Table 2—

Prevalence of respiratory symptoms and mean pulmonary function measurements

Whole sampleSubsample
Symptom
 Phlegm in the morning in winter7932 (17.2)1071 (19.2)
 Phlegm ≥3 months7928 (11.0)1071 (13.2)
 SOB with attacks of wheeze7928 (14.4)1071 (17.6)
Pulmonary function FEV1
 Male3050 (3.76±0.99)526 (2.69±0.72)
 Female3659 (3.76±0.99)557 (2.68±0.68)
  • Data are presented as n (%) and mean±sd

  • SOB: Shortness of breath

  • FEV1: forced expiratory volume in one second