Table 3

Study of the independent effect of sex and educational attainment on dementia and Alzheimer’s disease. PAQUID 1989–95. n=2881

DementiaAlzheimer’s disease
HR (95% CI)p ValueLog likelihoodHR (95% CI)p ValueLog likelihood
Model 1−1106.78−796.87
 Sex3-150 (female v male)0.396 (0.09–0.90)0.0330.395 (0.06–1.17)0.081
 Age by sex1.072 (1.014–1.132)0.0131.076 (1.007–1.149)0.029
Model 2−1101.83−794.72
 Education1.83 (1.37–2.44)<0.0011.81 (1.30–2.53)<0.001
Model 3−1098.66−791.22
 Sex3-150 (femalev male)0.376 (0.082–0.857)0.0270.378 (0.061–1.125)0.072
 Age by sex1.072 (1.014–1.132)0.0131.076 (1.007–1.149)0.030
 Education1.82 (1.36–2.42)<0.0011.78 (1.27–2.45)<0.001
  • 3-150 The hazard ratio is given for a woman aged 65. The hazard ratio of developing Alzheimer’s disease for a women aged 85 years is : 0.395×(1.076)(85–65) = 1.71