Table 2.
Summary of demographic and baseline data
| Variable | Treatment group
|
|
|---|---|---|
| Hydrofluoroalkane inhaler (n=5402) | Chlorofluorocarbon inhaler (n=1212) | |
| Mean (SD) age (years) | 40.6 (20.8) | 42.7 (22.0) |
| Sex (% (No)): | ||
| Male | 46.9 (2534) | 47.7 (578) |
| Female | 53.1 (2865) | 52.3 (633) |
| Ethnic origin (% (No)): | ||
| White | 94.5 (5102) | 94.5 (1145) |
| Non-white | 5.5 (297) | 5.5 (67) |
| Diagnosis (% (no)): | ||
| Asthma | 88.1 (4758) | 87.2 (1057) |
| Chronic obstructive pulmonary disease | 4.8 (257) | 5.0 (61) |
| Asthma and chronic obstructive pulmonary disease | 3.5 (191) | 4.1 (50) |
| Other | 3.7 (196) | 3.5 (44) |
Data for a few patients were unavailable.