Table 5.

Comparison of antibiotic use pre- and post-clinical practice guidelines.

	OR	95% confidence interval	p
Antibiotic use (post-CPG vs pre-CPG)	0.23	0.09, 0.62	0.003*
Variables affecting antibiotic use
Gestational age (premature vs. full term)	1.10	0.26, 4.62	0.901
White blood cell count ≥15,000 v vs <15,000)	4.23	1.62, 11.05	0.003*
Gender (female vs male)	1.39	0.54, 3.58	0.497
Chest radiograph finding (consolidation vs no consolidation)	3.67	0.49, 27.55	0.207
Chest radiograph finding (atelectasis vs no atelectasis)	1.68	0.58, 4.88	0.337
Secondary bacterial diagnosis	248.21	28.85, 2135.65	0.000*

Logistic regression analysis for variables could have affected antibiotic use in both groups of patients pre- and post-CPG; CPG, clinical practice guidelines; #number is equal in both groups

*statistically significant at p<0.05.