Table 3 Univariate logistic regression analysis of respondents (n = 2617)

 31–40

0.158

0.151

1.101

1

0.294

1.172

 41–50

−0.181

0.163

1.239

1

0.266

0.835

 51+

−0.651

0.251

6.742

1

0.009

0.522

 Gender: female

0.184

0.115

2.541

1

0.111

1.202

 Education level (contrast = college degree or below)

9.751

3

0.021

 Education level: bachelor

0.303

0.172

3.101

1

0.078

1.354

 Education level: master

0.605

0.197

9.450

1

0.002

1.832

 Education level: doctor

0.288

0.231

1.553

1

0.213

1.333

 Professional title (contrast = without professional title)

14.969

4

0.005

 Professional title: resident doctor

0.422

0.199

4.488

1

0.034

1.525

 Professional title: attending physician

0.383

0.182

4.453

1

0.035

1.467

 Professional title: associate chief physician

0.474

0.200

5.609

1

0.018

1.606

 Professional title: chief physician

−0.132

0.216

0.371

1

0.542

0.877

 Martial status (contrast = unmarried)

5.958

2

0.051

 Martial status: married

−0.370

0.176

4.411

1

0.036

0.691

 Martial status: divorce or loss of spouse

0.211

0.458

0.213

1

0.644

1.235

 Hospital level (contrast = tertiary hospitals)

2.993

2

0.224

 Hospital level: second-class hospital

−0.175

0.127

1.914

1

0.167

0.839

 Hospital level: primary hospital

−0.302

0.239

1.588

1

0.208

0.740

 Daily working hours

0.234

0.068

11.942

1

0.001

1.264