Skip to main content

Table 2 New-Castle Ottawa Scale Ratings

From: Needle exchange programs for the prevention of hepatitis C virus infection in people who inject drugs: a systematic review with meta-analysis

Study

Selection

Comparability

Exposure/Outcome

Hagan 1995 [40]

★★★

★★

★

Hagan 2004 [41]

★★★★

★★

★★

Holtzman 2009 [42]

★★★★

★★

★

Patrick 2001 [43]

★★★★

★

★★

Roy 2007 [44]

★★★

★

★

Todd 2015 [45]

★★★★

★★

★★