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Table 5 Relationship between episodic memory level 2 and perceptual motor speedfunctioning and conversion to AD over a two-year period by APOE4 allelestatus

From: Modeling the heterogeneity in risk of progression to Alzheimer's disease acrosscognitive profiles in mild cognitive impairment

Converted to AD Low episodic memory function and no APOE4 allelea Low episodic memory function and at least one APOE4alleleb
  Low perceptual motor speed function Not low perceptual motor speed function Total Low perceptual motor speed function Not low perceptual motor speed Function Total
Yes 63.6% (7) 54.5% (6) 59.1% (13) 84.2% (16) 37.8% 17) 61.2% (18)
No 36.4% (4) 45.5% (5) 40.9% (9) 15.8% (3) 62.2% (28) 38.8% (10)
Total 100% (11) 100% (11) 100% (22) 100% (19) 100% (13) 100% (28)
  1. Results are presented as the percent (number) of patients.aFisher'sexact test two-sided P-value = 1.00 for a test of no association.bFisher's exact test two-sided P-value = 0.013 for atest of no association. AD, Alzheimer's disease; APOE, Apolipoprotein.
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