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Table 3 Risk of Bias Assessment of Included Studies Using the Hoy 2012 Tool

From: Epidemiology and demographics of juvenile idiopathic arthritis in Africa and Middle East

Sr. No. Reference 1.Representation 2.Sampling 3.Random Selection 4.Non-response bias 5.Data Collection 6.Case Definition 7.Reliability Tool 8.Method of data collection 9.Prevalence Period 10.Numerators and Denominators Summary Assessment
1. Khuffash et al., 1988 [13] High Low Low Unclear Low High Low Low Low Low Moderate
2. Khuffash et al., 1990 [14] High Low Low Unclear Low High Low Low Low Low Moderate
3. Abdwani et al., 2015 [11] High Low Low Unclear Low Low Low Low Low Low Low
4. Ozen et al., 1998 [15] Low Low Low Unclear Low Low Unclear Low Low Low Low
5. El-Soud et al., 2013 [12] Low Low High Unclear Low Low Low Low Low Low Low
6. Singwe-Ngandeu et al., 2013 [16] High Low Low Unclear High Unclear Low Low Unclear High High
7. Tayel et al., 1999 [17] Unclear Low Low Low Low Low Low Low Unclear Low Low