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Table 3 Stratified associations between AA intake and the prevalence of ED before and after PSM

From: Association between polyunsaturated fatty acid intake and the prevalence of erectile dysfunction: A cross-sectional analysis of the NHANES 2001–2004

Subgroup

Before PSM

After PSM

OR (95% CI)

P

P for interaction

OR (95% CI)

P

P for interaction

Age (years)

  

0.239

  

0.456

< 40

0.54 (0.21, 1.38)

0.197

 

0.52 (0.16, 1.71)

0.285

 

≥ 40

0.29 (0.15, 0.55)

< 0.001

 

0.32 (0.15, 0.65)

0.002

 

BMI (kg/m2)

  

0.857

  

0.823

< 25

0.36 (0.13, 1.01)

0.053

 

0.31 (0.09, 1.05)

0.061

 

25-29.99

0.30 (0.13, 0.69)

0.005

 

0.31 (0.12, 0.81)

0.017

 

≥ 30

0.42 (0.16, 1.06)

0.066

 

0.56 (0.20, 1.57)

0.274

 

Race

  

0.022

  

0.061

Mexican American

1.16 (0.37, 3.66)

0.807

 

1.61 (0.42, 6.12)

0.483

 

Non-Hispanic Black

0.36 (0.13, 1.01)

0.051

 

0.40 (0.12, 1.37)

0.147

 

Non-Hispanic White

0.17 (0.07, 0.37)

< 0.001

 

0.20 (0.09, 0.49)

< 0.001

 

Others

0.85 (0.11, 6.59)

0.879

 

0.15 (0.01, 2.44)

0.183

 

Education

  

0.010

  

0.009

Less than high school

0.88 (0.40, 1.91)

0.741

 

1.10 (0.46, 2.67)

0.826

 

High school

0.18 (0.06, 0.53)

0.002

 

0.19 (0.06, 0.63)

0.007

 

More than high school

0.15 (0.06, 0.37)

< 0.001

 

0.15 (0.05, 0.42)

< 0.001

 

Hypertension

  

0.429

  

0.576

No

0.36 (0.19, 0.67)

0.001

 

0.39 (0.19, 0.78)

0.009

 

Yes

0.27 (0.10, 0.72)

0.009

 

0.26 (0.08, 0.83)

0.022

 

Diabetes

  

0.260

  

0.312

No

0.37 (0.21, 0.66)

< 0.001

 

0.40 (0.21, 0.76)

0.006

 

Yes

0.19 (0.04, 0.85)

0.030

 

0.16 (0.02, 1.15)

0.069

 

Cardiovascular disease

  

0.573

  

0.565

No

0.35 (0.20, 0.60)

< 0.001

 

0.38 (0.20, 0.72)

0.003

 

Yes

0.28 (0.04, 1.85)

0.185

 

0.21 (0.03, 1.62)

0.133

 

Vigorous activity

  

0.150

  

0.286

No

0.28 (0.15, 0.53)

< 0.001

 

0.32 (0.16, 0.65)

0.002

 

Yes

0.48 (0.18, 1.33)

0.158

 

0.64 (0.18, 2.28)

0.494

 

Moderate activity

  

0.478

  

0.699

No

0.39 (0.20, 0.77)

0.007

 

0.40 (0.18, 0.89)

0.025

 

Yes

0.26 (0.11, 0.59)

0.002

 

0.30 (0.11, 0.78)

0.014

 

Smoking status

  

0.402

  

0.518

Non smoker

0.21 (0.09, 0.50)

< 0.001

 

0.25 (0.09, 0.69)

0.007

 

Previous smoker

0.53 (0.20, 1.38)

0.190

 

0.47 (0.16, 1.38)

0.170

 

Current smoker

0.51 (0.19, 1.34)

0.170

 

0.58 (0.19, 1.82)

0.354

 
  1. Notes: Bold fonts indicate P for interaction < 0.05. All covariates were adjusted in this model without adjusting the stratified variable itself. Abbreviations: AA, arachidonic acid; ED, erectile dysfunction; BMI, body mass index; PSM, propensity score matching; OR, odds ratio; CI, confidence interval
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Lipids in Health and Disease

ISSN: 1476-511X