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Table 2 Quality of the studies on the Newcastle-Ottawa scale

From: Meta-analysis of ART outcomes in women with different preconception TSH levels

Study Selection Comparability Exposure/Outcome Total Stars
Coelho 2016 ***** * ** 8
Aghahosseini 2013 **** ** ** 8
Mintziori 2014 **** ** * 7
Unuane 2017 *** ** ** 7
Michalakis 2011 **** ** * 7
Muller 1999 *** ** ** 7
Chai 2014 **** * ** 7
Weghofer 2015 **** ** * 7
Baker 2006 *** ** ** 7
Karmon 2014 **** ** ** 8
Cai 2017 **** ** ** 8
Seungdamrong 2017 **** ** ** 8
Zhang 2012 ***** ** * 8
Ba 2013 *** ** ** 7
Reh 2010 *** ** ** 7
Zeng 2014 ***** * ** 8
Gingold 2016 **** ** * 7
Wu 2017 **** ** * 7
  1. * means 1 score