Table 2

Crude prevalence in 1972 and 1998–1999, and adjusted odds ratios (AORs) comparing 1998–1999 with 1972, of asthma diagnosis, wheezing and attacks of breathlessness by sex among responders to the Oslo asthma surveys in 1972 and 1998–1999

19721998–1999AOR#
Asthma diagnosis %
 Males3.6 (3.2–4.0)7.6 (6.9–8.3)2.3 (1.9–2.7)
 Females3.2 (2.8–3.6)10.7 (9.9–11.5)3.6 (3.1–4.2)
Wheezing %
 Males20.3 (19.4–21.2)26.3 (25.1–27.6)1.6 (1.5–1.8)
 Females15.6 (14.8–16.3)25.3 (24.1–26.4)1.8 (1.6–1.9)
Attacks of breathlessness %
 Males11.6 (10.9–12.3)14.0 (13.0–14.9)1.4 (1.2–1.5)
 Females13.4 (12.7–14.1)19.0 (18.0–20.0)1.4 (1.3–1.6)
  • Data are presented as prevalence (95% confidence interval)

  • #: 1972 is reference (adjusted for age and smoking habit, and separate models for males and females).