Table 1 Observational outcome-wide analysis analytic sample descriptive characteristics
Covariate | Categorical count of maltreatment types | |||||
|---|---|---|---|---|---|---|
0 (N = 119,893) | 1 (N = 25,030) | 2 (N = 7924) | 3 (N = 3150) | 4–5 (N = 1319) | Total (N = 157,316) | |
Sex | ||||||
Female | 65,921 (55.0%) | 14,989 (59.9%) | 5044 (63.7%) | 2135 (67.8%) | 984 (74.6%) | 89,073 (56.6%) |
Male | 53,972 (45.0%) | 10,041 (40.1%) | 2880 (36.3%) | 1015 (32.2%) | 335 (25.4%) | 68,243 (43.4%) |
Maternal smoking around birth | ||||||
N missing | 14,823 | 3290 | 1095 | 461 | 222 | 19,891 |
No | 76,842 (73.1%) | 14,608 (67.2%) | 4331 (63.4%) | 1584 (58.9%) | 572 (52.1%) | 97,937 (71.3%) |
Yes | 28,228 (26.9%) | 7132 (32.8%) | 2498 (36.6%) | 1105 (41.1%) | 525 (47.9%) | 39,488 (28.7%) |
Ethnicity | ||||||
N missing | 342 | 91 | 45 | 16 | 4 | 498 |
White | 116,982 (97.9%) | 23,864 (95.7%) | 7340 (93.2%) | 2889 (92.2%) | 1184 (90.0%) | 152,259 (97.1%) |
Mixed | 461 (0.4%) | 188 (0.8%) | 91 (1.2%) | 46 (1.5%) | 43 (3.3%) | 829 (0.5%) |
Asian | 1010 (0.8%) | 428 (1.7%) | 174 (2.2%) | 68 (2.2%) | 24 (1.8%) | 1704 (1.1%) |
Black | 573 (0.5%) | 264 (1.1%) | 176 (2.2%) | 94 (3.0%) | 42 (3.2%) | 1149 (0.7%) |
Other | 525 (0.4%) | 195 (0.8%) | 98 (1.2%) | 37 (1.2%) | 22 (1.7%) | 877 (0.6%) |
Country of birth | ||||||
N missing | 66 | 23 | 12 | 3 | 1 | 105 |
Not born in the UK | 7674 (6.4%) | 2291 (9.2%) | 877 (11.1%) | 361 (11.5%) | 148 (11.2%) | 11,351 (7.2%) |
Born in the UK | 112,153 (93.6%) | 22,716 (90.8%) | 7035 (88.9%) | 2786 (88.5%) | 1170 (88.8%) | 145,860 (92.8%) |
Breastfed as a baby | ||||||
N missing | 22,721 | 4941 | 1630 | 714 | 361 | 30,367 |
No | 24,931 (25.7%) | 5481 (27.3%) | 1965 (31.2%) | 861 (35.3%) | 355 (37.1%) | 33,593 (26.5%) |
Yes | 72,241 (74.3%) | 14,608 (72.7%) | 4329 (68.8%) | 1575 (64.7%) | 603 (62.9%) | 93,356 (73.5%) |
Age at enrollment | ||||||
Mean (SD) | 56.2 (7.7) | 55.5 (7.8) | 54.6 (7.8) | 54.1 (7.7) | 53.9 (7.8) | 55.9 (7.7) |
Range | 38–72 | 40–70 | 39–72 | 40–70 | 40–70 | 38–72 |
Age at Mental Health Questionnaire | ||||||
Mean (SD) | 63.3 (7.7) | 62.6 (7.8) | 61.6 (7.8) | 61.2 (7.7) | 60.9 (7.8) | 63.0 (7.7) |
Range | 45–80 | 45–79 | 46–79 | 46–78 | 46–78 | 45–80 |
Part of multiple birth | ||||||
N missing | 1479 | 415 | 179 | 91 | 60 | 2224 |
Single birth | 116,126 (98.1%) | 24,083 (97.8%) | 7560 (97.6%) | 2980 (97.4%) | 1221 (97.0%) | 151,970 (98.0%) |
Multiple birth | 2288 (1.9%) | 532 (2.2%) | 185 (2.4%) | 79 (2.6%) | 38 (3.0%) | 3122 (2.0%) |
Number of siblings | ||||||
N missing | 270 | 85 | 34 | 16 | 8 | 413 |
Mean (SD) | 1.9 (1.6) | 2.2 (1.8) | 2.5 (2.1) | 2.6 (2.1) | 2.9 (2.4) | 2.0 (1.7) |
Range | 0–25 | 0–22 | 0–32 | 0–15 | 0–15 | 0–32 |
Birthweight, kg | ||||||
N missing | 47,358 | 10,183 | 3184 | 1352 | 620 | 62,697 |
Mean (SD) | 3.35 (0.61) | 3.34 (0.64) | 3.32 (0.67) | 3.33 (0.67) | 3.25 (0.74) | 3.34 (0.62) |
Range | 0.48–9.00 | 0.45–6.35 | 0.91–10.00 | 0.68–6.46 | 0.88–6.35 | 0.45–10.00 |
Maternal severe depression | ||||||
N missing | 3175 | 1001 | 536 | 264 | 171 | 5147 |
No | 109,876 (94.1%) | 21,895 (91.1%) | 6533 (88.4%) | 2457 (85.1%) | 947 (82.5%) | 141,708 (93.1%) |
Yes | 6842 (5.9%) | 2134 (8.9%) | 855 (11.6%) | 429 (14.9%) | 201 (17.5%) | 10,461 (6.9%) |