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Table 3 Quality assessment using risk of bias assessment tool for non-randomized studies

From: A meta-analysis of observational studies on anticholinergic burden and fracture risk: evaluation of conventional burden scales

Study Selection of participants Confounding variables Measurement of exposure Blinding of outcome assessments Incomplete outcome data Selective outcome reporting Overall risk of bias
Bali et al. (2016) [33] unclear low low low low low low
Chatterjee et al. (2016) [19] low low low low low unclear low
Crispo et al. (2016) [34] unclear low low low low low low
Hsu et al. (2017) [20] unclear low low low low low low
Ishida et al. (2019) [35] unclear low low low unclear low medium
Kao et al. (2018) [36] low low low low unclear low low
Lu et al. (2015) [37] unclear low low low low low low
Machado-Duque et al. (2018) [38] low low low low low high low
Moga et al. (2013) [39] low low low low low low low
Sørensen et al. (2013) [40] low low low low low low low