Table 2.
Calcium and Vitamin D intake and serum 25-OH-Vitamin D3 and PTH by age group.
| Age group | ||||||||
|---|---|---|---|---|---|---|---|---|
| 65–69 (n = 45) | 70–74 (n = 81) | 75–80 (n = 52) | >80 (n = 21) | |||||
| Mean (SD) | Range | Mean (SD) | Range | Mean (SD) | Range | Mean | Min | |
| Calcium intake (mg/day) | 663.58 (466.13) | 112.00–2457.00 | 488.30 (305.53) | 125.00–1367.00 | 501.22 (318.55) | 120.00–1452.00 | 527.00 (327.84) | 146.00–1283.00 |
| Vitamin D intake (µg/day) | 5.47 (7.73) | 0.02–43.7 | 3.54 (3.50) | 0.16–16.5 | 3.45 (3.16) | 0.11–30.4 | 3.04 (3.37) | 0.00–10.4 |
| Serum 25-OH-Vitamin D3 (ng/mL) | 43.13 (16.63) | 11.00–82.00 | 44.21 (17.69) | 8.00–119.00 | 42.98 (21.07) | 5.00–105.00 | 38.61 (13.45) | 20.00–65.00 |
| Serum PTH (ng/mL) | 50.73 (26.64) | 17.70–164.70 | 46.61(22.73) | 14.20–52.11 | 52.11 (28.34) | 2.50–189.10 | 52.70 (22.70) | 20.00–97.90 |
SI conversions: To convert serum 25-OH-Vitamin D3 to nmol/L, multiply by 2.496; Calcium intake 65–69 vs. 70–74 p = 0.048, calculated by ANOVA with Bonferroni adjustment.