Table 3 Odds ratios for olfactory identification score and other confounders among participants with mild cognitive impairment vs. cognitive normal

OI (score, decreasing)

1.18(1.11,1.25)

<0.0001

1.19(1.11,1.27)

<0.0001

Age (increasing)

1.05(1.03, 1.07)

<0.0001

1.05(1.03, 1.07)

<0.0001

Gender (female vs. male)

0.77(0.60, 1.00)

0.053

0.85(0.63, 1.15)

0.284

Education year (increasing)

0.88(0.86, 0.91)

<0.0001

0.88(0.85, 0.91)

<0.0001

Living alone

1.00(0.63, 1.59)

0.995

Cigarette smoking

1.57(0.99, 2.47)

0.053

Alcohol drinking

0.77(0.46, 1.28)

0.309

Heart disease

0.87(0.57, 1.32)

0.506

Hypertension

0.98(0.75, 1.29)

0.896

Diabetes

1.54(1.08, 2.20)

0.018

Anxiety

0.59(0.25, 1.39)

0.227

Depression

1.67(1.18, 2.37)

0.004

APOE-ε4 allele positive

1.04(0.73, 1.46)

0.845