Table 1.
Demographic characteristics of the patients in the three groups
| Demographic variables | Control group | Non-spacer group | Spacer group | P value | |
|---|---|---|---|---|---|
| N (%) | N (%) | N (%) | |||
| Gender | Male | 13 (43.3) | 8 (26.7) | 10 (33.3) | 0.430 |
| Female | 17 (56.7) | 22 (73.3) | 20 (66.7) | ||
| Education level | Elementary school | 10 (33.3) | 2 (6.7) | 5 (16.7) | 0.102 |
| Middle school | 4 (13.3) | 7 (23.3) | 2 (6.7) | ||
| High school and diploma | 10 (33.3) | 11 (36.6) | 15 (50) | ||
| Academic | 6 (20) | 10 (33.3) | 8 (26.7) | ||
| Employment status | Homemaker | 14 (46.7) | 17 (56.7) | 10 (33.3) | 0.062 |
| Worker | 1 (3.3) | 1 (3.3) | 0 (0) | ||
| Student | 1 (3.3) | 0 (0) | 6 (20) | ||
| Self-employed | 6 (20) | 1 (3.3) | 5 (16.7) | ||
| Employee and retiree | 8 (26.7) | 11 (36.7) | 9 (30) | ||
| Mean age (yrs±SD) | 44.7±10.8 | 41.5±9.1 | 42.7±13.8 | 0.550 | |
| Duration of suffering from asthma (yrs±SD) | 2.8±0.94 | 2.7±0.95 | 2.6±0.85 | 0.690 | |
| Duration of using MDI (yrs±SD) | 2.7±0.91 | 2.6±0.95 | 2.4±0.97 | 0.591 | |