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Table 2 Risk of Bias in Methodological qualities of identified articles

From: Measurement properties of comorbidity indices in maternal health research: a systematic review

Study Study Participation Study Attrition Prognostic Factor Measurement Outcome Measurement Confounding Measurement and Account Analysis
Bateman et al. [27] Low NA Low Low Moderate Low
Metcalfe et al. [28] Low NA Low Moderate Moderate Low
  1. NA Not Applicable