Days of lost productivity in hospital-recruited COPD cases, population-recruited COPD cases and population-recruited control subjects by gender, smoking status and education
| Gender | Smoking status | Education | |||||
|---|---|---|---|---|---|---|---|
| Men | Women | Current | Ex | Primary | Secondary | University | |
| Hospital-recruited COPD cases, median (IQR) | 314 (355)* | 365 (140.5) | 318 (353) | 365 (278) | 365 (120)* | 365 (337) | 16.5 (362) |
| Population-recruited COPD cases, median (IQR) | 2.5 (28)* | 132.5 (365) | 7 (295) | 37 (365) | 4 (365) | 28 (332) | 4 (76) |
| Population-recruited controls, median (IQR) | 1.5 (8)* | 8 (32) | 5 (34) | 3.5 (14) | 29 (202.5) | 5 (16.5) | 1 (14) |
COPD, here defined by FEV1/FVC<0.7 postbronchodilation and FEV1 <80% of predicted values.
*p<0.05, Kruskal-Wallis test, adjusted for ties.
COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity.