Table 3

Regression of adjusted charges on hospital and market characteristics for uncomplicated vaginal deliveries

Multiplicative increase for each unit change in predictor95% CI lower bound95% CI upper boundp Value
Hospital-level characteristics
Ownership
 Government−0.096−0.2490.0570.217
 NFPReference
 FP0.1980.04750.3480.010
Teaching status
 Yes−0.049−0.3170.220.719
 NoReference
Location
 UrbanReference
 Rural0.022−0.1440.190.849
Casemix (severity)
 LowReference
 Medium0.104−0.0440.2520.166
 High0.1960.0440.3490.012
Capacity
 Licensed beds0.0003−0.00010.00070.234
Payer mix
 Proportion medicare0.263−0.3520.8780.400
 Proportion Medicaid−0.002−0.4420.4370.992
Quality indicators
 Caesarean delivery rate−0.097−2.4072.2120.934
 Vaginal birth after caesarean rate (uncomplicated)0.415−0.5281.3570.386
 Primary caesarean delivery rate0.208−2.322.7370.871
Market-level characteristics
Wage index
 LowReference
 Medium0.2020.02760.3760.023
 High0.4090.2710.547<0.001
Herfindahl-Hirschman Index (system-wide)
 LowReference
 Medium0.012−0.1160.1390.857
 High0.005−0.140.1490.951
% Without insurance−0.012−0.0330.0090.259
% Below poverty line0.013−0.0050.0320.153