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Table 2 Newcastle-Ottawa Scale risk of bias assessment of observational studies

From: The association between balance and free-living physical activity in an older community-dwelling adult population: a systematic review and meta-analysis

Study Selection
(max. 5 stars)
Comparability
(max. 2 stars)
Outcome
(max. 3 stars)
Total
(max. 10 stars)
Aoyagi et al., 2009 [47] *** * *** 7
Brooke-Wavell & Cooling, 2008 [50] * * *** 5
Buatois et al., 2007 [51] * * *** 5
Dewhurst et al., 2014 [69] **   ** 4
Fong & Ng, 2006 [52] * * *** 5
Fong et al.,2014 [53] * * *** 5
Gao et al., 2011[48] *** * *** 7
Gauchard et al., 1999 [54] *   *** 4
Gauchard et al., 2001[55] *   *** 4
Gauchard et al., 2003[56] *   ** 3
Gaudagnin et al., 2015 *   *** 4
Gyllensten et al., 2010 [64] *** * *** 7
Hakim et al., 2004[70] *   *** 4
Hakim et al., 2010 [57] *   *** 4
Lu et al., 2013[65] * * *** 5
Perrin et al., 1999[72] *   *** 4
Rahal et al., 2015[58]    ** 2
Tsang & Hui-Chan, 2004 [59] ***   *** 6
Tsang & Hui-Chan, 2005 [60] *** * *** 7
Tsang et al., 2004 [66] ***   *** 6
Tsang & Hui-Chan, 2006 [61] *** * *** 7
Tsang & Hui-Chan, 2010 [62] *** * *** 7
Wayne et al., 2014 [49] *** * *** 7
Wong et al., 2001 [67] * * *** 4
Wong et al., 2011 [68]   * *** 4
Zhang et al., 2011 [63]   * *** 4