Table 1—

Characteristics of study population by intervention status

CharacteristicPatients treated in intervention units
Patients treated in comparison units
Preintervention periodPostintervention periodP value for differencePreintervention periodPostintervention periodP value for difference
n2,1671,0582,4061,088
Age (years)61.2 ± 17.061.1 ± 17.60.8554.7 ± 17.354.1 ± 17.40.29
Female sex38.439.40.5943.842.10.34
Latino ethnicity13.711.20.0621.122.10.49
Race
    Caucasian82.479.90.0879.879.90.94
    African American6.57.80.167.57.00.60
    Asian7.78.30.558.98.40.61
    Other3.43.70.693.84.10.62
Insurance
    Contract/capitated41.843.40.3953.551.80.35
    Medicare46.245.00.5229.326.80.13
    Medi-Cal7.37.70.678.310.60.03
    Other4.73.90.318.810.70.07
Complications at admission4.74.00.374.12.30.01
Medical illness severity score3.17 ± 0.863.24 ± 0.840.073.12 ± 0.983.14 ± 0.940.63
  • Data are means ± SD or %.