Table 3. Multivariable logistic regression results showing the association between childhood SES and dementia risk outcome, adjusted for covariates.

	Model 1 OR (95% CI)	Model 2 OR (95% CI)	Model 3 OR (95% CI)
Clusters
Non-poor SES	Reference	Reference	Reference
Poor SES	2.53 (2.14 to 2.98)	1.39 (1.15 to 1.69)	1.39 (1.15 to 1.68)
Age (years)	1.05 (1.05 to 1.06)	1.05 (1.04 to 1.05)	1.05 (1.04 to 1.06)
Sex
Female	0.81 (0.73 to 0.90)	1.03 (0.91 to 1.16)	0.95 (0.81 to 1.13)
Male	Reference	Reference	Reference
Employed
Yes		Reference	Reference
No		1.03 (0.91 to 1.17)	1.04 (0.92 to 1.18)
Marital status
Single		1.44 (0.82 to 2.53)	1.44 (0.82 to 2.53)
Married		0.95 (0.82 to 1.10)	0.96 (0.83 to 1.11)
Separated		1.14 (0.84 to 1.55)	1.12 (0.82 to 1.52)
Widower		Reference	Reference
Education
Primary and lower		6.05 (4.65 to 7.88)	5.64 (4.32 to 7.37)
Secondary		2.06 (1.57 to 2.70)	1.96 (1.50 to 2.58)
College and above		Reference	Reference
Wealth quintile
Poorest		1.50 (1.26 to 1.78)	1.48 (1.25 to 1.77)
Poor		1.48 (1.24 to 1.77)	1.47 (1.23 to 1.75)
Average		1.16 (0.97 to 1.38)	1.16 (0.97 to 1.38)
Rich		1.14 (0.96 to 1.35)	1.14 (0.96 to 1.36)
Richest		Reference	Reference
Social capital		0.95 (0.92 to 0.98)	0.95 (0.92 to 0.98)
Smoking
Smoker			1.12 (0.95 to 1.31)
Past smoker			1.07 (0.86 to 1.34)
Non-smoker			Reference
Chronic diseases			0.95 (0.87 to 1.03)
Depression			1.03 (1.02 to 1.04)

SES, socioeconomic status.