a trend toward significanceP = 0.067
Meta-regression analysis on the effect of BDP/FF/G FDC on FEV 1 expressed as % predicted identified smoking habit as a significant effect modifier (coefficient 0.160, P < 0.05), with current smokers showing a greater treatment effect than non-smokers and reported a trend toward significance for male sex (coefficient 0.172, P = 0.067).