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Table 4 Multiple linear regression on the inverse of the overall cost (N = 1,026).

From: Descriptive analysis of childbirth healthcare costs in an area with high levels of immigration in Spain

  Incremental cost (€)  
  Estimate (€) 95% Confidence Interval (€) Variation (%)** p
Reference case* 2,992.12 [2,880.77; 3,112.42]   <0.001
Age (per 1 year increase over 15) 5.09 [-0.40; 11.49] 0.17 0.071
Origin     
   Spanish-born mother Reference    
   Foreign-born mother -72.02 [-123.85; -8.61] -2.41 0,028
Prenatal care     
   Yes Reference    
   No -189.70 [-238.16; -129.62] -6.34 <0.001
Delivery type     
   Vaginal non-instrumented Reference    
   Vaginal instrumented 192.80 [81.04; 331.96] 6.44 <0.001
   Cesarean section 954.47 [753.80; 1,204.79] 31.90 <0.001
Maternal severity     
   Mild Reference    
   Moderate 241.28 [148.43; 354.69] 8.06 <0.001
   Severe 597.24 [293.34; 1,017.17] 19.96 <0.001
Neonatal severity     
   Non-admitted Reference    
   Mild 419.50 [302.95; 562.24] 14.02 <0.001
   Moderate 659.40 [435.67; 949.49] 22.04 <0.001
   Severe 1,951.41 [1,146.41; 3,287.30] 65.22 <0.001
Multiple birth     
   Single Reference    
   Multiple 701.34 [375.43; 1,153.94] 23.44 <0.001
  1. The table shows the incremental cost attributable to the variables included in the model with an explained variance of 45.5%.
  2. *: Vaginal non-instrumented delivery of a 15-year old Spanish-born woman with prenatal and mild severity, delivering a singleton not admitted to hospital. **: Variation (%) with respect to the reference case.