1. Blinding of participants and personnel (performance bias).
| Benhamou 2002 | Engervall 1995 | Rasero 2000 | Timsit 2009 | Vokurka 2009 | |
| CRBSI | Not applicable | Not applicable | Not applicable | High risk | Not applicable |
| Suspected CRBSI | High risk | High risk | Not applicable | Not applicable | Not applicable |
| All‐cause mortality | Low risk | Low risk | Not applicable | Low risk | Not applicable |
| Catheter‐site infection | High risk | High risk | High risk | High risk | High risk |
| Skin damage | High risk | Not applicable | High risk | High risk | High risk |
| Pain | HIgh risk | Not applicable | Not applicable | Not applicable | High risk |
| Quality of life | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
| Cost | Not applicable | Not applicable | High risk | Not applicable | Not applicable |