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Table 3 Bias ratings across all studies

From: The effect of commitment-making on weight loss and behaviour change in adults with obesity/overweight; a systematic review

  Sequence generation Allocation concealment Blinding Incomplete outcomea Incomplete outcomeb Selective reporting Other bias
Balk-Møller + ? ?
Black ? ? ? + + +
Clifford ? ?
Craighead ? ? ? n/a ? +
Dubbert ? ? ? + + + +
Franzini ? n/a ? ?
Kegler + + + + + ? +
Maruyama + ? + n/a +
Nyer ? + ? +
Ureda + ? ? ? ? ?
  1. aShort term data (2–6 weeks), bLonger term data (> 6 weeks), − High risk of bias, + Low risk of bias,? Unclear