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Table 1 Baseline characteristics of the studied population

From: Different risk factor patterns for adult asthma, rhinitis and eczema: results from West Sweden Asthma Study

  Age (years) Sex  
18–39 40–59 60–77 P value1 Men Women P value2 Total (95 % CI)
Current asthma 12.3 13.4 9.4 0.216 10.1 13.2 0.122 11.8 (9.9–13.6)
Asthma ever 17.8 16.2 11.8 0.024 14.0 16.2 0.328 15.2 (13.1–17.3)
Current rhinitis 48.8 43.8 36.6 0.001 44.5 41.4 0.314 42.8 (40.0–45.7)
Rhinitis ever 53.7 48.5 39.5 <0.001 50.0 44.4 0.060 47.0 (44.2–50.0)
Current eczema 12.9 17.0 9.7 0.167 11.3 15.4 0.040 13.5 (11.5–15.4)
Eczema ever 49.1 46.8 38.2 0.003 36.5 51.6 <0.001 44.6 (41.8–47.5)
Asthma medication 12 m 11.0 12.5 10.7 0.864 9.8 13.0 0.098 11.5 (9.7–13.4)
Rhinitis medication 12 m 33.7 30.8 19.9 <0.001 27.1 28.9 0.515 28.1 (25.5–30.6)
Allergic sensitization 40.9 31.0 18.6 <0.001 36.0 24.2 <0.001 29.7 (27.0–32.4)
Smoking
Never smoker 70.6 52.1 49.5 <0.0013 58.5 54.5 0.0153 56.4 (53.5–59.2)
Ex-smoker 11.0 29.7 37.6 28.3 26.0 27.1 (24.5–29.6)
Current smoker 18.4 18.2 12.9 13.1 19.5 16.5 (14.4–18.7)
Family history
Asthma 23.8 20.2 15.0 0.004 15.8 22.6 0.004 19.5 (17.2–21.8)
Rhinitis 42.9 35.2 14.0 <0.001 25.3 35.3 <0.001 30.6 (27.9–33.4)
Asthma and rhinitis 16.7 12.6 4.7 <0.001 7.9 14.1 0.002 11.2 (9.4–13.1)
Asthma or rhinitis 49.8 42.1 24.0 <0.001 32.9 43.1 <0.001 38.4 (35.6–41.2)
Body mass index
Underweight (<20) 10.4 3.0 1.0 <0.0013 1.5 7.0 <0.0013 4.4 (3.3–5.6)
Normal (20–25) 54.9 34.7 28.0 33.2 42.4 38.1 (35.4–40.9)
Overweight (25–30) 26.1 45.0 52.4 50.7 34.8 42.2 (39.3–45.0)
Obese (>30) 8.6 17.2 18.6 14.6 15.9 15.3 (13.2–17.3)
Occupational GDF 24.3 24.6 25.3 0.750 36.2 14.9 <0.001 24.7 (22.3–27.2)
Metropolitan domicile 70.6 50.9 52.4 <0.001 54.8 58.6 0.214 57.0 (54.0–60.0)
Raised on a farm 7.7 11.8 19.9 <0.001 13.9 12.8 0.604 13.3 (11.4–15.3)
  1. Prevalence (%) and difference (p value) by sex and age group. Total prevalence with 95 % confidence intervals (95 % CI)
  2. 1Test for trend
  3. 2Fishers exact two sided test
  4. 3Pearson chi2 test for in group difference