Fig. 7From: Adding non-randomised studies to a Cochrane review brings complementary information for healthcare stakeholders: an augmented systematic review and meta-analysisPercentage patients who missed ≥1 day off work or school, forest plot by study design. BA: before-after study (without external control group); INT: intervention; CON: control; M-H: Mantel-Haenszel; CI: confidence intervalBack to article page