Table 1 Details of subjects at entry
From: The Darlington and Northallerton Long Term Asthma Study: pulmonary function
Male | Female | ||
|---|---|---|---|
n | 457 | 455 | |
Age (years)(sd) | 50.4(15.4) | 49.3(16.3) | |
Duration of asthma (years)(sd) | 17.0(16.2) | 18.6(15.4) | |
Atopic n(%) | 258(56.5) | 227(49.9) | |
Asthma n(%) | childhood | 124(27.1) | 131(28.8) |
gap | 53(11.6) | 42(9.2) | |
adult | 280(61.3) | 282(63.3) | |
Social Class n(%) | 1–2 | 131(28.8) | 139(30.5) |
3 | 168(36.9) | 180(39.6) | |
4–5 | 156(34.3) | 136(29.9) | |
Smoking Habit n(%) | never | 147(32.2) | 247(54.3) |
ever | 239(52.3) | 161(35.4) | |
current | 71(15.5) | 47(10.3) | |
Pulmonary Function(sd) | Actual FEV1 l. | 2.50(1.09) | 1.97(0.79) |
Best FEV1 l. | 2.60(1.08) | 2.08(0.82) | |
Best FVC l. | 4.17(1.25) | 3.05(0.84) | |
Best PEF l/min | 465.7(113.7) | 382.0(85.1) | |
Actual/Best PEF % | 84.4(13.7) | 83.2(15.9) | |