Table 4. Epidemiological factors associated with seropositivity to Spotted fever group (SFG) rickettsiosis in Bhutan.

Variables	COR	95% CI		p value	AOR	95% CI		p value
Age group (years)
13–25	Ref.
26–40	1.95	1.02	3.73	0.043*	1.68	0.81	3.48	0.159
41–55	2.63	1.35	5.12	0.004*	2.16	1.04	4.48	0.040*
> 55	3.19	1.64	6.23	0.001*	2.87	1.35	6.09	0.006*
Districts
Chukha	Ref.
Mongar	0.37	0.18	0.77	0.007*	0.46	0.19	1.14	0.094
Punakha	0.54	0.28	1.06	0.072	0.53	0.22	1.24	0.141
Samtse	0.70	0.37	1.31	0.263	0.7	0.34	1.47	0.348
Thimphu	0.22	0.09	0.50	<.001*	1.78	0.16	19.28	0.634
Trashigang	0.54	0.28	1.06	0.072	0.68	0.29	1.61	0.386
Trongsa	0.41	0.20	0.82	0.012*	0.62	0.25	1.54	0.301
Zhemgang	0.41	0.20	0.82	0.012*	0.34	0.15	0.77	0.010*
Altitude
Low	Ref.
Medium	0.66	0.42	1.03	0.067	0.82	0.43	1.59	0.564
High	0.23	0.11	0.51	<0.001*	0.11	0.01	1.07	0.058

COR, crude odds ratio; AOR, adjusted odds ration;

*p<0.05