Table 3

Risk of dementia according to the occupational category. Cox model with delayed entry. PAQUID 1988–97

Dementia		Model 1^3-151				Model 2^3-151			Model 3^3-151		Model 4^3-151
Dementia		RR	95% CI			RR	95% CI		RR	95% CI	RR	95% CI
Occupational category:
Professionals/managerials and other employees	1	—		1	—		1	—	1	—
Housewives/inactives	1.17	0.80–1.72		1.05	0.71–1.56		1.04	0.70–1.53	0.99	0.67–1.47
Farmers	1.67^3-160	1.23–2.27		1.23	0.88–1.72		1.23	0.88–1.72	1.08	0.75–1.56
Domestic service employees	1.16	0.77–1.74		0.86	0.56–1.32		0.86	0.56–1.32	0.79	0.51–1.23
Blue collar workers	1.51^3-150	1.10–2.07		1.19	0.85–1.66		1.19	0.85–1.67	1.15	0.82–1.61
Craftsmen/shopkeepers	1.07	0.75–1.53		1.00	0.70–1.42		1.00	0.70–1.42	0.93	0.64–1.34
Log likelihood ratio statistics^3-152	p=0.016			p=0.538			p=0.541		p=0.602

↵3-151 Model 1=sex, interaction age-sex; model 2=sex, interaction age-sex, education; model 3=sex, interaction age-sex, education, tobacco and wine consumption; model 4=sex, interaction age-sex, education, tobacco and wine consumption, income, vascular factors.
↵3-152 Testing the global effect of occupation.
↵3-150 p<0.05,
↵3-160 p<0.01.