Table 3.

Incidence rates and hazard ratios of vancomycin compared to all comparators stratified for antibiotic treatment duration.

	N	Cases	Person timeb	Incidence rateb	95% CI	Crude HR	95% CI	Adjusted HRc	95% CI
< 7 days of treatment
Vancomycina	4347	8	18.25	0.44	0.22–0.88
Comparators	23,965	72	100.67	0.72	0.57–0.90	0.61	0.30–1.27	0.49	0.22–1.08
7 to 14 days of treatment
Vancomycina	871	9	3.64	2.47	1.28–4.75
Comparators	2845	23	11.88	1,94	1.29–2.91	1.28	0.59–2.76	0.89	0.37–2.12
> 14 days of treatment
Vancomycina	231	5	0.96	5.19	2.16–12.48
Comparators	738	12	3.08	3.89	2.21–6.86	1.34	0.47–3.79	0.89	0.26–3.10

95% CI 95% confidence interval, HR hazard ratio.

^aIndex group.

^bPer 10 person-years.

^cAdjusted for age, gender, medical history, co-medication, type of surgery, main diagnosis;