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Table 3 Stratified relationships between CDAl and ED prevalence in U.S. male adults

From: Association between the composite dietary antioxidant index and erectile dysfunction in US men: a cross-sectional study

Subgroup

Prior to PSM

Following PSM

OR (95%CI)

P

P for interaction

OR (95%CI)

P

P for interaction

Age(y)

  

0.988

  

0.549

 < 50

0.77(0.51,1.17)

0.229

 

0.83 (0.46,1.50)

0.534

 

 ≥ 50

0.70(0.56,0.89)

0.003

 

0.71 (0.55,0.91)

0.007

 

Race

  

0.128

  

0.088

 Mexican American

0.58 (0.38,0.91)

0.017

 

0.50 (0.29,0.87)

0.014

 

 Other Hispanic

1.24 (0.30,5.22)

0.767

 

2.12 (0.31,14.50)

0.444

 

 Non-Hispanic white

0.82 (0.63,1.07)

0.144

 

0.81 (0.60,1.08)

0.155

 

 Non-Hispanic black

0.42 (0.22,0.78)

0.006

 

0.37 (0.17,0.78)

0.009

 

 Other

1.28 (0.26,6.19)

0.763

 

26.22 (0.35,1937.19)

0.137

 

Education

  

0.532

  

0.649

 Less than high school

0.78 (0.54,1.13)

0.183

 

0.67 (0.43,1.05)

0.082

 

 High school diploma

0.60 (0.39,0.92)

0.018

 

0.77 (0.47,1.25)

0.290

 

 More than high school

0.72 (0.53,0.98)

0.036

 

0.66 (0.47,0.93)

0.019

 

PIR

  

0.396

  

0.415

 < 2

0.61 (0.44,0.86)

0.005

 

0.59 (0.39,0.89)

0.012

 

 ≥ 2

0.78 (0.60,1.01)

0.057

 

0.80 (0.60,1.06)

0.122

 

Smoking

  

0.850

  

0.811

 Yes

0.73 (0.57,0.93)

0.012

 

0.75 (0.56,0.99)

0.041

 

 No

0.66 (0.46,0.95)

0.025

 

0.64 (0.42,0.97)

0.038

 

BMI(kg/m2)

  

0.431

  

0.443

 < 25

0.63 (0.42,0.96)

0.033

 

0.95 (0.58,1.54)

0.822

 

 25-29.99

0.79 (0.59,1.08)

0.137

 

0.69 (0.49,0.98)

0.038

 

 ≥ 30

0.69 (0.47,0.99)

0.046

 

0.61 (0.41,0.93)

0.022

 

Hypertension

  

0.752

  

0.822

 No

0.72 (0.54,0.95)

0.023

 

0.72 (0.51,1.02)

0.067

 

 Yes

0.74 (0.55,0.98)

0.038

 

0.72 (0.53,1.00)

0.050

 

Diabetes

  

0.419

  

0.091

 No

0.77 (0.61,0.96)

0.023

 

0.80 (0.62,1.04)

0.094

 

 Yes

0.56 (0.35,0.88)

0.013

 

0.46 (0.27,0.79)

0.005

 

Vigorous activity status

  

0.053

  

0.012

 Yes

0.54 (0.35,0.83)

0.005

 

0.42 (0.25,0.71)

0.001

 

 No

0.80 (0.63,1.01)

0.057

 

0.85 (0.65,1.10)

0.221

 

Moderate activity status

  

0.177

  

0.227

 Yes

0.89 (0.66,1.19)

0.429

 

0.90 (0.64,1.27)

0.535

 

 No

0.61 (0.46,0.81)

< 0.001

 

0.62 (0.45,0.85)

0.003

 
  1. In this model, all covariates have been adjusted without adjusting the stratified variable itself