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Table 3 Literature review scoring and categorization of the overall quality of writing and risk of bias

From: The effect of household storage tanks/vessels and user practices on the quality of water: a systematic review of literature

Author (Year) Quality of reporting Minimizing risk of bias Appropriateness of conclusion Overall score Overall risk of bias
Clarity of objectives Context Data collection Analysis Appropriateness of sampling External peer review Interpretations Limitations Conclusions
Ziadat (2005) 2 2 2 1 2 1 0 0 2 12 Moderate
Schafer (2010) 2 2 2 2 2 0 2 1 2 15 Low
Al-Bahrya et al. (2013) 2 2 2 2 2 2 1 0 1 14 Moderate
Graham and VanDerslice (2007) 2 2 2 2 2 2 2 0 2 16 Low
Al-Ghanim et al. (2014) 2 1 2 2 2 1 2 0 2 14 Moderate
Akuffo et al. (2013) 2 2 2 2 2 1 2 0 2 15 Low
Chalchisa et al. (2017) 2 1 1 1 1 1 2 0 1 10 High
Chia et al. (2013) 2 2 2 2 2 1 2 0 2 15 Low
Duru et al. (2013) 2 1 2 2 1 1 2 1 2 14 Moderate
Schafer et al. (2012) 2 2 2 2 2 0 2 1 2 15 Low
Packiyam et al. (2016) 1 1 2 2 1 1 2 1 2 13 Moderate
Mohanan et al. (2017) 2 2 1 1 2 2 2 0 2 14 Moderate
Ogbozige et al. (2018) 2 1 1 2 2 2 2 0 2 14 Moderate
Douhri et al. (2015) 2 2 1 2 2 2 2 0 2 15 Low
Khan & AlMadani (2016) 2 2 2 1 2 2 2 0 2 15 Low
Agensi et al. (2019) 2 2 2 2 2 2 2 0 2 16 Low
Nnaji et al. (2019) 2 2 1 2 1 2 2 0 2 14 Moderate
Holt (2005)* 2 2 2 1 2 0 2 2 2 15 Low
Pesewu et al. (2014) 2 2 2 2 2 2 2 0 2 16 Low
Levesque (2008) 2 2 2 2 2 2 2 0 2 16 Low
Rodrigo et al. (2010) 2 2 2 2 2 2 2 0 2 16 Low
Varghese and Jaya (2008) 2 1 2 2 2 2 2 0 2 15 Low
Nunes et al. 2018 2 2 2 1 2 2 2 0 2 15 Low
Jagals et al. 2003 2 2 2 2 2 2 2 0 2 16 Low
  1. Low risk of bias 15–17; Moderate risk of bias 12–15; High risk of bias: _\(\le\)11