Table 4 Results of multivariate logistic regression analysis (n = 523)

Gender (ref: female)

 Male

-0.307

0.774

0.735

0.161 ± 3.350

0.691

-0.655

0.643

0.520

0.147 ± 1.832

0.308

Age (ref: > 40)

 20–30

-1.229

1.020

0.293

0.040 ± 2.163

0.229

-0.532

0.930

0.587

0.095 ± 3.636

0.567

 31–40

-1.509

0.949

0.221

0.034 ± 1.419

0.112

-0.470

0.881

0.625

0.111 ± 3.516

0.594

Education (ref: bachelor’s degree or above)

 College degree

-0.363

0.328

0.696

0.366 ± 1.322

0.268

-0.637

0.276

0.529

0.308 ± 0.907

0.021

Title (ref: nurse in charge and above)

 Primary nurse

-0.163

0.701

0.850

0.215 ± 3.360

0.817

-0.324

0.562

0.723

0.240 ± 2.174

0.564

 Senior nurse

0.076

0.522

1.079

0.388 ± 3.001

0.885

0.091

0.412

1.095

0.489 ± 2.454

0.826

Years of nursing work (ref: > 15)

 1–5

-1.179

1.023

0.308

0.041 ± 2.283

0.249

-0.076

0.881

0.926

0.165 ± 5.210

0.931

 6–10

-0.413

0.928

0.662

0.107 ± 4.078

0.656

-0.161

0.810

0.852

0.174 ± 4.162

0.843

 11–15

0.145

0.907

1.157

0.196 ± 6.837

0.873

0.058

0.818

1.059

0.213 ± 5.263

0.944

Department (ref: others)

 Internal medicine

0.425

0.487

1.529

0.589 ± 3.971

0.383

0.220

0.403

1.246

0.565 ± 2.745

0.585

 Surgery

0.155

0.576

1.168

0.378 ± 3.611

0.788

0.218

0.469

1.244

0.497 ± 3.117

0.641

 ICU/operating room/emergency department

1.084

0.621

2.957

0.875 ± 9.995

0.081

0.839

0.532

2.313

0.815 ± 6.565

0.115

Days of night shift monthly (ref: ≥ 8)

 0

1.214

0.609

3.365

1.020 ± 11.100

0.046

1.426

0.515

4.162

1.516 ± 11.422

0.006

 1–7

0.481

0.351

1.617

0.813 ± 3.216

0.170

0.489

0.287

1.631

0.929 ± 2.864

0.089

Monthly income (CNY) (ref: > 7000)

 2000–3000

1.902

0.605

6.702

2.048 ± 21.932

0.002

0.167

0.538

1.182

0.412 ± 3.391

0.756

 3001–5000

-1.219

0.546

0.296

0.101 ± 0.863

0.026

-0.816

0.424

0.442

0.192 ± 1.016

0.054

 5001–7000

0.487

0.545

1.628

0.559 ± 4.738

0.371

-0.441

0.455

0.643

0.264 ± 1.570

0.333