Table 1.

Results of logistic regression analysis for adjusting the effect of intervention for potential confounding variables. The regression coefficient and odds ratio for the “baseline” value of each variable is reported as “N/A”.

Variable	Values	Coefficient	Odds ratio (95% CI)
Study period	After	−0.333	0.72 (0.64 – 0.70)
	Before	N/A
Patient sex	Male	−0.0121	0.99 (0.89 – 1.10)
	Female	N/A
Patient race	Black	0.137	1.15 (0.71 – 1.84)
	Hispanic	0.214	1.24 (0.69 – 2.21)
	White	0.155	1.17 (0.74 – 1.85)
	Other	0.198	1.22 (0.77 – 1.93)
	Unknown	−0.003	1.00 (0.99 – 1.01)
	Asian	N/A
Provider role	Resident	−0.003	0.99 (0.89 – 1.12)
	Physician Assistant	0.038	1.04 (0.87 – 1.24)
	Other	0.024	1.02 ( 0.75 – 1.39)
	Attending	N/A
Time of order	Night shift	−0.006	0.99 (0.89 – 1.10)
	Day shift	N/A
Intercept		−8.369	N/A