Offering HCV treatment to prisoners is an important opportunity: key principles based on policy and practice assessment in Europe

Stöver, H.; Meroueh, F.; Marco, A.; Keppler, K.; Saiz de la Hoya, P.; Littlewood, R.; Wright, N.; Nava, F.; Alam, F.; Walcher, S.; Somaini, L.

doi:10.1186/s12889-018-6357-x

Table 3 Analysis of risk of bias

From: Offering HCV treatment to prisoners is an important opportunity: key principles based on policy and practice assessment in Europe

Author	External validity				Internal validity
Author	Target population is a close representation of the national population	Sampling frame a true or close representation	Some form of random selection	Minimal likelihood of nonresponse bias	Data collected directly from the subjects	Have an acceptable case definition	Study instrument that measured the parameter valid reliable	Same mode of data collection for all subjects	Length of the shortest prevalence period appropriate	Numerator and denominator for the parameter appropriate	Have a summary item on the overall risk of study bias
Crespo 2017 [49]	–	+	–	+	+	+	?	?	?	+	–
Gencat 2018 [50]	–	+	–	?	?	?	?	?	+	?	–
Marco 2017 [51]	–	+	+	?	–	+	?	?	–	+	–
Ministry of Interior 2017 [52]	+	+	?	?	+	+	+	+	+	+	–
Tellez 2017 [53]	–	+	+	+	+	+	+	+	?	+	–
Saiz de la Hoya [54]	+	+	–	+	+	+	?	+	?	+	–
Murcia 2009 [55]	–	+	–	+	+	+	+	+	?	+	–
Public Health England 2017 [43]	+	+	–	–	+	+	+	+	+	+	–
Public Health England 2015 [56]	+	+	?	?	+	+	+	+	+	?	–
Darke 2015 [57]	+	–	?	?	+	?	+	+	+	+	–
Duncan 2013 [59]	–	+	–	?	+	+	+	+	+	+	?
Kirwan 2011 [60]	+	+	?	+	+	+	+	+	+	+	+
Meroueh 2017 [61]	–	+	?	?	–	+	+	+	+	+	–
Jacomet 2016 [62]	–	–	–	–	+	+	+	+	+	+	+
Semaille 2013 [63]	+	+	+	+	+	+	+	+	+	+	+
Meroueh 2008 [64]	–	–	?	?	+	+	–	+	?	?	–
Roux 2014 [65]	–	–	–	+	+	+	+	+	+	+	+
Verneuil 2009 [66]	–	+	+	–	+	+	+	+	–	+	+
Agenzia Regionale di Sanità dellaToscana [67]	+	+	+	+	+	+	+	?	+	+	+
Sagnelli 2012 [68]	+	+	–	+	+	+	+	+	–	+	+
Brandolini 2013 [69]	–	+	–	+	+	+	+	+	+	+	+
La Torre 2012 [70]	–	+	–	?	+	+	+	+	+	+	+
Voller 2011 [71]	?	?	+	?	?	?	?	?	+	?	?
Eckert & Weilandt 2008 [72]	+	+	?	+	+	?	–	+	+	+	+
Radun 2007 [73]	+	+	–	+	+	?	+	+	+	+	?
Schulte 2009 [74]	+	+	+	–	–	+	+	+	+	+	+
Meyer 2007 [75]	–	+	–	+	+	+	+	+	+	+	–

+ (Yes) represents low risk of bias, − (No) represents high risk of bias,? (Unclear) represents uncertain risk of bias due to insufficient information

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ISSN: 1471-2458

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