Table 1.
Demographic characteristics
| Nested subset | Main cohort | ||||
|---|---|---|---|---|---|
| Characteristics | n | % | n | % | |
| All | 39 | 100.0 | 4070 | 100.0 | |
| Age | <20 | 2 | 5.1 | 302 | 7.4 |
| 20-24 | 4 | 10.3 | 1088 | 26.7 | |
| 25-29 | 13 | 33.3 | 1317 | 32.4 | |
| 30-34 | 15 | 38.5 | 839 | 20.6 | |
| 35-39 | 4 | 10.3 | 450 | 11.1 | |
| ≥40 | 1 | 2.6 | 73 | 1.8 | |
| Missing data | 1 | 0.02 | |||
| Marital Status | Married | 31 | 79.5 | 2864 | 70.4 |
| Single | 8 | 20.5 | 1198 | 29.4 | |
| Missing data | 8 | 0.2 | |||
| Highest Educational Qualification | None | 4 | 10.3 | 698 | 17.1 |
| O level/GCSE or A level | 13 | 33.3 | 1389 | 34.1 | |
| Degree | 14 | 35.9 | 827 | 20.3 | |
| Other (e.g. NVQ) | 8 | 20.5 | 1094 | 26.9 | |
| Don't know | 53 | 1.3 | |||
| Missing data | 9 | 0.2 | |||
| Employment status | Employed | 20 | 51.3 | 1624 | 39.9 |
| Unemployed | 18 | 46.2 | 2258 | 55.5 | |
| Maternity/Sick leave | 1 | 2.6 | 184 | 4.5 | |
| Missing data | 4 | 0.1 | |||
| Parity | 0 | 14 | 35.9 | 1587 | 39.0 |
| 1 | 15 | 38.5 | 1198 | 29.4 | |
| 2 | 7 | 17.9 | 657 | 16.1 | |
| 3+ | 3 | 7.7 | 528 | 13.0 | |
| Missing data | 100 | 2.5 | |||
| Household Income | <£20,000 | 15 | 38.5 | 1876 | 46.1 |
| £20,000-40,000 | 14 | 35.9 | 953 | 23.4 | |
| >£40,000 | 7 | 17.9 | 332 | 8.2 | |
| Don't know | 3 | 7.7 | 846 | 20.8 | |
| Not stated/missing | 63 | 1.4 | |||
| Ethnicity | White British | 19 | 48.7 | 1573 | 38.6 |
| White Other | 1 | 2.6 | 96 | 2.4 | |
| Pakistani | 15 | 38.5 | 1873 | 46.0 | |
| Indian | 1 | 2.6 | 159 | 3.9 | |
| Bangladeshi | 0 | 0.0 | 94 | 2.3 | |
| Any other Asian origin | 0 | 0.0 | 40 | 1.0 | |
| Black or Black British | 1 | 2.6 | 105 | 2.6 | |
| Mixed | 0 | 0.0 | 67 | 1.6 | |
| All Other | 2 | 5.1 | 59 | 1.4 | |
| Not stated/missing | 4 | 0.1 | |||
| Smoking | Current smoker | 4 | 10.3 | 562 | 13.8 |
| Past smoker | 8 | 20.5 | 612 | 15.0 | |
| Never smoker | 27 | 69.2 | 2896 | 71.2 | |