Table 2 Bone mineral density, number of teeth, DMFT, periodontal status, and hormonal levels according to masticatory difficulty
From: Relationship between skeletal bone mineral density and subjective masticatory difficulty
| Â | Â | Masticatory difficulty | P value | |||
|---|---|---|---|---|---|---|
Variable | Total N | No | Yes | |||
N | Mean ± SE or % (95% CI) | N | Mean ± SE or % (95% CI) | |||
Male | ||||||
 Number of teeth | 3242 | 1907 (58.2%) | 12.8 ± 0.4 | 1355 (41.8%) | 12.3 ± 0.5 | 0.382 |
 DMFT | 3234 | 1886 (58.2%) | 5.93 ± 0.17 | 1348 (41.8%) | 5.88 ± 0.21 | 0.858 |
CPI | 2340 | Â | Â | Â | Â | 0.516 |
 0 | 304 | 23.7 (19.2–28.9) | 238 | 24.9 (19.5–31.1) | ||
 1 | 60 | 4.9 (3.0–7.8) | 41 | 5.5 (3.2–9.4) | ||
 2 | 415 | 29.0 (24.5–34.0) | 242 | 23.9 (19.4–29.1) | ||
 3 | 477 | 35.6 (30.7–40.8) | 370 | 38.2 (32.5–44.3) | ||
 4 | 118 | 6.9 (4.6–10.1) | 75 | 7.4 (3.7–14.5) | ||
Total hip aBMD (g/cm2) | 2762 | 1570 (58.2%) | 0.930 ± 0.004 | 1192 (41.8%) | 0.910 ± 0.005 |  < 0.001** |
Total hip T score | 2762 | 1570 (58.2%) | − 0.090 ± 0.028 | 1192 (41.8%) | − 0.220 ± 0.035 |  < 0.001** |
Femoral neck aBMD (g/cm2) | 2762 | 1570 (58.2%) | 0.750 ± 0.004 | 1192 (41.8%) | 0.730 ± 0.004 |  < 0.001** |
Femoral neck T score | 2762 | 1570 (58.2%) | − 0.800 ± 0.030 | 1192 (41.8%) | − 0.940 ± 0.035 |  < 0.001** |
Lumbar spine aBMD (g/cm2) | 2690 | 1537 (58.3%) | 0.940 ± 0.004 | 1153 (41/7%) | 0.930 ± 0.006 | 0.040* |
Lumbar spine T score | 2690 | 1537 (58.3%) | − 0.680 ± 0.037 | 1153 (41.7%) | − 0.790 ± 0.049 | 0.040* |
Lean body mass (kg) | 2698 | 1536 (58.2%) | 50.6 ± 0.2 | 1162 (41.8%) | 49.4 ± 0.3 |  < 0.001** |
Female | ||||||
 Number of teeth | 4373 | 2596 (60.0%) | 12.5 ± 0.4 | 1777 (40.0%) | 12.1 ± 0.5 | 0.449 |
 DMFT | 4351 | 2570 (59.7%) | 5.82 ± 0.16 | 1781 (40.3%) | 6.00 ± 0.21 | 0.436 |
CPI†| 3043 |  |  |  |  | 0.053 |
 0 | 408 | 21.7 (17.4–26.6) | 333 | 24.3 (18.9–30.7) | ||
 1 | 75 | 3.7 (2.4–5.7) | 78 | 6.2 (3.9–9.5) | ||
 2 | 548 | 30.2 (25.5–35.4) | 286 | 24.7 (20.0–30.1) | ||
 3 | 630 | 34.6 (29.4–40.2) | 443 | 35.9 (30.2–42.0) | ||
 4 | 151 | 9.8 (6.4–14.9) | 91 | 8.9 (5.5–14.1) | ||
Total hip aBMD (g/cm2) | 3749 | 2126 (55.7%) | 0.800 ± 0.003 | 1623 (44.3%) | 0.750 ± 0.004 |  < 0.001** |
Total hip T score | 3749 | 2126 (55.7%) | − 0.470 ± 0.029 | 1623 (44.3%) | − 0.840 ± 0.039 |  < 0.001** |
Femoral neck aBMD (g/cm2) | 3749 | 2126 (55.7%) | 0.640 ± 0.003 | 1623 (44.3%) | 0.600 ± 0.004 |  < 0.001** |
Femoral neck T score | 3749 | 2126 | − 1.48 ± 0.03 | 1623 | − 1.89 ± 0.04 |  < 0.001** |
Lumbar spine aBMD (g/cm2) | 3645 | 2075 (56.0%) | 0.830 ± 0.004 | 1570 (44.0%) | 0.780 ± 0.005 |  < 0.001** |
Lumbar spine T score | 3645 | 2075 (56.0%) | − 1.56 ± 0.04 | 1570 (44.0%) | − 1.93 ± 0.04 |  < 0.001** |
Lean body mass (kg) | 3679 | 2087 (55.7%) | 37.0 ± 0.1 | 1592 (44.3%) | 36.3 ± 0.2 |  < 0.001** |