Table 1

Characteristics of participants by cohort

Participant characteristicsCohort study birth year
1946195819701989–19902000–2002
Sample size
 Questionnaire respondents (n=15 291)12415205424719212677
 Included participants (n=14 891)11545119413118762609
Age (years)74625030–3119–20
Male (%)607 (51.88)2432 (47.51)1708 (41.40)633 (34.09)770 (29.51)
Non-white ethnicity (%)N/AN/AN/A361 (19.27)367 (14.17)
Childhood SEP I–III (%)633 (57.18)1897 (43.60)1727 (48.08)1227 (69.36)1755 (79.70)
Chronic Illness (%)842 (73.02)3099 (61.24)1955 (48.08)715 (39.20)830 (33.33)
Multimorbidity (%)390 (33.33)1408 (27.83)739 (18.18)194 (10.64)165 (6.63)
Shielding letter (%)112 (9.61)334 (6.57)196 (4.77)56 (3.00)60 (2.30)
Presence of children<16 years (%)0 (0.00)87 (2.13)1660 (41.10)462 (25.37)15 (0.60)
Psychological distress during lockdown (%)216 (18.77)452 (10.25)556 (16.07)655 (39.15)188 (8.29)
Key workers (%)9 (0.78)938 (18.32)1396 (33.79)583 (31.08)196 (7.51)
COVID-19 infection-self-reported or positive test (%)27 (2.31)296 (5.78)379 (9.18)197 (10.50)158 (6.06)
COVID-19 infection-positive test only (%)1 (0.09)19 (0.37)17 (0.41)12 (0.64)7 (0.27)
Outcomes
Cancelled appointments (%)376 (32.58)775 (15.17)494 (11.97)234 (12.47)303 (11.61)
Care hours during lockdown
 010734651382517242552
 1–461112664747
 5–9104136104
 10–1984220173
 20–345181642
 35+135435101
  • 1946 refers to NSHD; 1958 refers to NCDS; 1970 refers to BCS70; 1989–1990 refers to NS; 2000–2002 refers to MCS.

  • BCS70, 1970 British Cohort Study; MCS, Millennium Cohort Study; N/A, not available; NCDS, National Child Development Study; NS, Next Steps; NSHD, National Study of Health and Development; SEP, socioeconomic position.