Table 1

Prevalence of respiratory symptoms in 80 non-smokers and 18 ever-smokers (ex-smokers and current smokers) at the 22 year check up

Non-smokers Ever smokers
Yes/total%Yes/total%
*p<0.05; †p<0.01 (χ2 test).
Current phlegm11/7814%4/1822%
Recurrent wheezing18/8023%10/1856%†
Exertional dyspnoea11/8014%6/1833%*