Table 6.
Bone density and mercury dietary intake in premenopausal women.
| Variable (Units) | Low (<9.55 μg/day) | High (>9.55 μg/day) | p-Value | p-Value * |
|---|---|---|---|---|
| Median (IQR) (n = 80) | Median (IQR) (n = 78) | |||
| Quantitative bone ultrasound | ||||
| Ad-SoS (m/s) | 2126 (2092.5–2145) | 2131 (2092–2166) | 0.360 | 0.361 |
| Ultrasound bone profiler index (UBPI) | 0.78 (0.69–0.84) | 0.78 (0.71–0.85) | 0.882 | 0.794 |
| Bone transmission time (BTT) (μs) | 1.60 (1.52–1.65) | 1.60 (1.55–1.72) | 0.057 | 0.059 |
| Bone mineral density (g/cm2) | ||||
| BMD Femoral neck | 0.893 (0.834–1.005) | 0.889 (0.824–0.969) | 0.390 | 0.323 |
| BMD Femoral trochanter | 0.680 (0.633–0.753) | 0.684 (0.611–0.775) | 0.951 | 0.863 |
| BMD Ward’s triangle | 0.706 (0.624–0.806) | 0.687 (0.616–0.785) | 0.595 | 0.665 |
| BMD L2 | 1.109 (1.017–1.187) | 1.096 (1.006–1.169) | 0.536 | 0.683 |
| BMD L3 | 1.101 (1.020–1.188) | 1.101 (1.014–1.183) | 0.736 | 0.785 |
| BMD L4 | 1.059 (0.980–1.148) | 1.038 (0.972–1.128) | 0.397 | 0.568 |
| BMD lumbar spine | 1.097 (1.012–1.175) | 1.076 (0.997–1.153) | 0.522 | 0.586 |
| Volumetric BMD (mg/cm3) | ||||
| Total density | 359.3 (318.85–388.95) | 350.25 (328.-389.4) | 0.832 | 0.551 |
| Trabecular density | 178.3 (159.35–208.7) | 174.55 (153.4–197.8) | 0.461 | 0.795 |
| Cortical density | 499.65 (449.15–555.8) | 496.2 (460–553.2) | 0.675 | 0.506 |
| Bone morphometry (mm2) | ||||
| Total area | 283.4 (265.95–311.05) | 294.3 (267.3–324.1) | 0.189 | 0.345 |
| Trabecular area | 127.4 (119.55–141.35) | 132.3 (120.1–145.5) | 0.278 | 0.618 |
| Cortical area | 155.9 (146.4–171.25) | 162.05 (147.2–178.6) | 0.237 | 0.467 |
* After further adjustment for energy intake (kcal/day). (kcal/day) was considered a covariate.