Figure 1

Comparison of symptom score of usual care (a) and intervention (b) groups of asthmatic patients at the beginning (fine filled bars), middle (medium filled bars) and at the end (coarse filled bars) of a two month study period. Statistical difference in different parameter between three visits: NS; non significant difference, *; p < 0.05, **; p < 0.01, ***, p < 0.001.