Table 3 Adjusted association between masticatory difficulty and bone mineral density

Male

Total hip aBMD

 Odd ratio (95% CI)

2.781 (1.511–5.117)

1.177 (0.548–2.528)

1.186 (0.374–3.762)

0.419 (0.170–1.030)

 B ± SE

1.023 ± 0.310

0.163 ± 0.389

0.171 ± 0.587

− 0.871 ± 0.458

P value

 < 0.001**

0.675

0.771

0.058

R square (Nagelkereke)

0.006

0.016

0.058

0.164

Femoral neck aBMD

 Odd ratio (95% CI)

3.259 (1.711–6.205)

1.410 (0.651–3.054)

1.024 (0.356–4.072)

0.554 (0.223–1.376)

 B ± SE

1.181 ± 0.327

0.344 ± 0.393

0.186 ± 0.619

− 0.591 ± 0.463

 P value

 < 0.001**

0.382

0.764

0.202

 R square (Nagelkereke)

0.007

0.016

0.058

0.163

Lumbar spine aBMD

 Odd ratio (95% CI)

1.727 (1.022–2.918)

1.189 (0.666–2.122)

1.096 (0.474–2.535)

0.651 (0.301–1.409)

 B ± SE

0.546 ± 0.267

0.173 ± 0.294

0.092 ± 0.426

− 0.430 ± 0.393

 P value

0.041*

0.557

0.829

0.275

 R square (Nagelkereke)

0.002

0.013

0.057

0.159

Female

Total hip aBMD

 Odd ratio (95% CI)

15.9 (8.1–31.4)

2.729 (1.083–6.877)

4.848 (1.084–21.686)

3.788 (0.810–17.717)

 B ± SE

2.767 ± 0.345

1.004 ± 0.470

1.579 ± 0.762

1.332 ± 0.784

 P value

 < 0.001**

0.033*

0.039*

0.090

 R square (Nagelkereke)

0.038

0.069

0.085

0.134

Femoral neck aBMD

 Odd ratio (95% CI)

29.615(13.964–62.806)

4.808 (1.757–13.161)

9.477 (1.883–47.698)

6.644 (1.207–36.560)

 B ± SE

3.388 ± 0.382

1.570 ± 0.512

2.249 ± 0.822

1.727 ± 0.852

 P value

 < 0.001**

0.002*

0.007*

0.030*

 R square (Nagelkereke)

0.047

0.071

0.089

0.137

Lumbar spine aBMD

 Odd ratio (95% CI)

7.313 (4.129–12.953)

2.462 (1.270–4.774)

1.923 (0.784–4.716)

0.999 (0.374–2.666)

 B ± SE

1.990 ± 0.291

0.901 ± 0.337

0.654 ± 0.456

− 0.001 ± 0.027

 P value

 < 0.001**

0.008*

0.153

0.998

 R square (Nagelkereke)

0.027

0.063

0.075

0.125