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Table 1 Summary of methodological quality assessment scores

From: Systematic review of functional training on muscle strength, physical functioning, and activities of daily living in older adults

Author and publication year (possible score) Reporting (11) External validity (3) Internal validity—bias (7) Internal validity—confounding (6) Power (5) Total (32)
Alexander et al., 2001 [9] 11 3 5 3 1 23
Clemson et al., 2012 [13] 10 2 6 5 1 24
Cress et al., 1996 [46] 8 1 5 3 0 17
de Vreede et al., 2005 [35] 11 2 6 3 1 23
Dobek et al., 2006 [17] 9 0 4 1 1 15
Gillies et al., 1999 [7] 10 1 4 3 0 18
Giné-Garriga et al., 2010 [51] 11 2 5 5 1 24
Helbostad et al., 2004 [8] 11 0 6 6 1 24
Krebs et al., 2007 [18] 11 2 7 5 0 25
Littbrand et al., 2009 [1] 11 3 7 6 1 28
Manini et al., 2007 [12] 11 1 4 5 1 22
Skelton et al., 1996 [31] 10 2 5 4 1 22
Whitehurst et al., 2005 [38] 8 2 5 2 1 18
  1. The number in parentheses indicates the possible maximum score of each rating category