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Table 3 Univariate and multivariable odds ratios for selected candidate predictor variables pooled from 10 imputed datasets

From: Development and internal validation of the multivariable CIPHER (Collaborative Integrated Pregnancy High-dependency Estimate of Risk) clinical risk prediction model

Patient characteristics multivariate analysis Univariate OR (95% CI) Multivariate OR (95% CI)
Maternal age, years 0.95 (0.92–0.98) 0.95 (0.92–0.99)
Surgery in preceding 24 h, yes 0.47 (0.32–0.70) 0.46 (0.29–0.73)
Highest systolic blood pressure, mm Hg 0.99 (0.98–1.02) 0.99 (0.98–1.00)
Lowest Glasgow Coma Scale score 0.85 (0.82–0.89) 0.87 (0.83–0.91)
Lowest ABG pH 0.60 (0.28–1.29) 0.57 (0.22–1.44)
Highest aPTT 1.02 (1.02–1.03) 1.02 (1.01–1.03)
Highest serum potassium 0.90 (0.72–1.12) 0.73 (0.56–0.94)
Highest serum sodium 1.07 (1.04–1.10) 1.03 (1.00–1.08)
Highest creatinine, per 10 unit change 1.05 (1.03–1.07) 1.04 (1.03–1.07)
Highest bilirubin, per 10 unit change 1.10 (1.07–1.14) 1.05 (1.01–1.09)
  1. Abbreviations: ABG arterial blood gas, aPTT activated partial thromboplastin time, CI confidence interval, OR odds ratio