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

Table 2 Risk of Bias in Methodological qualities of identified articles

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

ISSN: 1471-2393