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Table 4 Subgroup analysis of the association between dietary copper intake and cardiovascular mortality rate

From: The impact of dietary copper intake on cardiovascular morbidity and mortality among hypertensive patients: a longitudinal analysis from NHANES (2001–2018)

Character

95% CI

p

p for interaction

Sex

  

1

 Male

-0.16(-0.26, -0.07)

< 0.001

 

 Female

-0.16(-0.23, -0.10)

< 0.0001

 

Ethic

  

0.43

 White

-0.16(-0.23, -0.09)

< 0.0001

 

 Other

-0.2(-0.40, 0.00)

0.05

 

 Black

-0.07(-0.24, 0.11)

0.43

 

 Mexican

-0.26(-0.39, -0.13)

< 0.001

 

Education

  

0.06

 Less than 9th grade

-0.14(-0.26, -0.03)

0.01

 

 9-11th grade (Includes 12th grade with no diploma)

-0.18(-0.35,0.00)

0.05

 

 High school graduate/GED or equivalent

0.02(-0.07,0.11)

0.70

 

 Some college or AA degree

-0.14(-0.25, -0.04)

0.01

 

 College graduate or above

-0.22(-0.40, -0.05)

0.01

 

Diabetes

  

0.67

 No

-0.14(-0.22, -0.06)

< 0.001

 

 DM

-0.17(-0.27, -0.07)

< 0.001

 

 IFG

-0.01(-0.29,0.26)

0.92

 

 IGT

-0.11(-0.37,0.15)

0.40

 

Alcohol.user

  

0.23

 Former

-0.19(-0.29, -0.09)

< 0.001

 

 Mild

-0.12(-0.24,0.00)

0.05

 

 Heavy

0.08(-0.19,0.34)

0.57

 

 Moderate

-0.13(-0.30,0.05)

0.15

 

 Never

-0.17(-0.27, -0.07)

< 0.001

 

Smoke

  

0.16

 Former

-0.15(-0.24, -0.05)

0.002

 

 Now

-0.05(-0.22,0.12)

0.55

 

 Never

-0.22(-0.30, -0.13)

< 0.0001

 

Age

  

0.9

 < 60

-0.15(-0.21, -0.09)

< 0.0001

 

 ≥ 60

-0.18(-0.83,0.48)

0.45

 

BMI

  

0.77

 Normal weight

-0.15(-0.31,0.01)

0.06

 

 Over weight

-0.19(-0.26, -0.11)

< 0.0001

 

 Obesity

-0.13(-0.23, -0.03)

0.01

 
  1. Abbreviations: DM Diabetes Mellitus, IFG Impaired Fasting Glucose, IGT Impaired Glucose Tolerance, BMI Body Mass Index