Comparison 1. Internal jugular versus subclavian CVA routes: long‐term catheterization.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Catheter related infectious complications	2		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
1.1 Exit site infection	1	200	Risk Ratio (M‐H, Random, 95% CI)	7.00 [0.88, 55.86]
1.2 Port‐related bacteraemia and/or pocket infections	1	240	Risk Ratio (M‐H, Random, 95% CI)	0.35 [0.04, 3.32]
2 Catheter related thrombotic complications	1	240	Risk Ratio (M‐H, Random, 95% CI)	1.97 [0.87, 4.48]
3 Immediate mechanical complications	2		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
3.1 Total mechanical complications	2	468	Risk Ratio (M‐H, Random, 95% CI)	1.0 [0.21, 4.84]
3.2 Major mechanical complications	2	468	Risk Ratio (M‐H, Random, 95% CI)	0.33 [0.01, 8.09]
4 Late mechanical complications	2	468	Risk Ratio (M‐H, Random, 95% CI)	1.67 [0.41, 6.79]
5 Leaving the studies early	1		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
5.1 Cancelled operation	1	270	Risk Ratio (M‐H, Random, 95% CI)	5.07 [0.25, 104.71]
5.2 Withdrew informed consent	1	270	Risk Ratio (M‐H, Random, 95% CI)	2.03 [0.19, 22.12]
5.3 Had no data available	1	270	Risk Ratio (M‐H, Random, 95% CI)	1.10 [0.52, 2.32]