Demographic structure of the participants in Natsal 1990 (aged 16–44) and Natsal 2000, weighted for differential selection, compared with population estimates supplied by the Office for National Statistics
| Natsal 1990 (%) | Mid 1991 census figures (%) | Difference Natsal, census (95% CI) | Natsal 2000 (%) | Mid 1999 population estimates (%) | Difference Natsal, population estimates (95% CI) | |
|---|---|---|---|---|---|---|
| Men | 44.5 | 50.7 | −6.2 (−7.0 to −5.4) | 43.5 | 51.0 | −7.5 (−8.3 to −6.7) |
| Age (years) | ||||||
| 16–19 | 13.4 | 12.6 | 0.9 (0.2 to 1.6) | 13.6 | 12.2 | 1.4 (0.6 to 2.3) |
| 20–24 | 18.7 | 18.5 | 0.2 (−0.8 to 1.2) | 14.3 | 14.5 | −0.2 (−1.2 to 0.9) |
| 25–29 | 18.3 | 19.6 | −1.3 (−2.3 to −0.4) | 15.6 | 17.7 | −2.0 (−2.8 to −1.2) |
| 30–34 | 16.5 | 17.3 | −0.8 (−1.6 to 0.1) | 19.6 | 19.8 | −0.2 (−1.1 to 0.7) |
| 35–39 | 16.1 | 15.3 | 0.8 (0.0 to 1.7) | 18.7 | 19.4 | −0.7 (−1.6 to 0.1) |
| 40–44 | 17.0 | 16.8 | 0.3 (−0.6 to 1.2) | 18.2 | 16.4 | 1.7 (0.9 to 2.6) |
| Region | ||||||
| London | 11.8 | 13.4 | −1.6 (−2.4 to –0.8) | 11.8 | 14.6 | −2.7 (−3.3 to −2.2) |
| Unweighted base | 6000 | 4762 | ||||
| Women | 55.5 | 49.5 | 6.2 (5.4 to 7.0) | 56.5 | 49.0 | 7.5 (6.7 to 8.3) |
| Age (years) | ||||||
| 16–19 | 12.8 | 12.2 | 0.6 (−0.2 to 1.3) | 11.0 | 12.0 | −1.0 (−1.6 to −0.4) |
| 20–24 | 16.3 | 18.2 | −1.9 (−2.8 to −1.0) | 13.4 | 14.4 | −1.0 (−1.8 to −0.1) |
| 25–29 | 19.8 | 19.4 | 0.4 (−0.6 to 1.4) | 17.1 | 17.4 | −0.3 (−1.1 to 0.5) |
| 30–34 | 17.6 | 17.4 | 0.2 (−0.7 to 1.0) | 20.7 | 19.8 | 1.0 (0.1 to 1.8) |
| 35–39 | 16.5 | 15.6 | 0.9 (0.1 to 1.8) | 20.0 | 19.5 | 0.5 (−0.3 to 1.4) |
| 40–44 | 17.0 | 17.2 | −0.2 (−1.0 to 0.7) | 17.8 | 16.9 | 0.9 (0.0 to 1.7) |
| Region | ||||||
| London | 11.3 | 13.7 | −2.4 (−3.2 to −1.7) | 11.6 | 14.4 | −2.8 (−3.3 to −2.3) |
| Unweighted base | 7765 | 6399 | ||||