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Table 5 Hierarchical model with multivariate Poisson regression for pre-frailty (n = 1931). FIBRA Unicamp, Elderly, 2008–2009

From: Frailty and depressive symptoms in older adults: data from the FIBRA study - UNICAMP

Variables First step Second step Third step
  PR* 95 % CI p value PR* 95 % CI p value PR* 95 % CI p value
Age
 65–69 1.00 - - 1.00 - - 1.00 - -
 70–74 1.15 0.99–1.33 0.071 1.15 0.99–1.33 0.071 1.15 0.99–1.33 0.071
 75–79 1.22 1.03–1.45 0.025 1.21 1.02–1.44 0.028 1.21 1.02–1.44 0.033
> = 80 1.44 1.19–1.75 <0.001 1.45 1.19–1.76 <0.001 1.43 1.18–1.74 <0.001
No. of diseases
 0     1.00 - - 1.00 - -
 1–2     1.06 0.86–1.30 0.592 1.06 0.86–1.30 0.593
> = 3     1.24 1.01–1.53 0.040 1.19 0.96–1.47 0.106
GDS7
No        1.28 1.06–1.55 0.012
Yes        1.00 - -
GDS15
No        1.00 - -
Yes        1.19 1.04–1.37 0.013
GDS13
No        1.18 1.01–1.37 0.043
Yes        1.00 - -
  1. Note.*PR = Prevalence ratio for pre-frailty; (n = 891 non-frail and n = 1040 pre-frail)
  2. PR 95 % CI = 95 % confidence interval for prevalence ratio. Stepwise criteria for variable selection. Ref. reference level
  3. Variables considered in step 1: Age, sex, schooling, marital status and family income; step 2: Number of diseases and number of disabilities; step 3: items GDS1 to GDS15