Table 4 Subject characteristics – Algorithm replication population
From: A retrospective study of two populations to test a simple rule for spirometry
|  | Normal n = 224 | Obstructed n = 258 | Restricted n = 191 |
|---|---|---|---|
FEV1 % predicted [mean (SD)] | 94.84 (9.51) | 56.20 (13.85) | 70.52 (10.00) |
FEV1 (L)(± SD) | 2.79 (0.65) | 1.73 (0.56) | 2.14 (0.57) |
Sex (% male vs. female) | 50 vs. 50 | 71 vs. 29 | 52 vs. 48 |
Smoke Status (Current vs. Past) | 58 vs. 42 | 65 vs. 35 | 58 vs. 42 |
BMI [mean (SD)] | 30.06 (6.75) | 27.01 (6.25) | 31.65 (7.19) |
Age [mean (SD)] | 59.90 (9.68) | 65.41 (10.73) | 61.09 (9.60) |
Pack years [mean (SD)] | 48.10 (43.89) | 59.55 (36.81) | 50.90 (46.88) |