Comparison 6. Subgroup analyses: publication type.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Graft loss: censored for death	17	2540	Risk Ratio (M‐H, Random, 95% CI)	0.78 [0.62, 0.99]
1.1 Conference abstract only	1	50	Risk Ratio (M‐H, Random, 95% CI)	0.2 [0.03, 1.59]
1.2 Transplantation Proceedings	5	290	Risk Ratio (M‐H, Random, 95% CI)	0.49 [0.22, 1.11]
1.3 Full peer reviewed journal article	11	2200	Risk Ratio (M‐H, Random, 95% CI)	0.83 [0.65, 1.07]
2 Acute rejection: total	22	3301	Risk Ratio (M‐H, Random, 95% CI)	0.65 [0.57, 0.73]
2.1 Conference abstract only	2	83	Risk Ratio (M‐H, Random, 95% CI)	0.67 [0.34, 1.33]
2.2 Transplantation Proceedings	5	290	Risk Ratio (M‐H, Random, 95% CI)	0.46 [0.29, 0.74]
2.3 Full peer reviewed journal article	15	2928	Risk Ratio (M‐H, Random, 95% CI)	0.66 [0.57, 0.76]
3 Infection: CMV viraemia/syndrome	13	2880	Risk Ratio (M‐H, Random, 95% CI)	1.06 [0.85, 1.32]
3.1 Conference abstract only	0	0	Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]
3.2 Transplantation Proceedings	1	80	Risk Ratio (M‐H, Random, 95% CI)	7.0 [0.37, 131.28]
3.3 Full peer reviewed journal article	12	2800	Risk Ratio (M‐H, Random, 95% CI)	1.05 [0.84, 1.30]
4 Graft function: serum creatinine	15	2233	Mean Difference (IV, Random, 95% CI)	0.05 [‐0.05, 0.15]
4.1 Conference abstract only	2	83	Mean Difference (IV, Random, 95% CI)	‐0.09 [‐0.48, 0.30]
4.2 Transplantation Proceedings	3	166	Mean Difference (IV, Random, 95% CI)	‐0.16 [‐0.49, 0.18]
4.3 Full peer reviewed journal article	10	1984	Mean Difference (IV, Random, 95% CI)	0.07 [‐0.03, 0.18]