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ACT score (mean and standard deviation) within each treatment group at baseline and at 6 and 12 weeks (the horizontal line at the ACT score of 20 indicates the cut-off point score).*Significant difference (P<.001) compared to corresponding baseline value within each group. #Significant difference (P<.01) between groups in the mean ACT scores at both 6 and 12 weeks visits compared to the corresponding measurements in the placebo group. ACT=asthma control test, NS=Nigella sativa
