Dependent variables | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chronic productive cough | Physician-diagnosed asthma | Recurrent wheeze | |||||||||||
Study year 1996 | Study year 2006 | Study year 1996 | Study year 2006 | Study year 1996 | Study year 2006 | ||||||||
Independent variables | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | |
Age | 20-29 years | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
30-39 years | 1.14 | (0.82-1.60) | 0.87 | (0.59-1.28) | 0.82 | (0.65-1.05) | 0.78 | (0.60-1.01) | 1.04 | (0.83-1.31) | 1.18 | (0.88-1.58) | |
40-49 years | 1.01 | (0.73-1.42) | 0.85 | (0.59-1.22) | 0.60 | (0.46-0.77) | 0.64 | (0.50-0.83) | 0.82 | (0.65-1.04) | 1.07 | (0.81-1.41) | |
50-59 years | 1.80 | (1.32-2.47) | 1.07 | (0.76-1.52) | 0.55 | (0.42-0.72) | 0.62 | (0.48-0.80) | 1.03 | (0.81-1.29) | 1.25 | (0.96-1.64) | |
60-69 years | 2.59 | (1.90-3.53) | 1.35 | (0.95-1.92) | 0.89 | (0.69-1.15) | 0.60 | (0.46-0.79) | 1.31 | (1.04-1.65) | 1.23 | (0.93-1.63) | |
Sex | Female | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
Male | 1.17 | (0.98-1.41) | 1.55 | (1.25-1.92) | 1.05 | (0.89-1.24) | 0.90 | (0.77-1.06) | 0.98 | (0.85-1.13) | 1.19 | (1.01-1.39) | |
Family history of asthma | No/Don’t know | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
Yes | 1.81 | (1.49-2.21) | 2.37 | (1.91-2.95) | 3.26 | (2.76-3.85) | 3.39 | (2.88-4.00) | 2.41 | (2.07-2.79) | 2.71 | (2.30-3.20) | |
Smoking habits | Non-smokers | 1 | 1 | 1 | 1 | 1 | 1 | ||||||
Ex-smokers | 0.89 | (0.69-1.14) | 1.17 | (0.89-1.54) | 1.33 | (1.09-1.64) | 1.41 | (1.15-1.72) | 1.34 | (1.10-1.62) | 1.50 | (1.22-1.85) | |
<5 cig/day | 0.60 | (0.35-1.02) | 1.41 | (0.87-2.28) | 1.01 | (0.70-1.46) | 1.09 | (0.74-1.61) | 1.70 | (1.26-2.30) | 2.18 | (1.55-3.06) | |
5-14 cig/day | 1.43 | (1.09-1.86) | 1.61 | (1.14-2.27) | 0.85 | (0.65-1.12) | 1.33 | (1.01-1.74) | 2.61 | (2.14-3.17) | 3.09 | (2.45-3.91) | |
>14 cig/day | 3.07 | (2.35-4.02) | 3.31 | (2.23-4.91) | 0.95 | (0.67-1.34) | 0.68 | (0.41-1.14) | 3.49 | (2.77-4.40) | 3.32 | (2.39-4.63) |