TABLE 2.

Antibiotics usage and the risk of dementia by using Fine and Gray’s competing risk model.

	Competing risk in the model
Variables	Adjusted SHR	95% CI	95% CI	P
Leptospirosis infections (reference: without)	1.357	1.213	1.519	<0.001
Severe infections	1.400	1.257	1.598	<0.001
Non-severe infections	1.326	1.202	1.483	<0.001
CCI_R = 1 (reference: CCI_R = 0)	3.098	1.124	8.012	0.003
CCI_R = 2 (reference: CCI_R = 0)	4.501	1.188	14.562	0.001
Winter (reference: spring)	6.532	1.397	33.012	0.001

P: Chi-square/Fisher exact test on category variables and t-test on continue variables; SHR, sub-distribution hazard ratio; CI, confidence interval; Adjusted SHR, Adjusted variables listed in Table 1; CCI_R, Charlson Comorbidity Index, dementia removed.