Research Article

Predictors of the Progression of Dementia Severity in Brazilian Patients with Alzheimer's Disease and Vascular Dementia

Table 3

Predictive factors in Cox Proportionate Hazards Models, including diagnosis of dementia, age, educational level, sex, family history of dementia, CT scan findings, and vascular risk factors, for the progression of dementia (worsening of severity according to CDR scale).

VariableHazards ratioCI 95% lower–upper -value

Diagnosis of dementia18.6270.94–370.77.0552.925
Age1.06096–1.17.2540.058
Sex0.5100.13–1.96.327−0.673
Educational level1.3231.10–1.59.0020.280
Vascular risk factors.329
Hypertension38.321.37–1070.3.0323.646
Diabetes mellitus0.000 0.00–2.3 .992−9.928
Hypertension diabetes mellitus28.300.74 – 1082.7.072 3.343
Family history of dementia.339
 Present0.4730.09–2.62.392−0.748
 Unknown0.3050.05–1.81.191−1.187
CT findings.985
 Mild diffuse atrophy AND/OR ventricles547201.70.00–8.5 .91913.213
 Atrophy leukoaraiosis728853.10.00–1.1 .91813.499
 Focal abnormality392780.90.00 –6.1 .92112.881

Diagnosis of dementia: 0 = VaD; 1= AD.