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Table 2 Predictors of primary cesarean delivery determined from the data of the development cohort

From: Risk score for predicting primary cesarean delivery in women with gestational diabetes mellitus

Predictor Crude OR (95% CI) Adjusted ORa (95% CI) Coefficient Pointsb
Parity
 Multiparity 1.00 1.00 Reference 0
 Nulliparity 4.12 (2.27–7.47) 4.62 (2.91–7.36) 1.531 3
Gestational weight gain
 Within/below IOM recommendations 1.00 1.00 Reference 0
 Above IOM recommendations 1.95 (1.23–3.06) 1.73 (1.06–2.81) 0.547 1
Insulin use
 No 1.00 1.00 Reference 0
 Yes 1.87 (1.01–3.47) 2.46 (1.25–4.84) 0.899 2
  1. CI Confidence interval, OR Odds ratio, IOM Institute of Medicine
  2. aAdjusted for the other variables in the table. bA point was allocated to each variable according to its coefficient value. Each coefficient was divided by 0.547 (the lowest coefficient among the significant predictors, corresponding to gestational weight gain above recommendations) and rounded to the nearest integer