Table 2

Odds ratios (ORs (95% CIs)) for risk of disability in activities of daily living among elderly people in Taiwan by longest held occupation in a lifetime

Longest held occupation in a lifetime		Controls n		Cases n	Crude estimates		Adjusted estimates
Longest held occupation in a lifetime		Controls n		Cases n	OR (95% CI)	p Value	OR^2-150 (95% CI)	p Value
Legislators, government administrators, business executives and managers^2-151	75	22	1.0		1.0
Professionals	19	5	0.9 (0.3 to 2.7)	0.85	0.8 (0.2 to 2.6)	0.65
Technicians and associate professionals	12	5	1.4 (0.5 to 4.5)	0.55	1.3 (0.4 to 4.3)	0.66
Clerks	30	10	1.1 (0.5 to 2.7)	0.77	1.3 (0.5 to 3.3)	0.55
Service workers and shop and market sales workers	19	9	1.6 (0.6 to 4.1)	0.31	1.5 (0.6 to 4.2)	0.42
Agricultural, animal husbandry, forestry and fishing workers	122	87	2.4 (1.4 to 4.2)	<0.01	1.9 (1.1 to 3.5)	0.04
Craft and related trades workers	146	77	1.8 (1.1 to 3.1)	0.04	1.9 (1.1 to 3.4)	0.04
Plant and machine operators and assemblers	10	6	2.0 (0.7 to 6.3)	0.21	3.0 (0.9 to 9.7)	0.06
Elementary occupations^2-152	85	37	1.5 (0.8 to 2.7)	0.21	1.5 (0.8 to 2.8)	0.26
Servicemen	29	7	0.8 (0.3 to 2.1)	0.69	0.9 (0.3 to 2.6)	0.91
Housekeepers	173	95	1.9 (1.1 to 3.2)	0.02	1.5 (0.8 to 2.8)	0.17
									Test for heterogeneity
									χ²=6.51, p=0.77
Total	720	360

↵2-150 Odds ratios were calculated from unconditional logistic regression models with adjustment for age, sex, education level, marital status, cigarette and alcohol consumption, exercise, comorbidity and duration of employment for longest held occupation in a lifetime.
↵2-151 Reference category.
↵2-152 Based on Taiwan's standard occupational classification system, the category of elementary occupations includes a total of 15 occupations including: sanitation workers, construction workers, assembly workers, meat packers and producers, telephone sales, domestic helpers and cleaning workers, business and public cleaning staff/personnel, doorkeepers, meter readers, street food vendors, street vendors (non-food products), shoes shining/car wash workers, caretakers, dry cleaning and launderers, messengers/package/luggage porters and delivers.