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Table 6 Primary studies: level of evidence and methodological design

From: Effectiveness of Pilates exercise in treating people with chronic low back pain: a systematic review of systematic reviews

NHMRC Level of Evidence Methodological Design Primary Studies
II Randomised Controlled Trial (n=4) Anderson (2005) [24]*
Gagnon (2005) [28]*
MacIntyre (2006) [29]*
Rydeard et al. (2006) [25]
III Pseudo-Randomised Controlled Trial (n=5) da Fonseca et al. (2009) [26]
Gladwell et al. (2006) [31]
O’Brien et al. (2006) [32]**
Quinn (2005) [35]*
Vad et al. (2007) [30]
IV Parallel Case Series (n=1) Donzelli et al. (2006) [27]
  1. * Unpublished theses.
  2. ** Abstract only.