From: Frequency patterns of core constipation symptoms among the Asian adults: a systematic review
Study | Selectiona | Confoundersb | Outcomec | Total star | Qualityd |
---|---|---|---|---|---|
Xin et al. (2014) | * * | * | – | 3/6 | Satisfactory |
Zhao et al. (2011) | * * * | * | – | 4/6 | Good |
Dong et al. (2013) | * * | * | – | 3/6 | Satisfactory |
Yao et al. (2012) | * * | * | – | 3/6 | Satisfactory |
Lu et al. (2006) | * * | * * | – | 4/6 | Good |
Lee et al. (2014) | * * | * | – | 3/6 | Satisfactory |
Gonlachanvit & Patcharatrakul (2005) | * * | * | – | 3/6 | Satisfactory |
Kaboli et al. (2010) | * * * | * | * | 5/6 | Very good |
Shalmani et al. (2011) | * * * | * | * | 5/6 | Very good |
Roshandel et al. (2006) | * * | * | * | 4/6 | Good |