Table 3 Result of the Cox proportional hazards model for the association between alcohol consumption and CKD development stratified by BMI.

From: Effect of body mass index on the association between alcohol consumption and the development of chronic kidney disease

Amount of alcohol consumption

CKD

eGFR decline to < 60 mL/min/1.73 m2

New-onset of proteinuria

Multivariate modela

Multivariate modela

Multivariate modela

HR

95% CI

P trendb

P interactionc

HR

95% CI

P trendb

P interactionc

HR

95% CI

P trendb

P interactionc

BMI < 18.5 kg/m2

   

0.005

   

0.03

   

0.03

 Infrequent

Ref

 

0.003

 

Ref

 

0.054

 

Ref

 

0.019

 

 < 20 g/day

1.26

0.66–2.40

  

0.79

0.28–2.23

  

1.77

0.76–4.14

  

 20–39 g/day

3.44

1.60–7.42

  

1.94

0.48–7.81

  

4.58

1.75–12.0

  

 ≥ 40 g/day

3.21

1.23–8.37

  

5.86

1.42–24.2

  

2.66

0.75–9.40

  

BMI 18.5–24.9 kg/m2

 Infrequent

Ref

 

0.17

 

Ref

 

0.15

 

Ref

 

0.013

 

 < 20 g/day

0.78

0.65–0.95

  

0.96

0.72–1.27

  

0.67

0.52–0.86

  

 20–39 g/day

0.75

0.58–0.98

  

1.14

0.74–1.78

  

0.61

0.44–0.83

  

 ≥ 40 g/day

0.96

0.71–1.29

  

1.65

0.99–2.74

  

0.78

0.55–1.11

  

BMI ≥ 25 kg/m2

 Infrequent

Ref

 

0.028

 

Ref

 

0.018

 

Ref

 

0.16

 

 < 20 g/day

0.80

0.57–1.11

  

0.69

0.40–1.19

  

0.78

0.52–1.17

  

 20–39 g/day

0.63

0.39–1.04

  

0.26

0.08–0.86

  

0.76

0.44–1.32

  

 ≥ 40 g/day

0.61

0.34–1.11

  

0.45

0.13–1.52

  

0.68

0.36–1.32

  
  1. Outcomes were CKD (composite outcome of eGFR decline and/or new-onset of proteinuria) and eGFR decline and new-onset of proteinuria, respectively.
  2. CKD chronic kidney disease, eGFR estimated glomerular filtration rate, BMI body mass index, CI confidence interval, HR hazard ratio.
  3. aMultivariable adjustment included age, sex, eGFR, hypertension, diabetes mellitus, hyper lipidemia, smoking status.
  4. bP trend was derived from Cox proportional hazards regression models by treating alcohol consumption as a continuous linear term.
  5. cP interaction was derived by using a likelihood ratio test from models with and without the cross-product term of alcohol category (Infrequent, light, moderate, and heavy drinkers) and risk factor in the multivariable-adjusted model.