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Table 3 Factors associated with one-year mortality in Cox Proportional Hazards regression (N = 314)

From: Poor health status, inappropriate glucose-lowering therapy and high one-year mortality in geriatric patients with type 2 diabetes

Variables

Univariate model

Multivariable model

HR [95% CI]

p-value

HR [95% CI]

p-value

Socio-demographic characteristics

 Category of ages

  Age < 80 years

1.00

   

  Age 80–84 years

0.89 [0.53; 1.50]

0.660

  

  Age 85–89 years

1.04 [0.62; 1.76]

0.879

  

  Age ≥ 90 years

1.41 [0.80; 2.49]

0.234

  

 Sex (male vs. female)

1.26 [0.88; 1.80]

0.207

  

Health status, comorbidities and geriatric characteristics

 Health status (poor vs. intermediate)

1.80 [1.18; 2.74]

0.007

1.59 [1.04; 2.43]

0.033

 Ischaemic heart disease

1.44 [1.01; 2.06]

0.045

1.39 [0.97; 1.98]

0.074

 Nursing home residency

1.67 [1.13; 2.48]

0.010

  

 Malnutrition

1.65 [1.15; 2.38]

0.007

1.67 [1.16; 2.42]

0.006

 Recent falls

0.64 [0.45; 0.92]

0.015

0.63 [0.44; 0.91]

0.013

 Functional impairmenta

1.65 [1.11; 2.46]

0.014

  

 Polypharmacy

  Absent (0–4 drugs/day)

1.00

   

  Moderate (5–9 drugs/day)

2.08 [0.83; 5.19]

0.117

  

  Major (≥ 10 drugs/day)

2.41 [0.97; 6.01]

0.059

  

GLT characteristics

 Appropriateness

  Present

1.00

 

1.00

 

  Undertreatment

1.22 [0.65; 2.27]

0.534

1.22 [0.65; 2.28]

0.542

  Overtreatment

1.80 [1.12; 2.89]

0.015

1.73 [1.08; 2.79]

0.023

 Category of HbA1c

  HbA1c < 6.5%

1.82 [1.02; 3.22]

0.042

  

  HbA1c 6.5–7.4%

1.05 [0.58; 1.92]

0.866

  

  HbA1c 7.5–8.4%

1.00

   

  HbA1c ≥ 8.5%

1.16 [0.58; 2.33]

0.672

  

 Use of hypoglycaemic agents

1.71 [1.03; 2.86]

0.040

  

 Use of metformin

0.62 [0.42; 0.91]

0.015

  
  1. HR Hazard Ratio, CI Confidence interval, GLT Glucose-lowering therapy
  2. aFunctional impairment was defined as ≥2/5 impairments in basic activities of daily living (eating, bathing, dressing, toileting and transferring)