Table 1.
Drop-out analysis comparing those not available for the BPD interview to those who completed the BPD interview
| Characteristic | BPD interview not available | BPD interview available | BPD interview not available versus available |
|---|---|---|---|
| N (%) | N (%) | OR (95 % CI) | |
| Gender | |||
| Male | 4282 (54) | 2938 (48.6) | [reference] |
| Female | 3644 (46) | 3112 (51.4) | 1.25 (1.16, 1.33) |
| Ethnicity | |||
| White | 5933 (93.8) | 5541 (96.2) | [reference] |
| Black and minority ethnic | 393 (6.2) | 216 (3.8) | 0.59 (0.50, 0.70) |
| Birth weight | |||
| > 2499 g | 7344 (93.9) | 5707 (95.4) | [reference] |
| < 2500 g | 474 (6.1) | 273 (4.6) | 0.74 (0.64, 0.86) |
| Marital status | |||
| Single | 2186 (30.5) | 1095 (18.5) | [reference] |
| Married | 4985 (69.5) | 4821 (81.5) | 1.93 (1.78, 2.10) |
| Home ownership | |||
| Mortgage | 4658 (65) | 4901 (83.6) | [reference] |
| Rent | 2510 (35) | 958 (16.4) | 0.36 (0.33, 0.40) |
| Education of mother | |||
| Below O level | 2466 (37.5) | 1262 (21.6) | [reference] |
| O level or above | 4113 (62.5) | 4577 (78.4) | 2.17 (2.01, 2.36) |
| Social class | |||
| Non-manual | 2714 (46) | 3152 (56.5) | [reference] |
| Manual | 3189 (54) | 2430 (43.5) | 0.66 (0.61, 0.71) |
| Family adversity (M, SD) | 4.35 (4.28) | 3.76 (3.87) | 0.96 (0.95, 0.96) |
Boldface indicates significant association at p < 0.05
OR Odds Ratio, CI Confidence Intervals, M mean, SD standard deviation