Comparison 13. Dexamethasone 0.60 mg/kg compared to 0.15 mg/kg.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Croup score (change baseline ‐ 2 hours) by inpatient/outpatient	1	41	Mean Difference (IV, Random, 95% CI)	‐0.15 [‐0.29, ‐0.01]
1.1 Inpatient	1	41	Mean Difference (IV, Random, 95% CI)	‐0.15 [‐0.29, ‐0.01]
2 Croup score (change baseline ‐ 6 hours) by inpatient/outpatient	3	178	Mean Difference (IV, Random, 95% CI)	‐0.33 [‐0.50, ‐0.16]
2.1 Inpatient	1	41	Mean Difference (IV, Random, 95% CI)	‐0.38 [‐0.54, ‐0.22]
2.2 Outpatient	2	137	Mean Difference (IV, Random, 95% CI)	‐0.07 [‐0.50, 0.35]
3 Croup score (change baseline ‐ 12 hours) by inpatient/outpatient	2	113	Mean Difference (IV, Random, 95% CI)	0.17 [‐1.45, 1.78]
3.1 Inpatient	1	41	Mean Difference (IV, Random, 95% CI)	‐0.65 [‐0.80, ‐0.50]
3.2 Outpatient	1	72	Mean Difference (IV, Random, 95% CI)	1.0 [0.65, 1.35]
4 Croup score (change baseline ‐ 24 hours) by inpatient/outpatient	1	72	Mean Difference (IV, Random, 95% CI)	0.5 [0.14, 0.86]
4.1 Outpatient	1	72	Mean Difference (IV, Random, 95% CI)	0.5 [0.14, 0.86]
5 Return visits or (re)admissions or both by inpatient/outpatient	2	129	Risk Ratio (M‐H, Random, 95% CI)	0.92 [0.54, 1.55]
5.1 Outpatient	2	129	Risk Ratio (M‐H, Random, 95% CI)	0.92 [0.54, 1.55]
6 Length of stay by inpatient/outpatient	1	72	Mean Difference (IV, Random, 95% CI)	2.0 [‐2.16, 6.16]
6.1 Outpatient	1	72	Mean Difference (IV, Random, 95% CI)	2.0 [‐2.16, 6.16]
7 Additional treatments: epinephrine	1	65	Risk Ratio (M‐H, Random, 95% CI)	1.10 [0.07, 16.80]
8 Additional treatments: intubation/tracheotomy	1	41	Risk Difference (M‐H, Random, 95% CI)	0.0 [‐0.09, 0.09]
9 Additional treatments: mist tent	1	72	Risk Ratio (M‐H, Random, 95% CI)	1.13 [0.69, 1.84]
10 Additional treatments: supplemental glucocorticoids	1	57	Risk Ratio (M‐H, Random, 95% CI)	0.89 [0.27, 2.97]