Table 1.
Frequency (and percentage) of adult socio-demographic characteristics, cigarette smoking and alcohol misuse
| Male (n = 8398) | Female (n = 10 555) | ||
|---|---|---|---|
| N (%) | N (%) | ||
| Mean age (SD) | 59.5 (9.2) | 58.4 (9.2) | |
| Education levela | |||
| Degree | 1308 (15.6) | 1233 (11.7) | |
| A-level | 3881 (46.2) | 3810 (36.1) | |
| O-level | 736 (8.8) | 1315 (12.5) | |
| <O level | 2473 (29.5) | 4197 (39.8) | |
| Social class | |||
| I | 687 (8.2) | 689 (6.5) | |
| II | 3234 (38.5) | 3766 (35.7) | |
| III non-manual | 1075 (12.8) | 2175 (20.6) | |
| III manual | 2060 (24.5) | 2150 (20.4) | |
| IV | 1112 (13.2) | 1356 (12.9) | |
| V | 230 (2.7) | 419 (4.0) | |
| Childhood social risk factors | |||
| Parental unemployment | 757 (9.0) | 882 (8.4) | |
| Parental substance misuse | 507 (6.0) | 662 (6.3) | |
| Physical abuse | 260 (3.1) | 553 (5.2) | |
| Maternal separation | 1141 (13.6) | 1353 (12.8) | |
| Parental divorce | 333 (4.0) | 449 (4.3) | |
| Sent away from home | 59 (0.7) | 39 (0.4) | |
| Number of childhood social risk factors | |||
| 0 | 6083 (72.4) | 7553 (71.6) | |
| 1 | 1743 (20.8) | 2283 (21.6) | |
| 2 | 442 (5.3) | 538 (5.1) | |
| ≥3 | 130 (1.6) | 181 (1.7) | |
| Cigarette smoking status | |||
| Yes | 938 (11.2) | 1111 (10.5) | |
| No | 7460 (88.8) | 9444 (89.5) | |
| Alcohol misuse | |||
| Yes | 1230 (14.7) | 815 (7.7) | |
| No | 7168 (85.4) | 9740 (92.3) | |
SD, standard deviation.
a
A-level defined as completion of schooling up to age of 17 years;
O-level defined as completion of schooling up to age of 15 year