Table 1 Population characteristics by categories of dietary fiber intake.

NO

4453

1091

1127

1121

1114

Age (year), n (%)

 < 40

2378 (53.4)

601 (55.1)

608 (53.9)

606 (54.1)

563 (50.5)

 40–50

1424 (32.0)

344 (31.5)

355 (31.5)

360 (32.1)

365 (32.8)

  > 50

651 (14.6)

146 (13.4)

164 (14.6)

155 (13.8)

186 (16.7)

BMI(Kg/m²), n (%)

0.22

 < 25

1592 (36.1)

371 (34.5)

383 (34.2)

412 (37.1)

426 (38.5)

 25–30

1185 (26.9)

284 (26.4)

304 (27.1)

306 (27.5)

291 (26.3)

 > 30

1635 (37.1)

420 (39.1)

433 (38.7)

393 (35.4)

389 (35.2)

Race/Ethnicity, n (%)

 < 0.001

 Mexican American

1006 (22.6)

175 (16)

213 (18.9)

273 (24.4)

345 (31)

 Other Race

400 (9.0)

86 (7.9)

120 (10.6)

98 (8.7)

96 (8.6)

 Non-Hispanic White

2051 (46.1)

478 (43.8)

500 (44.4)

548 (48.9)

525 (47.1)

 Non-Hispanic Black

996 (22.4)

352 (32.3)

294 (26.1)

202 (18)

148 (13.3)

Family Income, n (%)

 < 0.001

 Low

1177 (28.3)

347 (34.2)

294 (27.9)

287 (27.4)

249 (23.8)

 Medium

1521 (36.5)

386 (38)

400 (38)

361 (34.5)

374 (35.7)

 High

1464 (35.2)

283 (27.9)

358 (34)

399 (38.1)

424 (40.5)

Education Level(year), n (%)

 < 0.001

 < 9

383 (8.6)

72 (6.6)

74 (6.6)

104 (9.3)

133 (11.9)

9–12

1695 (38.1)

514 (47.1)

462 (41)

392 (35)

327 (29.4)

 > 12

2371 (53.2)

504 (46.2)

589 (52.3)

624 (55.7)

654 (58.7)

Marital status, n (%)

 < 0.001

 Living with a partner

2613 (58.7)

558 (51.1)

644 (57.1)

692 (61.7)

719 (64.5)

Living alone

1728 (38.8)

498 (45.6)

453 (40.2)

406 (36.2)

371 (33.3)

Smoking status, n (%)

 < 0.001

 Yes

1741 (39.1)

521 (47.8)

468 (41.5)

386 (34.4)

366 (32.9)

 No

2709 (60.8)

569 (52.2)

659 (58.5)

734 (65.5)

747 (67.1)

Vigorous activity, n (%)

 < 0.001

 Yes

1509 (33.9)

313 (28.7)

387 (34.3)

383 (34.2)

426 (38.2)

 No

2855 (64.1)

742 (68)

717 (63.6)

723 (64.5)

673 (60.4)

Unable to do activity

87 (2.0)

35 (3.2)

23 (2)

15 (1.3)

14 (1.3)

Moderate activity, n (%)

 < 0.001

 Yes

2320 (52.1)

498 (45.6)

580 (51.5)

605 (54)

637 (57.2)

 No

2065 (46.4)

566 (51.9)

530 (47)

503 (44.9)

466 (41.8)

 Unable to do activity

66 (1.5)

27 (2.5)

17 (1.5)

12 (1.1)

10 (0.9)

Alcohol drinker, n (%)

0.314

 Yes

2748 (61.7)

670 (61.4)

714 (63.4)

694 (61.9)

670 (60.1)

 No

1703 (38.2)

421 (38.6)

411 (36.5)

427 (38.1)

444 (39.9)

Dietary supplements taken, n (%)

 < 0.001

 Yes

2099 (47.1)

431 (39.5)

511 (45.4)

549 (49)

608 (54.6)

 No

2350 (52.8)

660 (60.5)

614 (54.5)

572 (51)

504 (45.2)

Birth control pills taken, n (%)

0.182

 Yes

3362 (75.5)

827 (75.8)

866 (76.8)

857 (76.4)

812 (72.9)

 No

1087 (24.4)

262 (24)

261 (23.2)

263 (23.5)

301 (27)

High blood pressure, n (%)

0.47

 Yes

867 (19.5)

234 (21.4)

229 (20.3)

201 (17.9)

203 (18.2)

 No

3558 (79.9)

850 (77.9)

893 (79.2)

913 (81.4)

902 (81)

Diabetes, n (%)

 Yes

236 (5.3)

48 (4.4)

69 (6.1)

50 (4.5)

69 (6.2)

 No

4176 (93.8)

1030 (94.4)

1046 (92.8)

1065 (95)

1035 (92.9)

Coronary heart disease, n (%)

0.888

 Yes

37 (0.8)

11 (1)

8 (0.7)

11 (1)

7 (0.6)

 No

4413 (99.1)

1080 (99)

1118 (99.2)

1109 (98.9)

1106 (99.3)

Chronic bronchitis, n (%)

0.016

 Yes

317 (7.1)

103 (9.4)

76 (6.7)

73 (6.5)

65 (5.8)

 No

4128 (92.7)

987 (90.5)

1047 (92.9)

1046 (93.3)

1048 (94.1)

Calorie consumption(kcal/d), Mean (SD)

1911.9 ± 816.1

1351.4 ± 574.7

1787.5 ± 625.5

2079.9 ± 737.9

2417.5 ± 888.2

Total cholesterol consumption(mg/d), Median (IQR)

194.0 (114.0, 329.0)

147.9 (83.5, 269.7)

195.9 (117.0, 312.9)

218.0 (136.0, 364.7)

214.0 (130.0, 358.5)

Total fat consumption(g/d), Median (IQR)

66.0 (45.4, 91.8)

47.5 (30.4, 67.6)

64.2 (46.0, 87.0)

73.7 (54.2, 98.5)

81.1 (57.2, 111.7)