Table 2 Incidence and incidence rate of Alzheimer’s dementia in patients with MCI.

From: Twelve-year nationwide cohort study identifying risk factors for conversion from mild cognitive impairment to Alzheimer’s disease

Age (years)

No. of participants

No. of DAT cases

Person-year

Incidence rate per 1000 PY

40–49

10,663

102

82,278.09172

1.239698173

50–59

61,487

1453

454,907.6167

3.194055115

60–69

111,555

7863

797,375.5209

9.861100315

70–79

123,292

23,290

789,994.8145

29.48120617

 ≥ 80

29,316

8967

150,791.8029

59.46609716

  1. p-value for trend in DAT conversion proportion (Cochran-Armitage trend test): < 0.001.
  2. p-value for trend in DAT incidence rate: 0.025.
  3. DAT, dementia of the Alzheimer’s type; MCI, mild cognitive impairment; No., number; PY, person-year.
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