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Table 4 Multivariate analysis for overall and one-year all-cause cumulative mortality

From: Age-dependent differences in the prognostic relevance of body composition-related variables in type A aortic dissection patients

Variables

All

Young

Elderly

HR (95% CI)

p

HR (95% CI)

p

HR (95% CI)

p

Overall all-cause cumulative mortality

BMI (per 1 kg/m2 increase)

1.100 (0.955–1.123)

0.586

1.016 (0.833–1.187)

0.311

1.558 (0.846–1.988)

0.042

BSA (per 1 m2 increase)

1.148 (0.499–3.699)

0.678

1.306 (0.468–11.886)

0.811

0.551 (0.119–5.558)

0.568

Lean body mass (per 1 kg increase)

0.996 (0.836–1.965)

0.669

1.056 (0.647–2.655)

0.880

1.045 (0.788–1.396)

0.885

Lean body mass index (per 1 kg/m2 increase)

1.085 (0.998–1.667)

0.788

1.222 (0.885–1.778)

0.450

2.668 (0.585–2.966)

0.019

Categorical BMI

BMI ≥ 18.5 versus < 18.5 kg/m2

0.666 (0.466–1.772)

0.660

1.569 (0.336–6.338)

0.668

0.900 (0.116–0.978)

0.025

Categorical BMI

Overweight versus. normal weighta

0.550 (0.300–1.690)

0.355

1.110 (0.886–3.332)

0.665

0.378 (0.350–0.784)

0.096

Obesity versus normal weighta

0.832 (0.611–21.42)

0.565

1.915 (0.103–35.49)

0.639

4.390 (1.346–14.320)

0.039

One-year all-cause cumulative mortality

BMI (per 1 kg/m2 increase)

0.860 (0.666–1.211)

0.774

1.060 (1.000–2.002)

0.123

1.002 (0.330–1.315)

0.047

BSA (per 1 m2 increase)

0.411 (0.098–2.228)

0.656

0.888 (0.099–2.115)

0.988

0.858 (0.063–1.215)

0.066

Lean body mass (per 1 kg increase)

0.819 (0.229–1.316)

0.303

1.001 (0.820–1.235)

0.355

1.205 (0.057–1.464)

0.058

Lean body mass index (per 1 kg/m2 increase)

1.309 (1.425–2.040)

0.505

1.285 (0.585–1.898)

0.080

1.003 (0.576–1.223)

0.044

Categorical BMI

BMI ≥ 18.5 vs. < 18.5 kg/m2

0.590 (0.188–1.008)

0.086

1.008 (0.798–3.332)

0.487

0.810 (0.580–1.210)

0.049

Categorical BMI

Overweight versus normal weighta

0.330 (0.110–1.980)

0.188

0.988 (0.760–1.565)

0.078

0.533 (0.350–0.998)

0.240

Obesity versus normal weighta

1.285 (0.318–4.585)

0.169

2.858 (1.085–8.808)

0.081

4.365 (1.268–11.308)

0.032

  1. Bold values indicate p < 0.05
  2. BMI, body mass index; BSA, body surface area; HR, hazard ratio
  3. aNormal weight: BMI < 25 kg/m2; overweight: 25 kg/m2 ≤ BMI < 30 kg/m2; obesity: BMI ≥ 30 kg/m2