Table 3. Univariate relative risk estimates of available risk factors for Creutzfeldt-Jakob disease, data from Colorado death certificates, 1979–2001*.

Covariate		RR (95% CI), N = 506,335, events = 65
Age at death		p = 0.029
	Units = 10 y	0.87 (0.78–0.99)
CWD county†		p = 0.61
	No	1.0
	Yes	0.83 (0.41–1.68)
Death year†		p = 0.54
	Units = 5 y	0.95 (0.79–0.13)
Sex		p = 0.90
	Male	1.0
	Female	0.97 (0.60–1.58)
ICD-10		p = 0.83
	No	1.0
	Yes	1.07 (0.56–2.05)
Marital status		p = 0.0094
	Widowed	1.0
	Divorced	0.80 (0.23–2.85)
	Married	2.86 (1.51–5.42)
	Single	2.19 (0.86–5.57)
	Unknown	–‡
Race		p = 0.94
	White	1.0
	Nonwhite	2.87 (0.40–20.6)

*RR, relative risk; CI, confidence interval; CWD, chronic wasting disease.
†Primary predictor .
‡Insufficient events.