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Table 4 Competing Risk Models and Cox Proportional Hazard Models of Frailty and Incident Dementia in Two Age Groups*

From: The association between frailty and incidence of dementia in Beijing: findings from 10/66 dementia research group population-based cohort study

Frailty definition

Lower quartile of age(N = 538)

Upper three quartiles of age(N = 1484)

Competing risk model

HR (95% CI)

Cox proportional hazards model

HR (95%CI)

Competing risk model

HR (95% CI)

Cox proportional hazards model

HR (95%CI)

Modified Fried Frailty Phenotype

 No frailty

1.00

1.00

1.00

1.00

 Frailty

0.89(0.23, 3.50)

0.96(0.16, 5.61)

1.25(0.75, 2.08)

1.28(0.77, 2.15)

Physical Frailty

 No frailty

1.00

1.00

1.00

1.00

 Frailty

1.94(0.481, 7.80)

2.13(0.48, 9.37)

1.28(0.83, 1.96)

1.38(0.92, 2.08)

Multidimensional Frailty

 No frailty

1.00

1.00

1.00

1.00

 Frailty

1.52 0.47, 4.86)

1.643(0.46, 5.84)

1.61 (1.06, 2.43)

1.76(1.19, 2.61)

  1. N Number of participants; HR Hazard Ratio; CI Confidence interval
  2. *Risk of incident dementia is adjusted age, gender, education level, physical multimorbidity, walking distance per week, smoking status alcohol use