TABLE 2

Covariates in Mixed Effects Logistic Regression Model for Receipt of ARS

CharacteristicOR95% CIP
Male sex0.94(0.88–1.00).85
Mean age at index admission, d1.04(0.93–1.16).89
White race1.01(0.94–1.09).58
Government payer1.21(1.12–1.30)<.001
Census region.08
 SouthReference
 West0.28(0.05–1.66)
 Northeast0.25(0.04–1.53)
 Midwest0.23(0.04–1.33)
Admission status
 ED admission0.47(0.43–0.52)<.001
 ICU admission1.26(1.14–1.39).01
 Transfer from another facility1.57(1.45–1.70)<.001
Comorbidities
 Mechanical ventilation4.57(4.15–5.02)<.001
 Infection1.15(1.06–1.24)<.001
 Cardiovascular disease1.78(1.64–1.93)<.001
 Hematologic and/or immunologic disease1.43(1.23–1.67).07
 Neuromuscular disorder2.73(2.49–3.00)<.001
 Congenital or genetic defect2.32(2.14–2.51)<.001
 Respiratory disease2.20(2.03–2.38)<.001
Any diagnostic test performed6.24(5.66–6.88)<.001
Facility-level diagnostic test usage (quintiles)
 1Reference.44
 21.23(0.55–2.75)
 30.77(0.36–1.63)
 40.61(0.28–1.34)
 50.66(0.30–1.47)
Facility-level laparoscopy usage1.57(1.21–2.02)<.001
  • Coefficient estimates and CIs are based on simulations from posterior distributions (n = 500) by using the Gelman simulation technique.10 —, not applicable.