Table 2 The associations between weight-adjusted-waist index and bone mineral density
Exposure | Model 1 [β (95% CI)] | Model 2 [β (95% CI)] | Model 3 [β (95% CI)] |
|---|---|---|---|
Lumbar BMD (continuous) | -0.04 (-0.04, -0.04) | -0.06 (-0.06, -0.05) | -0.03 (-0.04, -0.01) |
Lumbar BMD (quartile) | |||
 Quartile 1 | reference | reference | reference |
 Quartile 2 | -0.04 (-0.04, -0.03) | -0.05 (-0.05, -0.04) | -0.05 (-0.08, -0.02) |
 Quartile 3 | -0.06 (-0.07, -0.05) | -0.07 (-0.08, -0.07) | -0.07 (-0.10, -0.04) |
 Quartile 4 | -0.08 (-0.08, -0.07) | -0.10 (-0.11, -0.10) | -0.08 (-0.11, -0.04) |
P for trend | < 0.001 | < 0.001 | < 0.001 |
Pelvis BMD (continuous) | -0.02 (-0.03, -0.02) | -0.03 (-0.04, -0.03) | -0.04 (-0.06, -0.03) |
Pelvis BMD (quartile) | |||
 Quartile 1 | reference | reference | reference |
 Quartile 2 | 0.01 (0.01, 0.02) | 0.01 (0.00, 0.01) | 0.00 (-0.03, 0.04) |
 Quartile 3 | -0.00 (-0.01, 0.00) | -0.02 (-0.02, -0.01) | -0.03 (-0.06, 0.01) |
 Quartile 4 | -0.07 (-0.07, -0.06) | -0.08 (-0.09, -0.08) | -0.06 (-0.10, -0.03) |
P for trend | < 0.001 | < 0.001 | < 0.001 |
Femoral neck BMD (continuous) | -0.04 (-0.04, -0.04) | -0.03 (-0.04, -0.03) | -0.02 (-0.03, -0.01) |
Femoral neck BMD (quartile) | |||
 Quartile 1 | reference | reference | reference |
 Quartile 2 | -0.03 (-0.03, -0.02) | -0.03 (-0.03, -0.02) | -0.00 (-0.04, 0.03) |
 Quartile 3 | -0.05 (-0.05, -0.04) | -0.04 (-0.05, -0.03) | -0.02 (-0.04, 0.01) |
 Quartile 4 | -0.08 (-0.09, -0.08) | -0.06 (-0.07, -0.06) | -0.03 (-0.05, -0.01) |
P for trend | < 0.001 | < 0.001 | < 0.001 |
Total BMD (continuous) | -0.04 (-0.04, -0.04) | -0.04 (-0.05, -0.04) | -0.02 (-0.03, -0.01) |
Total BMD (quartile) | |||
 Quartile 1 | reference | reference | reference |
 Quartile 2 | -0.02 (-0.02, -0.02) | -0.02 (-0.03, -0.02) | -0.02 (-0.04, 0.00) |
 Quartile 3 | -0.04 (-0.05, -0.04) | -0.05 (-0.05, -0.05) | -0.04 (-0.07, -0.02) |
 Quartile 4 | -0.08 (-0.08, -0.08) | -0.09 (-0.09, -0.08) | -0.05 (-0.07, -0.02) |
P for trend | < 0.001 | < 0.001 | < 0.001 |