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Table 2 Quality assessment of included studies using Newcastle-Ottawa scale adapted for cross-sectional studies

From: Epidemiology of self-medication in Ethiopia: a systematic review and meta-analysis of observational studies

Study ID Methodological quality (5) Comparability (2) Outcomes measures and analysis (3) Total (10)
Abay and Amelo 3 1 2 6
Abeje et al 4 1 2.5 7.5
Abrha et al. 2.5 1 2 5.5
Abula and Worku 2.5 1 1.5 5
Angamo and Wabe 3 1 2 6
Ararsa ad Bekele 3 1 2 6
Baye and Sada 3.5 1 1.5 6
Befkadu et al 2 1 2 5
Bekele et al., 2016 4 1 2 7
Bekele et al., 2018 4 1 3 8
Beyene et al. 2 1 2 5
Dilie et al. 4 1 1.5 6.5
Eticha et al 4 1 1.5 6.5
Gebeyehu et al 4 1 2.5 7.5
Gedif and Hahn, 2002 3 1 1.5 5.5
Gedif and Hahn, 2003 3.5 1 2 6.5
Gelayee 4 1 2.5 7.5
Gutema et al. 2.5 1 1.5 5
Hailemichael et al. 4 1 1.5 6.5
Jaleta et al. 3 1 2 6
Kassie et al 4.5 1.5 2.5 8.5
Mihrete 3 1 1 5
Mossa et al. 2.5 1 1.5 5
Sado et al. 4 1 3 8
Shafie et al. 4.5 1 3 8.5
Suleman et al. 3 1.5 2 6.5
Worku and G/mariam 2.5 1 2 5.5
  1. NB the numbers in parenthesis are maximum scores to be given per category