Table 2 Logistic regression analyses for factors associated with cognitive impairment

Age ≥ 60 years

<  60 years

2.1

1.7–2.7

< 0.001

1.3

0.8–1.9

0.26

Female

Male

1.5

1.2–1.9

0.001

1.2

0.8–1.8

0.51

≤Primary Education

≥ Secondary Education

3.5

2.7–4.5

< 0.001

3.5

2.4–5.2

< 0.001

Single/Divorced/Widowed

Married

1.8

1.4–2.3

< 0.001

1.1

0.8–1.7

0.50

Unemployed/Retired

Self-employed/Employed

2.3

1.8–3.0

< 0.001

1.7

1.2–2.6

< 0.01

Rural

Urban

2.1

1.5–2.8

< 0.001

1.8

1.1–2.9

0.01

Current alcohol drinker

Non drinker

0.7

0.6–0.9

< 0.01

0.8

0.5–1.1

0.16

Inactive/underactive

Physically active

1.2

1.0–1.6

0.11

–

–

–

Socially inactive

Socially active

2.2

1.6–3.1

< 0.001

1.1

0.7–1.8

0.72

Vision/hearing impairment

No impairment

1.3

1.0–1.6

0.05

1.3

0.9–1.8

0.20

History of stroke

No stroke

1.5

1.0–2.3

0.05

1.2

0.6–2.2

0.60

insomnia

Regular sleep

1.6

1.3–2.0

< 0.001

1.2

0.9–1.8

0.25

Renal dysfunction

Normal renal functions

1.7

1.1–2.5

0.02

1.7

1.0–2.7

0.04

Diabetes mellitus

Diabetes-free

1.2

0.9–1.6

0.29

–

–

–

BMI ≥ 25

BMI < 25

0.7

0.5–0.9

< 0.01

0.8

0.5–1.2

0.76

Postural hypotension

No postural hypotension

1.6

1.1–2.5

0.02

1.0

0.5–1.9

0.98