Effectiveness of Air Filters in Allergic Rhinitis: A Systematic Review and Meta-Analysis

Figure 3

(a) Forest plot of medication use pooled with as-needed medication use scores from the study by Wood et al. and medication scores from the studies of Reisman et al. and Park et al. (b) Forest plot of medication use pooled with maintain medication use scores from the study by Wood et al. and medication scores from the studies of Reisman et al. and Park et al.

(a)

(b)