Table 3.
Response frequency of dietary components included in the PREDIMED questionnaire according to presence/absence of thyroid nodular disease.
| Questions of PREDIMED questionnaire | Nodules presence | Nodules absence | ||||
|---|---|---|---|---|---|---|
| n | % | n | % | χ2 | *p-value | |
| Use of extra virgin olive oil as main culinary lipid | 273 | 69.8 | 341 | 84.6 | 66.22 | <0.001 |
| Extra virgin olive oil >4 tablespoons | 177 | 45.3 | 218 | 54.1 | 5.84 | 0.016 |
| Vegetables ≥2 servings/day | 130 | 33.2 | 247 | 61.3 | 61.46 | <0.001 |
| Fruits ≥3 servings/day | 100 | 25.6 | 286 | 71.0 | 110.67 | <0.001 |
| Red/processed meats <1/day | 129 | 33.0 | 305 | 75.7 | 144.22 | <0.001 |
| Butter, cream, margarine <1/day | 234 | 59.8 | 200 | 49.6 | 7.96 | 0.004 |
| Soda drinks <1/day | 184 | 47.1 | 199 | 49.4 | 0.34 | 0.559 |
| Wine glasses ≥7/week | 95 | 24.3 | 162 | 40.2 | 22.20 | <0.001 |
| Legumes ≥3/week | 146 | 37.3 | 228 | 56.6 | 28.70 | <0.001 |
| Fish/seafood ≥3/week | 79 | 20.2 | 329 | 81.6 | 297.37 | <0.001 |
| Commercial sweets and confectionery ≤ 2/week | 123 | 31.5 | 182 | 45.2 | 15.18 | 0.001 |
| Tree nuts ≥3/week | 89 | 22.8 | 151 | 37.5 | 19.66 | <0.001 |
| Poultry more than red meats | 177 | 45.3 | 210 | 52.1 | 6.64 | 0.010 |
| Use of sofrito sauce ≥2/week | 121 | 30.9 | 161 | 40.0 | 3.45 | 0.063 |
PREDIMED, Prevención con Dieta Mediterránea. *A significant difference (p < 0.05).