Table 1.
Baseline characteristics of study population by MetS classification
| Characteristics* | MetS |
|||
|---|---|---|---|---|
| Men (n = 1,609) |
Women (n = 783) |
|||
| No (n= 937) | Yes (n = 672) | No (n = 506) | Yes (n = 277) | |
| Demographics | ||||
| Age, y | 66.1 ± 8.9 | 65.8 ± 8.2 | 65.1 ± 9.4 | 66.7 ± 7.8 |
| White (ethnicity/race)† | 894 (95.8) | 624 (94.4) | 482 (95.8) | 261 (94.6) |
| Education, y† | 14.1 ± 2.5 | 13.9 ± 2.3 | 13.4 ± 2.2 | 13.0 ± 2.1 |
| Dietary intake | ||||
| Energy, kcal/d | 2,095.6 ± 749.4 | 2,209.9 ± 773.2 | 1,552.6 ± 577.0 | 1,593.2 ± 614.7 |
| Protein, g/d | 76.9 ± 28.2 | 82.6 ± 29.2 | 58.4 ± 21.0 | 62.4 ± 27.6 |
| Carbohydrates, g/d | 281.9 ± 111.5 | 300.1 ± 119.0 | 222.7 ± 91.8 | 223.2 ± 94.1 |
| Total dietary fiber, g/d | 22.9 ± 10.1 | 24.1 ± 10.8 | 19.2 ± 8.9 | 19.7 ± 10.5 |
| Total fat, g/d | 71.2 ± 31.4 | 74.8 ± 31.9 | 50.2 ± 24.2 | 53.3 ± 25.8 |
| Calcium, mg/day | 968.8 ± 443.3 | 1,038.0 ± 446.7 | 834.7 ± 399.5 | 876.5 ± 461.2 |
| Red meat, g/d | 61.8 ± 41.7 | 67.4 ± 44.5 | 33.6 ± 24.3 | 42.6 ± 34.7 |
| Alcohol, g/d | 10.6 ± 18.0 | 9.1 ± 16.2 | 3.6 ± 6.3 | 2.8 ± 5.5 |
| Nondietary factors | ||||
| Smoking status† | ||||
| Never | 237 (25.5) | 171 (25.8) | 240 (47.7) | 110 (47.4) |
| Former | 578 (62.3) | 415 (62.5) | 175 (34.8) | 109 (39.9) |
| Current | 113 (12.2) | 78 (11.7) | 88 (17.5) | 34 (12.5) |
| BMI† | 26.5 ± 3.4 | 30.3 ± 4.2 | 25.2 ± 4.3 | 30.6 ± 5.4 |
| Waist-to-hip ratio | 0.93 ± 0.05 | 0.97 ± 0.05 | 0.79 ± 0.08 | 0.86 ± 0.07 |
| Diabetes (self-reported)† | 50 (5.4) | 107 (16.3) | 10 (2.0) | 46 (16.7) |
| Aspirin use‡ | 283 (30.2) | 230 (34.2) | 102 (20.2) | 53 (19.1) |
| Previous polyps†§ | 372 (43.0) | 281 (45.5) | 178 (39.3) | 101 (40.2) |
| Family history of colorectal cancer†|| | 186 (20.7) | 138 (21.2) | 122 (25.3) | 70 (26.2) |
| Adenoma characteristics | ||||
| Size of largest adenoma, mm† | 8.5 ± 5.7 | 8.3 ± 5.3 | 8.7 ± 6.4 | 9.1 ± 5.8 |
| No. adenomas† | 1.8 ± 1.3 | 1.8 ± 1.6 | 1.5 ± 1.1 | 1.7 ± 1.0 |
| Proximal adenomas† | 457 (50.6) | 379 (57.8) | 213 (44.1) | 135 (50.2) |
| Tubulovillous/villous† | 186 (19.9) | 141 (21.0) | 107 (21.2) | 71 (25.6) |
*
Count and percentage for categorical variables; mean ± SD for continuous variables.
†
Participants with missing data: education 21, BMI 18, size of largest adenoma 1, number of adenomas 5, White 19, smoking status 24, diabetes 35, previous polyps 205, family history of colorectal cancer 93, proximal adenomas 81, and tubulovillous/villous histology 2.
‡
Regular use of aspirin in the previous month.
§
History of previous polyps before qualifying colonoscopy.
||
History of colorectal cancer in parent or sibling.