Table 2.
The Cox regression analysis for the indices that influence the survival rate of elderly patients with diabetes
| Factorsa | Simple | Multivariable (Model 1) b | Multivariable Model 2)c | Multivariable (Model 3) d | ||||
|---|---|---|---|---|---|---|---|---|
| Crude hazard ratio (CI95%) | P.value | Adjusted Hazard ratio (CI95%) | P.value | Adjusted hazard ratio (CI95%) | P.value | Adjusted hazard ratio (CI95%) | P.value | |
| BMI (kg/m2) | ||||||||
| < 25 25–29.9 ≥ 30 | 10.48 (0. 29–0.78) 0.37 (0. 20–0.66) |
0.001 0.003 0.001 |
10.41 (0. 24–0.72) 0. 30 (0. 14–0.63) |
- 0.002 0.002 |
1 0.41 (0. 19–0.79) 0. 30 (0. 11-0.70) |
- 0.009 0.009 |
1 0.41 (0. 24–0.70) 0.34 (0. 17–0.69) |
- 0.001 0.003 |
| Gender (male) | 1.54 (0.99–2.37) | 0.051 | 1. 21 (0.65–2. 28) | 0.545 | 1. 21 (0.56–2.78) | 0.622 | ||
| Age (1 year) | 1.11 (1.08–1. 14) | 0.000 | 1.08 (1.05–1. 12) | 0.000 | 1.08 (1.05–1. 13) | 0.001 | 1.09 (1.06–1. 13) | 0.000 |
| Cardio vascular diseases | 1.51 (0.98–2.33) | 0.060 | 1.38 (0.86–2. 20) | 0.180 | 1.38 (0.82–2.45) | 0.226 | ||
| Hypertension | 1.32 (0.80–2. 18) | 0.278 | 1.11 (0.66–1.88) | 0.688 | 1.11 (0.70–2. 15) | 0.679 | ||
| CVA and neurological diseases | 3.47 (2. 10-5.73) | 0.000 | 3. 12 (1.78–5.49) | 0.000 | 3. 12 (1.60–6.2) | 0.001 | 3. 29 (1.91–5.64) | 0.000 |
| WC ≥95 cm | 0.96 (0.62–1.48) | 0.847 | 1.76 (1.01–3.11) | 0.049 | 1.76 (0.94–3.94) | 0.083 | 1.75 (1.03–2.98) | 0.040 |
| Marital status (single) | 1.63 (0.99–2.67) | 0.052 | 1.39 (0.82–2.38) | 0.225 | 1.39 (0.74–2.53) | 0.226 | ||
| Smoking | 1.62 (0.98–2.67) | 0.061 | 1.62 (0.86–2.99) | 0.125 | 1.62 (0.73–3.58) | 0.198 | 1.58 (0.94–2.65) | 0.083 |
| Depression | 1. 19 (0.78–1.84) | 0.423 | 1.02 (0.61–1.70) | 0.936 | 1.02 (0.58–1.89) | 0.947 | ||
| Known DM | 0.63 (0.40–0.99) | 0.627 | 0.56 (0.34–0.93) | 0.024 | 0.56 (0.31–0.96) | 0.028 | 0.62 (0.38–1.01) | 0.053 |
| FBS ≥ 200 mg/dL | 1.57 (0.98–2.53) | 0.061 | 2.46 (1.46–4. 15) | 0.001 | 2.46 (1.35–4.57) | 0.001 | 2. 29 (1.38–3.80) | 0.001 |
| Ferritin ≥200 ng/mL | 1.35 (0.88–2.07) | 0.169 | 1.56 (0.99–2.46) | 0.053 | 1.56 (0.96–2.73) | 0.071 | ||
| Creatinine≥1 mg/dL | 1.61 (1.04–2.49) | 0.031 | 1.10 (0.66–1.83) | 0.726 | 1.10 (0.57–1.99) | 0.757 | ||
| Social support (DSSI≥ 25) | 0.58 (0.37–0.90) | 0.016 | 0.93 (0.57–1.54) | 0.781 | 0.93 (0.51–1.68) | 0.786 | ||
| Physical activity (≥150) | 0. 22 (0.08–0.59) | 0.003 | 0.36 (0. 13–0.99) | 0.049 | 0.36 (0.06–0.81) | 0.034 | 0.34 (0. 12–0.93) | 0.035 |
| Muscular strength (arm ≥25 kg) | 0.80 (0.51–1. 25) | 0.321 | 0.63 (0.32–1. 22) | 0.168 | 0.63 (0.32–1. 22) | 0.231 | ||
| Muscular strength (quadriceps ≥25 kg) | 0.74 (0.45–1. 22) | 0.742 | 1. 12 (0.56–2. 24) | 0.744 | 1. 12 (0.56–2. 24) | 0.767 | ||
aAll calculations were performed as the presence of these factors versus the absence of the factors.
bModel 1: The all independent variables/predictors were included Cox Proportional Hazard (CPH) regression.
cModel 2: The all independent variables/predictors were included CPH regression and performing the Bootstrap method.
dModel 4: The automatic backward CPH regression method that excluding p value criteria are 0.10.