Table 4: Determinants of hospital charges.
(a)

Model 1Model 2
Unstd. Coefficients  Standard ErrorStd. coefficients  tPUnstd. Coefficients B Standard ErrorStd. coefficients  tP

Age (y)61.4811.490.02005.35140.00000
Elective admission1763.74424.920.01604.15080.00003
In-hospital death12044.561339.920.03178.98900.00000
Women−669.94351.65−0.0063−1.90520.05677
Length of stay ( )3613.1228.990.5026124.62880.000003412.8122.530.4535151.50090.00000
# Diagnoses−287.8261.42−0.0199−4.68630.00000
# Procedures7049.92118.250.280059.61810.000008824.3792.780.321595.11010.00000
Time (year)6169.46232.790.088826.50240.000005677.02137.730.109541.21990.00000
Median income847.15156.290.01775.42050.00000
ICrH2804.75931.440.01823.01120.00260
ICA aneurysm, unruptured1300.841135.070.00391.14600.25179
Acute ischemia530.73693.290.00260.76550.44397
Seizure−60.35414.97−0.0005−0.14540.88438
Headache1414.91636.160.00822.22410.02615
Angiography1372.53431.610.01243.18000.00147
Embolization29192.74534.780.208654.58880.0000029502.47473.730.170762.27730.00000
IVM surgery26550.75608.400.156443.64030.0000027449.01488.440.155356.19730.00000
Radiosurgery27182.371354.840.068220.06320.0000016798.461122.820.039714.96090.00000
Aneurysm clip27896.461678.190.057316.62300.0000017164.041341.840.033812.79140.00000
Ventilation12209.90933.970.051813.07310.00000
ICrH primary diagn.3325.461054.940.01873.15230.00162
Seizure primary diagnosis1473.41787.550.00681.87090.06137
Headache primary diagnosis921.681334.310.00250.69080.48972
Constant−26640.781063.46−25.05100.00000−17986.64416.53−43.18200.00000

(b)

Adjusted R squaredf1df2Sig. F ChangeDurbin-Watson

Model 10.664823316100.00000.3258
Model 20.61618562050.00000.3172

Abbreviations: Unstd.: unstandardized, Std.: standardized, #: number of, ICrH: intracranial hemorrhage, ICA: internal carotid artery, IVM: intracranial vascular malformation.