Age, sex, smoking, and education for subjects from a sample near Stockholm Arlanda airport and a sample from other parts of Stockholm county
| Variable | Airport sample (n=266) | County sample (n=2693) | Airport-county difference (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | Difference | 95% CI | ||||||
| Age (mean (SD)) | 45.1 (14.8) | 47.1 (15.6) | −2.0 | −4.0 to 0.0 | |||||||
| Male sex | 134 | 50.4 | 1221 | 45.3 | 5.1 | −2.0 to 10.2 | |||||
| Smoking: | |||||||||||
| Former | 75 | 28.2 | 822 | 30.5 | −2.3 | −7.8 to 3.2 | |||||
| Current | 61 | 22.9 | 556 | 20.7 | 2.2 | −2.7 to 7.5 | |||||
| Education: | |||||||||||
| 9 y school | 105 | 39.5 | 936 | 34.8 | 4.7 | −0.7 to 11.3 | |||||
| High school | 93 | 35.0 | 1030 | 38.3 | −3.3 | −9.4 to 2.3 | |||||
| University | 53 | 19.9 | 627 | 23.3 | −3.4 | −8.3 to 1.6 | |||||