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Table 1 Measurement properties of included indices

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

Study Year Design n Comorbidity Index Outcome C-statistic (95% CI)
Bateman et al. [27] 2013 Retrospective Cohort 854,823 The maternal comorbidity index Organ injury or death 0.657
(0.647–0.666)
     The Charlson comorbidity index Organ injury or death 0.578
(0.570–0.585)
     The Elixhauser comorbidity Index Organ injury or death 0.586
(0.575–0.597)
Metcalfe et al. [28] 2015 Retrospective Cohort 5995 The maternal comorbidity index Organ injury 0.67
(0.58–0.76)
  1. CI Confidence Interval