Table 2 The baseline characteristics of males stratified by the diagnosis of erectile dysfunction: NHANES 2001–2004

Age (year)

41 [31;51]

60 [50;70]

40 [30;49]

< 0.001

Race/ethnicity (%)

0.132

 Mexican American

350 (6.8%)

82 (7.4%)

268 (6.8%)

 Other Hispanic

59 (4.0%)

14 (5.9%)

45 (3.7%)

 Non-Hispanic White

1039 (75.5%)

222 (77.3%)

817 (75.2%)

 Non-Hispanic Black

340 (9.0%)

47 (6.6%)

293 (9.3%)

 Other Race - Including Multi-Racial

72 (4.8%)

7 (2.8%)

65 (5.1%)

Poverty income ratio

3.80 [2.18, 5.00]

3.14 [1.76;5.00]

3.90 [2.27;5.00]

0.006

Education (%)

< 0.001

 < High school

363 (11.3%)

124 (22.8%)

239 (9.5%)

 High school/general educational development

438 (24.4%)

80 (25.1%)

358 (24.3%)

 > High school

1059 (64.3%)

168 (52.1%)

891 (66.2%)

Marital status (%)

0.006

 ith sex partner

1277 (70.2%)

284 (77.8%)

993 (69.1%)

 Without sex partner

583 (29.8%)

88 (22.2%)

495 (30.9%)

Hypertension (%)

< 0.001

 Yes

484 (22.5%)

189 (46.9%)

295 (18.8%)

 No

1376 (77.5%)

183 (53.1%)

1193 (81.2%)

Diabetes (%)

< 0.001

 Yes

149 (4.9%)

87 (19.5%)

62 (2.7%)

 No

1686 (94.2%)

277 (79.4%)

1409 (96.5%)

 Borderline

25 (0.9%)

8 (1.1%)

17 (0.8%)

C-reactive protein (mg/dL)

0.14 [0.06, 0.30]

0.21 [0.11, 0.40]

0.13 [0.06, 0.29]

< 0.001

Oxidative balance score

20 [15, 26]

18 [13, 24]

21 [15, 26]

0.001

Category

0.003

 Q1 (< 15)

500 (24.4%)

122 (32.2%)

378 (23.3%)

 Q2 (15 to 20)

437 (23.7%)

96 (26.6%)

341 (23.3%)

 Q3 (20 to 26)

463 (24.8%)

91 (23.5%)

372 (25.0%)

 Q4 (≥ 26)

460 (27.0%)

63 (17.7%)

397 (28.5%)