| | Study | Sample representativeness | Sample size | Response rate | Ascertainment of dental caries | Descriptive statistics | Total |
| | Al-tamimi, S., 1998 | | | | | Didn’t mention confidence intervals or p-value | 4 | | Bhayat, A., 2014 | Only boys | | | | | 3 | | Mahrous, M. S., 2016 | | | | | | 5 | | Abolfotouh, M. A., 2000 | Only boys | | | | | 5 | | Alkhunaizi, Y. M., 2018 | Only female | | | | Didn’t mention confidence intervals or p-value | 3 | | Farooqi, F. A., 2015 | | Didn’t justify the sample size | | | | 3 | | Khan, N. B., 2001 | | | | | | 3 | | Alamoudi, N., 1996 | | | Didn’t mention the number of consent form | | | 3 | | Qutob, A. 2009 | | | | | | 5 | | Gandeh, M. B. S., 2000 | | | | | | 3 | | Alkarimi, H. A., 2014 | | Didn’t justify the sample size | | | | 3 | | Al-rafee, M. A., 2019 | | | | | | 5 | | Aldosari, A. M., 2004 | | | | | | 3 | | Alamri, A. A., 2017 | Only boys | | | | | 4 | | Alshiha, S. A., 2017 | Only female | | | | | 5 | | Alhabdan, Y. A., 2018 | Only boys | | | | | 4 | | Paul, T. R. 2003 | | | | | | 2 | | Al-Shammery, A. R., 1999 | | | | | | 5 |
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