TABLE 3.

Final multivariable logistic regression model for factors predictive of clinical success^a

Independent variable	Estimate	Odds ratio (95% CI)	P
Intercept	−9.831		<0.001
Wt, <94 kgb	1.849	6.35 (1.25, 32.4)	0.026
Absence of P. aeruginosac in baseline cultures	2.317	10.1 (1.43, 72.0)	0.021
APACHE II score, <13d	2.390	10.9 (1.28, 93.3)	0.029
Non-Hispanic racee	2.503	12.2 (2.12, 70.6)	0.005
Diagnosis of complicated appendicitis or cholecystitisf	2.545	12.7 (2.27, 71.5)	0.004
AUC/MIC ratio, ≥3.1g	3.497	33.0 (3.27, 333)	0.003

^aMcFadden's ρ² = 0.416.

^bThe reference group included patients weighing ≥ 94 kg (n = 19).

^cThe reference group included patients with P. aeruginosa in baseline cultures (n = 10).

^dThe reference group included patients with APACHE II scores ≥ 13 (n = 6).

^eThe reference group included patients of Hispanic race (n = 25).

^fThe reference group included diagnoses of peritonitis due to perforation of the small/large intestine; intra-abdominal, hepatic, or splenic abscess; or other (n = 37).

^gThe reference group included patients with AUC/MIC ratios of <3.1 (n = 6).