Table 3.

Association of perceived stress and other covariates with mild cognitive impairment (outcome) by age groups estimated by multivariable logistic regression

Characteristic	Category	50–64 years		≥65 years
Perceived stressa	Per unit increase	1.14***	[1.10,1.18]	1.14***	[1.10,1.19]
Sex	Male vs. Female	0.85*	[0.73,0.98]	1.13	[0.94,1.36]
Age (years)	Per unit increase	1.02	[1.00,1.04]	1.05***	[1.04,1.06]
Education (years)	Per unit increase	0.97**	[0.95,0.99]	0.98	[0.96,1.01]
Wealth	Poorest	1.00		1.00
	Poorer	0.95	[0.76,1.19]	0.94	[0.72,1.22]
	Middle	0.94	[0.75,1.18]	1.12	[0.84,1.49]
	Richer	0.74*	[0.57,0.95]	0.64***	[0.50,0.81]
	Richest	0.39***	[0.30,0.52]	0.55***	[0.40,0.76]
Depression	Yes vs. No	0.88	[0.61,1.26]	0.88	[0.58,1.34]
No. of chronic conditions	Per unit increase	1.23***	[1.17,1.31]	1.16***	[1.10,1.23]

Data are odds ratio [95% confidence interval].

Models are mutually adjusted for all variables in the Table and country.

^aPerceived stress was based on a scale ranging from 0–10 with higher scores corresponding to higher levels of stress.

^*p<0.05

^**p<0.01

^***p<0.001