Table 2 Sociodemographic and behavioural characteristics by sample.
| Denominator* | Sample | p Value‡ | |||
|---|---|---|---|---|---|
| Internet (2065) | Natsal (117 135) | ||||
| n | % | n† | % (95% CI) | ||
| Mean (SD) age (years) | 29.4 | 7.6 | 31.9 | 6.2 | <0.001 |
| Employment status§ | 0.001 | ||||
| Student | 351 | 17.0 | 6 | 5.2 (2.5 to 10.6) | |
| Not working | 141 | 6.8 | 16 | 13.7 (8.4 to 21.5) | |
| Working | 1573 | 76.2 | 95 | 81.1 (73.1 to 87.2) | |
| Ethnic group (white) | 1955 | 95.6 | 108 | 92.3 (86.7 to 95.7) | 0.066 |
| Holds degree or equivalent | 898 | 43.6 | 51 | 43.6 (34.1 to 53.7) | 0.994 |
| Social class (non‐manual) | 1298 | 82.3 | 87 | 80.0 (69.9 to 87.3) | 0.593 |
| Region of residence | 0.291 | ||||
| England—North | 442 | 21.9 | 29 | 25.0 (16.6 to 35.8) | |
| England—Midlands | 262 | 13.0 | 15 | 13.1 (7.3 to 22.2) | |
| England—South | 1034 | 51.2 | 60 | 51.6 (43.3 to 59.9) | |
| Wales | 69 | 3.4 | 7 | 5.8 (2.4 to 13.3) | |
| Scotland | 211 | 10.5 | 5 | 4.5 (1.9 to 10.1) | |
| Lives in an urban area | 1880 | 91.9 | 109 | 93.7 (86 to 97.3) | 0.55 |
| Lives in London | 493 | 23.9 | 38 | 32.3 (28.4 to 36.4) | 0.001 |
| Country of birth (UK or Ireland) | 1847 | 89.9 | 98 | 84.1 (75.5 to 90.1) | 0.064 |
| Health, self‐reported as good | 1650 | 80.1 | 103 | 88.5 (82.1 to 92.8) | 0.014 |
| Drinks alcohol regularly | 1427 | 69.4 | 87 | 74.2 (64 to 82.4) | 0.336 |
| Injected drugs, past year | 38 | 1.8 | 1 | 0.9 (0.2 to 4.3) | 0.393 |
| Mean (SD) age at first sex with male partner (years)† | 17.6 | 5.4 | 17.9 | 6.1 | 0.64 |
*Weighted unweighted denominator for men surveyed for Natsal.
†Weighted numerator for men surveyed in Natsal.
‡p Value associated with t test and χ2 statistics from comparing means and proportions.
§Working versus others, p = 0.216; not working versus others, p = 0.007.