Table 2.

Association of perceived stress and other covariates with mild cognitive impairment (outcome) estimated by multivariable logistic regression among adults aged ≥50 years

Characteristic	Category	Model 1	Model 2	Model 3	Model 4	Model 5
Perceived stressa	Per unit increase	1.18*** [1.15,1.22]	1.17*** [1.14,1.21]	1.15*** [1.12,1.19]	1.15*** [1.12,1.19]	1.14*** [1.11,1.18]
Sex	Male vs. Female	0.89 [0.79,1.00]	0.98 [0.87,1.10]	0.94 [0.84,1.06]	0.94 [0.83,1.06]	0.97 [0.86,1.09]
Age (years)	Per unit increase	1.03*** [1.02,1.03]	1.02*** [1.02,1.03]	1.02*** [1.02,1.03]	1.02*** [1.02,1.03]	1.02*** [1.01,1.02]
Education (years)	Per unit increase		0.96*** [0.94,0.97]	0.98** [0.96,0.99]	0.98** [0.96,0.99]	0.98** [0.96,0.99]
Wealth	Poorest			1.00	1.00	1.00
	Poorer			0.99 [0.83,1.18]	0.99 [0.83,1.17]	0.97 [0.82,1.16]
	Middle			1.07 [0.89,1.30]	1.07 [0.89,1.30]	1.05 [0.87,1.27]
	Richer			0.74** [0.61,0.90]	0.74** [0.61,0.90]	0.74** [0.61,0.89]
	Richest			0.48*** [0.39,0.59]	0.48*** [0.39,0.59]	0.47*** [0.38,0.59]
Depression	Yes vs. No				1.04 [0.78,1.38]	0.89 [0.67,1.19]
No. of chronic conditions	Per unit increase					1.19*** [1.14,1.23]

Data are odds ratio [95% confidence interval].

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

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

^**p<0.01

^***p<0.001