Table 3. Age-adjusted* baseline† characteristics by quintile of baseline serum thyroid stimulating hormone (TSH).
| Quintile of serum thyroid stimulating hormone (TSH) (µIU/mL) | |||||
| Q1<0.8 | Q2 0.8 - <1.1 | Q3 1.1 - <1.5 | Q4 1.5 - <2.2 | Q5≥2.2 | |
| Age | 58.0 | 57.5 | 57.1 | 56.7 | 57.4 |
| Height (cm) | 174 | 174 | 174 | 174 | 174 |
| Weight (kg) | 78.2 | 78.7 | 79.4 | 79.9 | 80.0 |
| BMI (kg/m2) | 25.8 | 26.1 | 26.1 | 26.5 | 26.4 |
| Serum cholesterol (mmol/L) | 6.1 | 6.2 | 6.4 | 6.3 | 6.3 |
| Serum α-tocopherol (mg/L) | 11.4 | 11.9 | 12.2 | 12.3 | 12.1 |
| Serum β-carotene (µg/L) | 237 | 231 | 236 | 206 | 203 |
| Serum retinol (µg/L) | 572 | 590 | 603 | 595 | 615 |
| Serum total T4 | 7.8 | 7.8 | 7.8 | 8.2 | 7.7 |
| Serum TBG | 19.6 | 19.6 | 20.5 | 21.2 | 21.0 |
| Serum free T4 | 1.7 | 1.7 | 1.6 | 1.7 | 1.5 |
| Cigarettes per day | 20.5 | 19.6 | 19.4 | 19.0 | 19.5 |
| Years of smoking | 35.6 | 35.3 | 35.5 | 35.2 | 34.8 |
| Family history of prostate cancer | |||||
| % | 5.5 | 6.0 | 4.3 | 5.3 | 5.3 |
| Physically active | |||||
| % | 23.8 | 20.4 | 23.1 | 24.5 | 17.5 |
| >Elementary school education | |||||
| % | 21.6 | 21.1 | 28.6 | 31.7 | 26.7 |
| Married | |||||
| % | 81.5 | 79.7 | 80.8 | 79.2 | 78.0 |
| Urban residence | |||||
| % | 51.5 | 64.5 | 63.4 | 65.2 | 61.3 |
| Dietary intake per day | |||||
| Total energy (kcal) | 2,718 | 2,673 | 2,720 | 2,710 | 2,710 |
| Total fat (g) | 104 | 99.1 | 103 | 101 | 102 |
| Vitamin A (µg) | 1,521 | 1,463 | 1,532 | 1,530 | 1,420 |
| Vitamin D (µg) | 5.0 | 5.5 | 4.9 | 5.6 | 5.2 |
| Calcium (mg) | 1,434 | 1,346 | 1,437 | 1,404 | 1,400 |
| Fruit (g) | 207 | 223 | 205 | 233 | 212 |
| Vegetables (g) | 293 | 306 | 294 | 305 | 282 |
| Red meat (g) | 71.0 | 71.6 | 68.0 | 72.6 | 65.5 |
| Alcohol (ethanol, g) | 13.0 | 16.3 | 16.8 | 15.2 | 20.7 |
| Supplement use | |||||
| Vitamin A | |||||
| % | 7.9 | 14.2 | 14.5 | 13.9 | 10.3 |
| Vitamin D | |||||
| % | 3.7 | 10.8 | 7.8 | 6.4 | 7.5 |
| Calcium | |||||
| % | 7.7 | 16.7 | 12.3 | 12.0 | 9.2 |
*
- Directly standardized to the age distribution of the entire cohort. Values are means unless otherwise indicated.
†
- All characteristics are from the baseline questionnaire except family history which was collected during follow-up and is available for 889 men in this case control set. Baseline dietary data were available for 1,117 men, and 246 men claimed supplement use at baseline.