Table 1.
Characteristics of participants by tertiles of the WWI in the NHANES 2005–2010 cycles
| Variables | Total (n = 12,992) | T1 (n = 4327) (8.11–10.64) | T2(n = 4137) (10.65–11.37) | T3 (n = 4458) (11.37–15.7) | P value |
|---|---|---|---|---|---|
| Age(years), Mean(SE) | 46.39 (0.35) | 38.84 (0.29) | 47.86 (0.34) | 55.59 (0.44) | < 0.001 |
| Sex, n (%) | < 0.001 | ||||
| Male | 6,342 (48.66%) | 2,447 (54.00%) | 2,127 (50.93%) | 1,768 (38.26%) | |
| Female | 6,580 (51.34%) | 1,880 (46.00%) | 2,010 (49.07%) | 2,690 (61.74%) | |
| Race/ethnicity,n(%) | < 0.001 | ||||
| Non-Hispanic white | 6,543 (72.17%) | 2,213 (72.49%) | 2,053 (71.42%) | 2,277 (72.60%) | |
| Non-Hispanic black | 3,067 (15.85%) | 1,330 (18.56%) | 926 (14.83%) | 811 (13.13%) | |
| Mexican American | 2,311 (7.90%) | 489 (5.27%) | 835 (9.51%) | 987 (9.83%) | |
| Others | 1,001 (4.08%) | 295 (3.68%) | 323 (4.24%) | 383 (4.45%) | |
| Marital status,n(%) | < 0.001 | ||||
| Married or living with partners | 8,013 (65.51%) | 2,511 (61.59%) | 2,751 (70.62%) | 2,751 (65.19%) | |
| Living alone | 4,909 (34.49%) | 1,816 (38.41%) | 1,386 (29.38%) | 1,707 (34.81%) | |
| Education level(year), n(%) | < 0.001 | ||||
| < 9 | 1,405 (5.51%) | 214 (2.89%) | 421 (5.42%) | 770 (9.41%) | |
| 9–12 | 5,164 (36.27%) | 1,553 (29.90%) | 1,664 (38.06%) | 1,947 (43.39%) | |
| > 12 | 6,353 (58.22%) | 2,560 (67.21%) | 2,052 (56.51%) | 1,741 (47.20%) | |
| Family income, n(%) | < 0.001 | ||||
| Low | 3,770 (18.91%) | 1,083 (16.13%) | 1,158 (18.07%) | 1,529 (23.92%) | |
| Medium | 4,978 (36.03%) | 1,550 (33.03%) | 1,610 (36.54%) | 1,818 (39.78%) | |
| High | 4,174 (45.06%) | 1,694 (50.83%) | 1,369 (45.40%) | 1,111 (36.30%) | |
| Physical activity, n(%) | < 0.001 | ||||
| Inactive | 6,316 (45.68%) | 1,706 (37.71%) | 1,991 (46.48%) | 2,619 (56.27%) | |
| Active | 6,606 (54.32%) | 2,621 (62.29%) | 2,146 (53.52%) | 1,839 (43.73%) | |
| Alcohol intake, n(%) | < 0.001 | ||||
| No | 3,623 (23.64%) | 938 (18.02%) | 1,129 (23.94%) | 1,556 (31.43%) | |
| Yes | 9,299 (76.36%) | 3,389 (81.98%) | 3,008 (76.06%) | 2,902 (68.57%) | |
| Smoking status, n(%) | < 0.001 | ||||
| Never | 6,772 (52.77%) | 2,375 (56.23%) | 2,138 (51.15%) | 2,259 (49.66%) | |
| Current | 3,292 (24.94%) | 791 (19.36%) | 1,101 (27.16%) | 1,400 (30.39%) | |
| Former | 2,858 (22.29%) | 1,161 (24.41%) | 898 (21.68%) | 799 (19.95%) | |
| Coronary heart disease, n(%) | < 0.001 | ||||
| No | 12,418 (96.88%) | 4,279 (99.19%) | 3,984 (96.76%) | 4,155 (93.68%) | |
| Yes | 504 (3.12%) | 48 (0.81%) | 153 (3.24%) | 303 (6.32%) | |
| Diabetes,n(%) | < 0.001 | ||||
| No | 11,519 (92.26%) | 4,198 (97.97%) | 3,769 (93.51%) | 3,552 (82.54%) | |
| Yes | 1,403 (7.74%) | 129 (2.03%) | 368 (6.49%) | 906 (17.46%) | |
| Hypertension, n(%) | < 0.001 | ||||
| No | 9,286 (75.15%) | 3,737 (88.10%) | 3,025 (74.62%) | 2,524 (57.02%) | |
| Yes | 3,636 (24.85%) | 590 (11.90%) | 1,112 (25.38%) | 1,934 (42.98%) | |
| Stroke, n(%) | < 0.001 | ||||
| No | 12,661 (97.19%) | 4,339 (99.02%) | 4,070 (97.68%) | 4,252 (93.97%) | |
| Yes | 487 (2.81%) | 59 (0.98%) | 134 (2.32%) | 294(6.03%) | |
| Congestive heart failure, n(%) | < 0.001 | ||||
| No | 12,557 (98.02%) | 4,287 (99.48%) | 4,027 (98.12%) | 4,243 (95.80%) | |
| Yes | 365 (1.98%) | 40 (0.52%) | 110 (1.88%) | 215 (4.20%) | |
| Cancer, n(%) | < 0.001 | ||||
| No | 11,693 (90.91%) | 4,100 (94.71%) | 3,765 (90.57%) | 3,828 (85.80%) | |
| Yes | 1,229 (9.09%) | 227 (5.29%) | 372 (9.43%) | 630 (14.20%) | |
| Calorie consumption (kcal/d), | |||||
| Mean (SE) | 2,207.99 (15.42) | 2,389.65 (22.89) | 2,205.92 (24.89) | 1,947.46 (21.72) | < 0.001 |
| Protein consumption(g/d), | |||||
| Mean(SE) | 84.67 (0.64) | 91.14 (0.83) | 84.30 (1.02) | 75.73 (0.92) | < 0.001 |
| Carbohydrate consumption(g/d), | |||||
| Mean(SE) | 263.72 (1.89) | 286.31 (2.83) | 261.34 (3.16) | 233.82 (2.38) | < 0.001 |
| Fat consumption(g/d), Mean(SE) | 83.97 (0.77) | 88.87 (1.13) | 84.77 (1.09) | 75.94 (1.25) | < 0.001 |
| FI, n (%) | < 0.001 | ||||
| No | 11,770 (91.82%) | 4,095 (95.18%) | 3,808 (92.10%) | 3,867 (86.61%) | |
| Yes | 1,152 (8.18%) | 232 (4.82%) | 329 (7.90%) | 591 (13.39%) | |
| Body mass index(kg/m2), n(%) | < 0.001 | ||||
| normal weight | 3,718 (31.43%) | 2,262 (53.81%) | 953 (21.37%) | 503 (10.85%) | |
| over weight | 4,448 (33.77%) | 1,426 (32.68%) | 1,662 (40.10%) | 1,360 (27.94%) | |
| obese | 4,756 (34.79%) | 639 (13.51%) | 1,522 (38.53%) | 2,595 (61.21%) | |
| Waist circumference(cm),Mean(SE) | 98.13 (0.31) | 87.02 (0.26) | 100.25 (0.21) | 111.74 (0.34) | < 0.001 |
WWI, weight-adjusted-waist index; FI, fecal incontinence; SE, standard error. data presented as unweighted numbers (weighted percentage) for categorical variables and mean (standard error) for continuous variables