Table 2.
Blood and urine markers at baseline (end-of-run-in), end-of-intervention, and difference by dietary pattern.
| Control Diet | Fruit and Vegetable Diet | DASH Diet | ||||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Calcitriol (pg/mL) | ||||||
| run-in | 37.3 | ±10.1 | 37.6 | ±7.8 | 38.5 | ±9.7 |
| intervention | 36.6 | ±10.2 | 36.1 | ±9.6 | 34.5 | ±7.8 |
| difference | −0.7 | ±8.9 | −1.5 | ±7.8 | −4.0 | ±8.6 |
| Parathyroid Hormone, PTH (pg/mL) | ||||||
| run-in | 49.1 | ±20.1 | 44.7 | ±17.4 | 44.6 | ±17.7 |
| intervention | 48.3 | ±20.0 | 46.7 | ±19.4 | 43.6 | ±18.6 |
| difference | −0.9 | ±13.9 | 1.9 | ±17.5 | −1.0 | ±12.8 |
| Ionized Calcium (mg/dL) | ||||||
| run-in | 5.2 | ±0.23 | 5.2 | ±0.23 | 5.2 | ±0.23 |
| intervention | 5.2 | ±0.21 | 5.2 | ±0.22 | 5.2 | ±0.23 |
| difference | −0.0 | ±0.21 | 0.0 | ±0.26 | −0.0 | ±0.23 |
| 24 h Urinary Calcium (mg/24 h) | ||||||
| run-in | 145.6 | ±75.8 | 155.4 | ±77.5 | 149.1 | ±80.1 |
| intervention | 137.5 | ±71.4 | 106.7 | ±66.8 | 144.7 | ±88.7 |
| difference | −8.1 | ±56.4 | −48.7 | ±68.0 | −4.4 | ±77.1 |
| 24 h Urinary Phosphate (mg/24 h) | ||||||
| run-in | 683.0 | ±257.1 | 722.1 | ±243.7 | 717.8 | ±254.9 |
| intervention | 725.7 | ±236.6 | 702.1 | ±249.1 | 835.4 | ±333.3 |
| difference | 61.7 | ±252.0 | −21.0 | ±269.4 | 117.5 | ±272.7 |
Average PTH concentration at baseline among all participants was 46.1 ± 18.5 pg/mL. The mean ± SD change in PTH concentrations from run-in to intervention within each arm is in Table 2. Compared to control or F&V diets, the DASH diet was associated with a non-significant reduction in PTH concentrations (Table 3).