Table 5.
Mean nutrient intakes in relation to serum folate quartiles in the study sample of Cretan adults.
| Serum folate quartiles (age- & gender-specific) | Correlation coefficient (r) | |||||
| Q1 | Q2 | Q3 | Q4 | Age/gender-adjusted1 | Multivariate-adjusted2 | |
| Energy (kcal) | 1700 | 1769 | 1595 | 1647 | -0.03 | - |
| Carbohydrates (g) | 179.1 | 184.7 | 192.7 | 185.2 | -0.01 | 0.03 |
| % energy | 44.5 | 45.3 | 47.7 | 45.4 | 0.03 | 0.03 |
| Protein (g) | 67.8 | 60.0 | 62.4 | 61.3 | -0.06 | -0.06 |
| % energy | 14.5 | 13.3 | 13.2 | 14.0 | -0.06 | -0.06 |
| Total fat (g) | 72.6 | 72.5 | 70.8 | 72.3 | -0.01 | 0.02 |
| % energy | 41.1 | 40.9 | 39.5 | 40.2 | 0.00 | 0.00 |
| SFA (g) | 19.3 | 19.6 | 19.4 | 18.3 | -0.05 | -0.05 |
| % energy | 11.7 | 11.6 | 11.7 | 11.0 | -0.04 | -0.05 |
| PUFA (g) | 8.8 | 9.2 | 8.8 | 8.7 | 0.00 | 0.03 |
| % energy | 5.4 | 5.5 | 5.3 | 5.2 | 0.01 | 0.01 |
| MUFA (g) | 30.1 | 33.0 | 31.6 | 33.7 | 0.09 | 0.123 |
| % energy | 18.4 | 19.6 | 18.9 | 20.6 | 0.13 3 | 0.123 |
| Trans FA (g) | 1.4 | 1.3 | 1.5 | 1.1 | -0.08 | -0.07 |
| n-6 FA (g) | 8.8 | 8.0 | 8.3 | 7.4 | -0.05 | -0.02 |
| n-3 FA (g) | 0.9 | 0.7 | 0.8 | 0.6 | -0.05 | -0.03 |
| Cholesterol (mg) | 192.4 | 170.2 | 206.1 | 166.3 | -0.04 | -0.03 |
| Fibre (g) | 13.5 | 16.3 | 18.1 | 18.0 | 0.174 | 0.205 |
| Calcium (mg) | 549.5 | 622.9 | 648.3 | 697.1 | 0.103 | 0.143 |
| Iron (mg) | 10.6 | 10.5 | 11.6 | 11.2 | 0.04 | 0.08 |
| Magnesium (mg) | 233.7 | 243.5 | 238.8 | 258.7 | 0.04 | 0.103 |
| Phosphorous (mg) | 928.6 | 946.2 | 917.2 | 946.0 | -0.03 | -0.02 |
| Sodium (mg) | 1507 | 1583 | 1678 | 1492 | -0.02 | 0.01 |
| Potassium (mg) | 2289 | 2191 | 2185 | 2565 | 0.08 | 0.09 |
| Folate (μg) | 187.8 | 211.1 | 220.9 | 232.5 | 0.113 | 0.144 |
| Niacin (mg) | 13.3 | 13.1 | 14.0 | 12.7 | -0.03 | 0.01 |
| Vitamin A (μg) | 538.1 | 546.6 | 768.3 | 1011 | 0.235 | 0.235 |
| Vitamin E (mg) | 6.1 | 7.0 | 7.0 | 7.6 | 0.154 | 0.154 |
| Vitamin C (mg) | 75.5 | 80.9 | 93.4 | 133.4 | 0.225 | 0.215 |
| Vitamin B1 (mg) | 1.2 | 1.3 | 1.4 | 1.4 | 0.09 | 0.133 |
| Vitamin B2 (mg) | 1.2 | 1.3 | 1.4 | 1.4 | 0.04 | 0.06 |
| Vitamin B6 (mg) | 1.3 | 1.3 | 1.3 | 1.5 | 0.09 | 0.123 |
| Vitamin B12 (μg) | 4.0 | 3.1 | 4.0 | 3.0 | -0.03 | -0.03 |
1 Partial correlation coefficient between intakes of nutrients and serum folate concentrations (all log transformed) controlling for age and gender.
2 Partial correlation coefficient between intakes of nutrients and serum folate concentrations (all log transformed) controlling for age, gender, district of residence, body mass index, energy intake, consumption of tobacco, coffee, and alcohol.
3 p < 0.05
4 p < 0.01
5 p < 0.001