Comparison 2. Serum creatinine.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Serum creatinine (all studies)	15	794	Mean Difference (IV, Random, 95% CI)	3.23 [‐0.80, 7.26]
2 Serum creatinine (excluding high risk of bias)	7	429	Mean Difference (IV, Random, 95% CI)	2.64 [‐1.28, 6.55]
3 Serum creatinine (excluding high attrition bias)	11	601	Mean Difference (IV, Random, 95% CI)	2.96 [‐1.57, 7.49]
4 Serum creatinine (excluding high risk of bias or high attrition bias)	6	331	Mean Difference (IV, Random, 95% CI)	3.57 [‐1.35, 8.48]