Table 3.
Comparison of the mean difference of increase in the subjects’ PEFR in the intervention and control groups
| Time | Immediately after the intervention | One month after the intervention | |||
|---|---|---|---|---|---|
| Group | Comparison with the other two groups | Mean difference | P value | Mean difference | P value |
| Spacer | Control | 67.3 | <0.05* | 61.6 | <0.05* |
| Non-space | 7.1 | 0.556 | 8.5 | 0.26 | |
| Non- spacer | Spacer | -7.1 | 0.556 | -8.5 | 0.26 |
| Control | 60.1 | <0.05* | 53.1 | <0.05* | |
| Control | Spacer | -67.3 | <0.05* | -61.6 | <0.05* |
| Non-spacer | -60.1 | <0.05* | -53.1 | <0.05* | |
*P values<0.05 were considered as statistically significant