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Table 1 Risk of bias/quality assessment of included studies using the Hoy 2012 tool

From: Breast self-examination practice among women in Africa: a systematic review and Meta-analysis

Study Representation Sampling Random selection Non response bias Data collection Case Definition Reliability and validity of study tool Method of data collection Prevalence period Numerator and denominator Risk of Bias
Birhane et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Obaji et al. Low risk High risk High risk Low risk Low risk High risk Low risk Low risk Low risk Low risk Moderate risk
Onwere et al. High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Abay et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Minasie A et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Abdel Fattah, M et al. High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Abeje et al. High risk Low risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Birhane K et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Carlson-Babila Sama et al. High risk Low risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Kasahun AF Low risk Low risk Low risk Low risk Low risk Low risk High risk Low risk Low risk Low risk Low risk
Dagne AH et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Dadzi R, Adam A Low risk Low risk High risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Gwarzo, UMD et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Isara, A. R. and Ojedokun, C. I Low risk Low risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Segni, MT et al High risk Low risk Low risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk
Azage M. et al Low risk Low risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Elshamy, Karima F et al High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Akhigbe, A. O. et al High risk Low risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Nde et al. High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Negeri et al. Low risk Low risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Odusanya et al Low risk Low risk Low risk Low risk Low risk Unclear High risk Low risk Low risk Low risk Low risk
Ogunbode A M High risk High risk High risk Low risk Low risk Unclear High risk Low risk Low risk Low risk High risk
Ossai EN et al. High risk Low risk Low risk Low risk Low risk Unclear High risk Low risk Low risk Low risk Moderate risk
Feleke D. et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Kayode F.O. et al. High risk High risk High risk Low risk Low risk Unclear Unclear Low risk Low risk Low risk High risk
Okobia, Michael N et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Getu et al. High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Shallo et al. High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Suh et al Low risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Ifediora, C. O., & Azuike, E. C. High risk Low risk High risk High Risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Ameer, K et al High risk High risk High risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Moderate risk
Agboola AOJ et al High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Amoran, O. E. and Toyobo, O. O Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Godfrey, Katende et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Bayumi E High risk High risk High risk Low risk Low risk Low risk Unclear Low risk Low risk Low risk High risk
Bellgam H.I. amd Buowari Y. D Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Boulos, Dina NK and Ghali, Ramy R High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
E. Kudzawuet al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Fondjo LA et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Idris SA et al High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Unclear Low risk High risk
Kifle MM et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Morse EP et al Low risk Low risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Ndikubwimana J et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Obaikol R et al High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Ramathuba, Dorah U et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Ramson, Lombe Mumba Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Florence, Adeyemo O et al Low risk Low risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Yakubu AA et al Low risk Low risk High risk Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk
Andegiorgishet al. Low risk Low risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Kimani, SM and Muthumbi, E High risk High risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Moderate risk
Agbonifoh, Julia Adesua Low risk Low risk High risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Casmir, Ebirim Chikere Ifeanyi et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Joel Olayiwola Faronbi Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Makanjuola, OJ et al Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Olowokere et al. Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk
Sambo, MN et al Low risk Low risk Unclear Low risk Low risk Low risk Low risk Low risk Low risk Low risk Low risk