Volume 7, Number 1—February 2001
Preoperative Drug Dispensing as Predictor of Surgical Site Infection1
|Variable||(n=191)||(n=372)||p value||ORc (95% CI)||p value||OR (95% CI)|
|Chronic disease score >5,000 (%)||55 (28.8)||60 (16.1)||< 0.001||2.6 (1.6-4.2)||0.001||2.6 (1.5-4.7)|
|ASA >3 (%)||67(35.1)d||79 (21.2)e||< 0.001||3.1 (1.7-5.5)||0.03||2.0 (1.1-3.7)|
aUnadjusted values are controlled for age, sex, and procedure duration because of the matching process used to select uninfected subjects.
bAdjusted for chronic disease score 5,000, ASA 3, type of anesthesia, emergent nature of the procedure, procedure duration (ordinal), and wound class.
dThirty (15.7%) cases had missing ASA scores.
eEighty-two (21.7%) controls had missing ASA scores.
1This study was presented in part at the Society for Healthcare Epidemiology of America annual meeting, San Francisco, California, April 1999, and at the 4th Decennial International Conference on Nosocomial and Health Care-Associated Infections, Atlanta, Georgia, March 2000.