Table 1.
Baseline Demographic and Spirometric Characteristics
| Population Characteristics | Number (% of Patients) |
|---|---|
| (n=43) | |
| Male – n (%) | 16 (37.2%) |
| Age – years, median (range) | 26 (20 to 65) |
| Race | |
| African – n (%) | 10 (23.3%) |
| Mixed race – n (%) | 33 (76.7%) |
| Smoking Status | |
| Never smokers – n (%) | 12 (27.9%) |
| Former-smokers – n (%) | 11 (25.6%) |
| Current smokers – n (%) | 20 (46.5%) |
| Pack years for ever smokers – median (IQR) | 3.0 (1.4–8.1) |
| HIV positive – n (%) | 2 (4.7%) |
| Baseline Spirometry (Post-Bd) | |
| Median (IQR) | |
| FEV1 (L) | 1.97 (1.50 to 2.76) |
| FEV1 (%pred.) | 0.59 (0.50 to 0.77) |
| FVC (L) | 2.49 (1.90 to 3.02) |
| FVC (%pred.) | 0.63 (0.54 to 0.73) |
| FEV1/FVC (%) | 81.9 (75.2 to 88.1) |
| FEV1/FVC< LLN | 9 (20.9%) |
| FEV1/FVC< 0.70 | 5 (11.6%) |
Abbreviations: SD, standard deviation; FEV1, forced vital capacity in 1 sec; FVC, forced vital capacity; %pred., percentage of predicted value; L, litres; AFO, air flow obstruction; LLN, lower limit of normal.