Table 3 Results of the logistic regression

Age

− 0.080

0.035

0.023

0.033

0.035

0.346

− 0.020

0.027

0.454

Gender

− 1.518

0.642

0.018

− 0.856

0.763

0.262

− 0.005

0.588

0.993

History of anti-osteoporosis treatment

− 1.635

0.848

0.054

0.497

0.991

0.616

0.132

0.763

0.863

BMI

− 0.027

0.067

0.687

0.012

0.077

0.877

− 0.144

0.071

0.042

Diagnosis 1 (transform into dummy variable)

1.687

1.016

0.097

0.934

1.006

0.353

0.805

0.847

0.342

Diagnosis 2 (transform into dummy variable)

− 1.198

0.989

0.226

− 1.949

1.031

0.059

− 1.420

0.892

0.111

Diagnosis 3 (transform into dummy variable)

− 1.220

0.659

0.064

− 0.685

0.772

0.375

− 1.532

0.658

0.02

MNA-SF score

0.499

0.364

0.170

− 0.148

0.397

0.709

− 0.097

0.320

0.762

Preoperative lumbar BMD

− 2.910

2.819

0.302

2.483

3.061

0.417

0.719

2.512

0.775

Preoperative hip BMD

− 1.197

2.604

0.646

− 8.550

3.124

0.006

− 3.161

2.275

0.165

Serum ALP

− 0.017

0.013

0.180

− 0.001

0.015

0.949

− 0.018

0.012

0.154

Serum Ca

− 4.608

2.922

0.115

− 0.849

3.065

0.782

0.107

2.624

0.967

Preoperative Harris score

0.010

0.018

0.569

0.044

0.020

0.030

0.005

0.017

0.751

Implant design of femoral component

0.136

0.750

0.857

0.277

0.739

0.708

1.655

0.768

0.031

BMD of ROI 1 at 1 week after THA

7.012

2.715

0.010

/

/

/

/

/

/

BMD of ROI 7 at 1 week after THA

/

/

/

10.658

2.389

< 0.001

/

/

/

BMD of ROI total at 1 week after THA

/

/

/

/

/

/

5.705

2.461

0.020