Table 2.

Results of simple logistic regression models used to evaluate suitability of potential independent variables for multivariable regression modeling; includes full study cohort.

Patient demographics and characteristics (n=222 patients)	Odds Ratio for probability of > 365 days from injury to surgery (95% confidence interval)
Age (years divided by 10)	1.15 (0.97,1.37)
Sex (female)	2.00 (1.11,3.59)
Race (white)	1.30 (0.71,2.40)
Payer (at initial injury)
Medicaid	1.32 (0.47,3.73)
Medicare	1.35 (0.63,2.93)
Private (commercial)	0.63 (0.35,1.13)
Payer (at time of brachial plexus surgery)
Medicaid	0.99 (0.41,2.40)
Medicare	1.91 (0.95,3.85)
Private (commercial)	0.58 (0.32,1.04)
Hospital characteristics (n=222 patients)
Injury hospital
Location (urban)	0.47 (0.21,1.07)
Teaching status (teaching)	0.32 (0.17,0.59)
Bed size*
<= 200 beds	5.80 (2.52,13.36)
201–400 beds	4.27 (1.72,10.43)
401–600 beds	1.55 (0.56,4.30)
BPI surgery hospital
Location (urban)	0.25 (0.10,0.64)
Teaching status (teaching)	0.29 (0.15,0.57)
Bed size*
<= 200 beds	1.88 (0.85,4.15)
201–400 beds	1.10 (0.50,2.43)
401–600 beds	2.04 (0.70,6.01)

^*Comparison group is > 600 beds