Table 3 Hazard ratios and 95% CI for dementia incidence according to the STAD cut-off points

STAD total score

 ≤ 4 points

Reference

Reference

 ≥ 5 points

4.98

2.61–9.48

2.67

1.40–5.08

Potential confounding factors

 Age (years)

1.10

1.05–1.16

 Sex (female)

1.72

0.87–3.42

 Education (years)

1.07

0.95–1.20

 Hypertension (yes)

0.61

0.34–1.10

 Heart disease (yes)

1.69

0.88–3.26

 Diabetes mellitus (yes)

0.89

0.35–2.29

 Hyperlipidemia (yes)

0.82

0.44–1.51

 Drinking habit (yes)

1.27

0.69–2.33

 Smoking habit (yes)

1.24

0.42–3.70

 Slow gait speed (yes)

1.01

0.45–2.26

 Living alone (yes)

1.14

0.46–2.83

 Physical inactivity (yes)

0.96

0.51–1.82

 MMSE (score)

0.83

0.74–0.94