Fig. 3From: The state of asthma epidemiology: an overview of systematic reviews and their quality Box plots of conservative (top, solid) and liberal (bottom, hatched) total AMSTAR scores over indexed topics. Topics are coloured from blue to red corresponding to their underlying more detailed indices displayed in Fig. 1. Instead of box plots, data points are displayed for topics with less than 10 contributing systematic reviews. For description of box plots see legend to Fig. 2 Back to article page