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Table 2 The reasons that we deduced why studies may have been excluded from each review

From: How explicable are differences between reviews that appear to address a similar research question? A review of reviews of physical activity interventions

Review Includeda Publication date Population outside scope of review Intervention outside scope of review Outcomes outside scope of review Design outside scope of review Reason for exclusion is unclear
Dobbins and Beyers, 1999 6 13 0 13 0 8 0
Fogelholm and Lahti Koski, 2002 4 6 0 3 18 1 2
Jackson, 2005a 0 2 0 25 24 16 0
Jackson, 2005b 0 2 0 25 6 16 0
King, 1998 7 6 0 1 0 0 12
Pate et al., 2000 3 3 20 3 0 1 0
Murphy and Bauman, 2007 3 0 0 22 0 0 2
Sharpe, 2003 14 2 2 0 0 1 7
  1. aThis analysis is based on 26 studies: it excludes the two studies without available abstracts online.
  2. Categories are non-exclusive: there can be more than one reason why a primary study was not included in a review.