Table 1

Characteristics of study sample for uncomplicated vaginal deliveries (diagnosis-related group 775)

NPercent
Patient-level characteristics (n=76 766)
Age categories
 18–3460 17578.39
 35–6416 59121.61
Sex
 Male00.00
 Female76 766100.00
Private insurance type
 Managed Care-Knox Keene34 38744.79
 Managed care-other36 41447.44
Traditional coverage59657.77
Charlson comorbidity index
 075 18297.94
 115552.03
 2290.03
Length of stay
 Less than 3 days59 72477.80
 3–6 days16 82621.92
 Greater than 6 days2160.28
Hospital-level characteristics (n=198)
Ownership
 Government3216.16
 NFP12764.14
 FP3919.70
Location
 Urban17487.88
 Rural2412.12
Teaching status
 Yes2010.10
 No17889.90
NMeanSD
Casemix (severity)
 Low661.280.12
 Medium661.550.05
 High661.780.13
Capacity
 Licensed beds198280.45180.36
Payer mix
 % Medicare19837.7912.38
 % Medicaid19828.1315.68
Market-level characteristics
Wage index
 Low1211.190.00
 Medium121.220.01
 High651.480.14
Herfindahl-Hirschman Index
 Low671178629
 Medium703351721
 High6168311986
% Without insurance19818.313.77
% Below poverty line19813.804.41
  • FP, for profit; NFP, not for profit.