Table 4

Regression of adjusted charges on hospital and market characteristics for uncomplicated caesarean sections

Multiplicative increase for each unit change in predictor95% CI lower bound95% CI upper boundp Value
Hospital-level characteristics
Ownership
 Government−0.146−0.2980.0060.060
 NFPReference
 FP0.1720.0320.3120.016
Teaching status
 Yes0.062−0.1870.3110.626
 NoReference
Location
 UrbanReference
 Rural0.088−0.0810.2570.304
Casemix (severity)
 LowReference
 Medium0.087−0.0520.2250.218
 High0.123−0.0190.2650.088
Capacity
 Licensed beds−0.0002−0.00060.00020.363
Payer mix
 Proportion Medicare0.491−0.0040.9860.052
 Proportion Medicaid0.112−0.3540.5780.636
Quality indicators
 Caesarean delivery rate0.491−1.6592.6420.653
 Vaginal birth after caesarean rate (uncomplicated)0.508−0.3151.3320.225
 Primary caesarean delivery rate−1.192−2.652.2620.877
Market-level characteristics
Wage index
 LowReference
 Medium0.2580.0670.4490.008
 High0.3780.260.497<0.001
Herfindahl-Hirschman Index (system-wide)
 LowReference
 Medium−0.079−0.1960.0370.183
 High0.012−0.1160.140.855
% Without insurance−0.0003−0.020.0190.025
% Below poverty line−0.002−0.0190.0150.813