Table 3 Univariate and multivariate Cox regression analysis results of low-weight patients.

From: Development and validation of a BMI stratified mortality prediction model for patients with COPD complicated by HF using the MIMIC-IV database

Characteristics

Uni-HR

Uni-CI

Uni-P

Multi-HR

Multi-CI

Multi-P

Age

1.031

0.978–1.087

0.261

   

Gender

1.434

0.432–4.767

0.556

   

Race

0.883

0.518–1.505

0.647

   

SBP(mmHg)

1.02

0.987–1.055

0.243

   

DBP(mmHg)

1.005

0.918–1.101

0.915

   

HR(bpm)

1.036

0.985–1.09

0.166

   

RR(bpm)

1.123

0.893–1.412

0.322

   

Temperature(℃)

1.014

0.313–3.29

0.981

   

SaO2(%)

0.996

0.942–1.052

0.874

   

pH

1.541

0–292,393.233

0.944

   

Hemoglobin(g/dL)

0.99

0.709–1.384

0.955

   

Platelet(× 109/L)

1.001

0.996–1.006

0.715

   

WBC(× 109/L)

1.028

0.995–1.063

0.098

1.058

1.005–1.114

0.031

Bicarbonate(mmol/L)

0.942

0.842–1.054

0.299

   

BUN(mg/dL)

1.007

0.995–1.018

0.256

   

Calcium(mg/dL)

0.355

0.091–1.379

0.135

   

Glucose(mg/dL)

1.006

0.992–1.021

0.388

   

Serum sodium(mmol/L)

1.054

0.936–1.189

0.385

   

Serum potassium(mmol/L)

0.81

0.262–2.51

0.715

   

Lymphocytes(× 109/L)

2.187

0.331–14.425

0.416

   

Monocytes(× 109/L)

2.094

0.592–7.402

0.251

   

Neutrophils(× 109/L)

1.061

0.87–1.295

0.559

   

PT(s)

1.034

0.848–1.262

0.739

   

aPTT(s)

1.024

0.998–1.051

0.068

   

Cerebrovascular disease:

0.818

0.169–3.959

0.802

   

Dementia:

17.678

1.061–294.662

0.045

   

Diabetes:

4.031

0.776–20.946

0.097

10.458

1.515–72.564

0.017

Mild liver disease:

2.434

0.295–20.093

0.409

   

Severe liver disease:

2.434

0.295–20.093

0.409

   

Myocardial infarct:

0.399

0.096–1.663

0.207

   

Peripheral vascular disease:

0.798

0.204–3.126

0.746

   

Renal disease:

1.817

0.547–6.041

0.33

   

Rheumatic disease:

0.642

0.07–5.872

0.695

   

SOFA

1.028

0.867–1.219

0.751

   

GCS

0.681

0.445–1.043

0.078

   
  1. SaO2(%)—arterial oxygen saturation (percent); pH—potential of hydrogen; HR—heart rate; SBP—systolic blood pressure; DBP—diastolic blood pressure; WBC—white blood cell count; HR—heart rate; RR—respiratory rate; BUN—blood urea nitrogen; PT—prothrombin time; aPTT—activated partial thromboplastin time; SOFA—sequential organ failure assessment; GCS—Glasgow Coma Scale.
  2. Gender: 1—Male, 2—Female; Race: 1—White, 2—Black, 3—Asian, 4-Other; Comorbidities: 1—YES, 2—NO.