Table 1.
Prevalence (%) of family history of asthma, smoking habits, respiratory symptoms, and asthma in the population, by age groups and by sex.
| Age groups |
Sex |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| All |
30–39 y |
40–49 y |
50–59 y |
60–69 y |
p χ2* |
Women |
Men |
p χ2** |
|
| (n = 9,992) | (n = 2,050) | (n = 2,455) | (n = 2,868) | (n = 2,619) | (n = 5,030) | (n = 4,962) | |||
| Family history of asthma | 22.0 | 24.5 | 24.7 | 22.2 | 17.4 | <0.001 | 25.0 | 19.0 | <0.001 |
| Smoking habits | |||||||||
| Non-smoker | 54.7 | 73.7 | 57.9 | 45.6 | 46.6 | 52.9 | 56.5 | ||
| Ex-smoker | 25.7 | 13.6 | 20.4 | 30.3 | 35.0 | <0.001 | 24.4 | 26.9 | <0.001 |
| Current smoker | 19.2 | 12.4 | 21.0 | 23.7 | 17.8 | 22.3 | 16.0 | ||
| Respiratory symptoms and asthma | |||||||||
| Productive cough | 9.1 | 6.0 | 7.9 | 9.7 | 12.0 | <0.001 | 9.0 | 9.2 | 0.697 |
| Recurrent wheeze | 12.1 | 11.3 | 12.5 | 12.6 | 11.8 | 0.485 | 12.1 | 12.1 | 0.970 |
| Allergic rhino-conjunctivitis | 23.9 | 31.4 | 28.3 | 22.3 | 15.5 | <0.001 | 25.6 | 22.1 | <0.001 |
| Rhinitis | 21.6 | 23.8 | 22.5 | 21.3 | 19.4 | 0.002 | 22.8 | 20.4 | 0.003 |
| Current asthma | 9.2 | 9.8 | 10.3 | 8.5 | 8.4 | 0.048 | 10.1 | 8.3 | 0.002 |
| Allergic asthma | 5.4 | 6.9 | 6.9 | 5.1 | 3.1 | <0.001 | 6.0 | 4.8 | 0.011 |
| Non-allergic asthma | 3.8 | 2.9 | 3.3 | 3.5 | 5.3 | <0.001 | 4.1 | 3.4 | 0.080 |
*comparing age-groups.
**comparing sex.
***comparing all SSYK/NYK/SEI groups respectively.
****comparing VGDF to No VGDF.