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Table 1 The quality of the studies according to the Newcastle-Ottawa Quality Assessment Scale

From: Biomedical Risk Factors of Achilles Tendinopathy in Physically Active People: a Systematic Review

References Newcastle-Ottawa Quality Assessment Scale (NOS) score Total score
Selection Comparability Exposure/outcome
Abate et al. (2015) [41] 3 2 3 8
Abrahams et al. (2013) [23] 4 1 2 7
Brown et al. (2016) [36] 4 1 2 7
El Khoury et al. (2016) [38] 4 2 2 8
El Khoury et al. (2015) [35] 4 2 2 8
El Khoury et al. (2013) [24] 4 1 1 6
Gaida et al. (2009) [43] 4 2 2 8
Gaida et al. (2010) [44] 4 2 3 9
Gibbon et al. (2016) [37] 4 2 2 8
Hay et al. (2013) [25] 4 1 2 7
Longo et al. (2009) [42] 4 2 3 9
Mokone et al. (2005) [26] 4 2 2 8
Mokone et al. (2006) [27] 4 2 2 8
Nell et al. (2012) [28] 4 0 2 6
Owens et al. (2013) [40] 4 2 3 9
Posthumus et al. (2010) [29] 4 2 2 8
Raleigh (2009) [31] 4 2 2 8
Rickaby et al. (2015) [39] 4 1 2 7
Saunders et al. (2013) [30] 4 2 2 8
September et al. (2008) [34] 4 2 2 8
September et al. (2009) [33] 4 1 2 7
September et al. (2011) [32] 4 1 2 7