Research Article

Protective Factors Modulate the Risk of Beta Amyloid in Alzheimer’s Disease

Table 3

Risk classification by brain Abeta and FDG stratified by ApoE.

LevelNo. of events/no. of populationHazard ratio95% CI

APOE-ɛ4 carrier
 a1. Group by AV45 and FDGA: and 4/103(reference)
B: and 2/184.8480.883-26.627
C: and 21/896.7982.333-19.808
D: and 38/6822.6018.031-63.605
 a2. A: 18/352.9082.389-6.089
B: 12/54(reference)
 a3. A: 20/333.6281.623–8.106
B: 9/35(reference)
APOE-ɛ4 noncarrier
 b1. Group by AV45 and FDGA: and 5/272(reference)
B: and 5/398.1442.347-28.253
C: and 9/587.2062.356-22.039
D: and 10/1850.7217.007-151.257
 b2. A: 3/104.3350.947-19.84
B: 5/41(reference)
 b3. A: 7/836945.000.00-missing
B: 4/17(reference)

. AV45: brain PET Abeta; FDG: CGM based on 18F-FDG-PET.