Comparison 10. Not improved by physician's global assessment at follow‐up visit.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Number of participants not improved	6	891	Risk Ratio (M‐H, Fixed, 95% CI)	0.61 [0.48, 0.79]
1.1 Acute bronchitis studies	5	816	Risk Ratio (M‐H, Fixed, 95% CI)	0.44 [0.30, 0.65]
1.2 Subgroup with non‐purulent tracheobronchitis from URTI study	1	75	Risk Ratio (M‐H, Fixed, 95% CI)	1.03 [0.82, 1.29]