Figure 2

Comparison of severity of asthma according to GINA guidelines, frequency of asthma symptoms/week and chest wheeze 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. Statistical difference in different parameter between three visits: NS; non significant difference, *; p < 0.05, **; p < 0.01, ***, p < 0.001.