Comparison 1. Chronic Infection: ß‐carotene supplementation.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Days of antibiotic consumption	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
1.1 Over 1 month and up to 3 months	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
2 Respiratory function (FEV1 % predicted)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
2.1 Over 1 month and up to 3 months	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
3 Mortality	1		Odds Ratio (M‐H, Fixed, 95% CI)	Totals not selected
3.1 Over 1 month and up to 3 months	1		Odds Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]