Comparison 18. Duration of sensory block: perineural versus intravenous dexamethasone.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Duration of sensory block	9	720	Mean Difference (IV, Random, 95% CI)	3.13 [1.68, 4.58]
2 Duration of sensory block additive versus no additive subgroups	9	720	Mean Difference (IV, Random, 95% CI)	3.13 [1.68, 4.58]
2.1 Additive	3	331	Mean Difference (IV, Random, 95% CI)	3.94 [2.66, 5.21]
2.2 No additive	6	389	Mean Difference (IV, Random, 95% CI)	2.67 [0.00, 5.34]
3 Duration sensory block high‐dose versus low‐dose dexamethasone subgroups	9	720	Mean Difference (IV, Random, 95% CI)	3.13 [1.68, 4.58]
3.1 High‐dose dexamethasone	6	508	Mean Difference (IV, Random, 95% CI)	2.35 [0.04, 4.66]
3.2 Low‐dose dexamethasone	3	212	Mean Difference (IV, Random, 95% CI)	4.14 [2.48, 5.81]
4 Duration sensory block high/unclear versus low risk of bias subgroups	9	720	Mean Difference (IV, Random, 95% CI)	3.13 [1.68, 4.58]
4.1 High/unclear risk of bias	3	162	Mean Difference (IV, Random, 95% CI)	4.67 [2.29, 7.04]
4.2 Low risk of bias	6	558	Mean Difference (IV, Random, 95% CI)	2.30 [0.23, 4.37]