Comparison 2. Symptoms.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Wheeze	2		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Day 1	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 Day 3	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.27 [0.12, 0.62]
1.3 Day 5	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	5.55 [1.18, 26.05]
1.4 Day 7	1	295	Odds Ratio (M‐H, Fixed, 95% CI)	2.18 [0.71, 6.68]
2 Shortness of breath	2		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 Day 1	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
2.2 Day 3	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.75 [0.34, 1.66]
2.3 Day 5	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.66 [0.28, 1.55]
2.4 Day 7	1	295	Odds Ratio (M‐H, Fixed, 95% CI)	4.46 [1.01, 19.72]
3 Oxygen saturation (< 96%)	1		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Day 1	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	1.02 [0.47, 2.24]
3.2 Day 3	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	2.48 [0.83, 7.44]
3.3 Day 5	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	1.83 [0.34, 9.91]
4 Not smiling socially	1		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
4.1 Day 1	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.83 [0.36, 1.91]
4.2 Day 3	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.83 [0.24, 2.91]
4.3 Day 5	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
5 Feeding difficulties	1		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
5.1 Day 1	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.5 [0.23, 1.10]
5.2 Day 3	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.83 [0.24, 2.91]
5.3 Day 5	1	104	Odds Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
6 Fever	1		Odds Ratio (M‐H, Fixed, 95% CI)	Totals not selected
6.1 Day 2	1		Odds Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
7 Cough	1		Odds Ratio (M‐H, Fixed, 95% CI)	Subtotals only
7.1 Day 7	1	295	Odds Ratio (M‐H, Fixed, 95% CI)	3.33 [0.96, 11.53]