| Men | Women | |||
| No of cases/no of subjects | Hazard ratios (95% CI) | No of cases/no of subjects | Hazard ratios (95% CI) | |
| Social class at birth (1915–1929)* | ||||
| Non-manual | 273/1520 | 1.00 | 96/1398 | 1.00 |
| Self-employed | 170/1103 | 0.84 (0.69 to 1.02) | 62/949 | 0.98 (0.71 to 1.34) |
| Manual | 565/3031 | 1.05 (0.91 to 1.22) | 222/2864 | 1.15 (0.91 to 1.46) |
| Other | 61/322 | 1.12 (0.85 to 1.48) | 30/329 | 1.50 (1.00 to 2.27) |
| Social class in adulthood (1960)† | ||||
| Non-manual | 378/2252 | 1.00 | 223/2940 | 1.00 |
| Self-employed | 162/870 | 1.12 (0.93 to 1.35) | 49/761 | 0.81 (0.60 to 1.11) |
| Manual | 497/2580 | 1.28 (1.12 to 1.47) | 121/1540 | 1.13 (0.90 to 1.41) |
| Other | 43/192 | 2.14 (1.56 to 2.94) | 18/192 | 1.48 (0.91 to 2.39) |
| Personal earned gross income (1970) | ||||
| Zero | 60/263 | 2.24 (1.68 to 2.99) | 91/1408 | 0.78 (0.58 to 1.06) |
| 1st Quartile | 306/1403 | 1.80 (1.51 to 2.15) | 87/1013 | 1.08 (0.80 to 1.46) |
| 2nd Quartile | 262/1403 | 1.36 (1.13 to 1.64) | 67/1012 | 0.83 (0.60 to 1.14) |
| 3rd Quartile | 242/1403 | 1.22 (1.01 to 1.46) | 86/1012 | 1.09 (0.80 to 1.47) |
| 4th Quartile | 205/1402 | 1.00 | 83/1012 | 1.00 |
| Household total gross income (1970) | ||||
| 1st Quartile | 275/1334 | 1.48 (1.24 to 1.76) | 116/1253 | 1.59 (1.19 to 2.12) |
| 2nd Quartile | 239/1334 | 1.23 (1.02 to 1.48) | 84/1250 | 1.09 (0.80 to 1.48) |
| 3rd Quartile | 228/1334 | 1.11 (0.92 to 1.33) | 90/1252 | 1.24 (0.91 to 1.68) |
| 4th Quartile | 217/1334 | 1.00 | 76/1251 | 1.00 |
*Defined by occupational status of the head of the household at the time of the child’s birth.
†Based on occupation recorded in the 1960 census.