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Table 2 Risk of dementia according to continuity of physical activity

From: Association between physical activity and conversion from mild cognitive impairment to dementia

 

Never-PA (n = 99,873)

Initiation-PA (n = 45,598)

Withdrawal-PA (n = 45,014)

Maintenance-PA (n = 56,664)

DAT cases, n (%)

8658 (8.7%)

2888 (6.3%)

3445 (7.7%)

2742 (4.8%)

DAT incidence (per 1000 person-years)

33.25

24.11

29.13

18.77

Unadjusted HR (95% CI)

 DAT

1 (ref)

0.73 (0.70–0.76)

0.88 (0.84–0.91)

0.56 (0.54–0.59)

Adjusted HR* (95% CI)

 DAT

1 (ref)

0.89 (0.85–0.93)

1.00 (0.96–1.04)

0.82 (0.79–0.86)

  1. HR hazard ratio, CI confidence interval, DAT dementia of the Alzheimer type, PA physical activity
  2. *Adjusted for age, gender, hypertension, diabetes mellitus, dyslipidemia, body mass index, history of smoking, and history of alcohol intake