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Table 1 Impact of the QUARISMA intervention on caesarean sections and total direct medical costsa, b

From: A cluster-randomized trial to reduce caesarean delivery rates in Quebec: cost-effectiveness analysis

  Model 1: BMLM (crude) Model 2: BMLM (adjusted)
Coef. (ß) Std. Err. 95% CI P value Coef. (ß) Std. Err. 95% CI P value
All participantsc (N = 105,351 patients; 32 hospitals)c
 Effects (CS) −0.009 0.005 (−0.019 to 0.002) 0.096 −0.005 0.005 (−0.015 to 0.004) 0.288
 Costs ($) −185 50 (−283 to −86) <0.001 −180 49 (−277 to −83) <0.001
Low-risk subgroupd (N = 49,281 patients; 32 hospitals)
 Effects (CS) −0.013 0.005 (−0.023 to −0.003) 0.013 −0.014 0.005 (−0.024 to −0.004) 0.005
 Costs ($) −210 63 (−334 to −87) 0.001 −226 62 (−348 to −105) <0.001
High-risk subgroupd (N = 56,070 patients; 32 hospitals)
 Effects (CS) 0.009 0.008 (−0.007 to 0.024) 0.291 0.008 0.008 (−0.008 to 0.024) 0.307
 Costs ($) −102 76 (−250 to 47) 0.180 −97 75 (−243 to 49) 0.193
  1. BMLM bivariate multilevel linear model, CS caesarean section
  2. aAll costs given in 2013 Canadian dollars = (0.94 USD) [30]
  3. bTotal costs calculated using CIHI National Physician Database 2011–2012 physician fees for the Province of Quebec [13]
  4. cAdjusted models for all participants included the following covariates: parity, smoking, birth weight, hospital type, and women’s risk level
  5. dAdjusted subgroup models included the following covariates: parity, smoking, birth weight, and hospital type