hes_eczema 53.8 (45.5-59.8) 53.8 (45.5-59.8) 54.7 (48.6-59.3)
    Unknown 501,704 496,154 5,550
hes_eczema
    0 501,704 (100%) 496,154 (100%) 5,550 (100%)
    1 705 (0.1%) 681 (0.1%) 24 (0.4%)
age_hes_psoriasis 54.3 (47.0-59.4) 55.0 (48.0-59.8) 53.5 (46.1-58.5)
    Unknown 501,196 496,204 4,992
hes_psoriasis
    0 501,196 (100%) 496,204 (100%) 4,992 (90%)
    1 1,213 (0.2%) 631 (0.1%) 582 (10%)
age_hes_smi 48.3 (41.4-55.0) 48.3 (41.4-55.1) 45.8 (39.4-53.3)
    Unknown 501,043 495,495 5,548
hes_smi
    0 501,043 (100%) 495,495 (100%) 5,548 (100%)
    1 1,366 (0.3%) 1,340 (0.3%) 26 (0.5%)
ever_anxious_worried
    Prefer not to answer 786 (0.5%) 773 (0.5%) 13 (0.8%)
    Do not know 9,672 (6.1%) 9,557 (6.1%) 115 (6.7%)
    No 107,860 (69%) 106,709 (69%) 1,151 (67%)
    Yes 38,995 (25%) 38,549 (25%) 446 (26%)
    Unknown 345,096 341,247 3,849
ever_depressed_sad
    Prefer not to answer 406 (0.3%) 402 (0.3%) 4 (0.2%)
    No 70,984 (45%) 70,306 (45%) 678 (39%)
    Yes 85,923 (55%) 84,880 (55%) 1,043 (60%)
    Unknown 345,096 341,247 3,849
ever_soughthelp
    Prefer not to answer 228 (0.1%) 225 (0.1%) 3 (0.2%)
    Do not know 309 (0.2%) 306 (0.2%) 3 (0.2%)
    No 95,329 (61%) 94,341 (61%) 988 (57%)
    Yes 61,447 (39%) 60,716 (39%) 731 (42%)
    Unknown 345,096 341,247 3,849
happy
    Prefer not to answer 129 (<0.1%) 127 (<0.1%) 2 (0.1%)
    Do not know 777 (0.5%) 766 (0.5%) 11 (0.6%)
    Extremely happy 15,652 (9.9%) 15,485 (10.0%) 167 (9.7%)
    Very happy 69,435 (44%) 68,714 (44%) 721 (42%)
    Moderately happy 62,597 (40%) 61,903 (40%) 694 (40%)
    Moderately unhappy 6,909 (4.4%) 6,811 (4.4%) 98 (5.7%)
    Very unhappy 1,382 (0.9%) 1,354 (0.9%) 28 (1.6%)
    Extremely unhappy 432 (0.3%) 428 (0.3%) 4 (0.2%)
    Unknown 345,096 341,247 3,849
1 Median (IQR) or Frequency (%)