Table 6 Stepwise logistic regression analysis results for factors associated with cancer patients’ attitudes toward biosample donation

to help other people, especially cancer patients

intercept

2.886

0.285

17.923

102.561

1

< 0.001

higher education

1.171

0.533

3.225

4.817

1

0.028

to know my health status

intercept

2.886

0.285

17.923

102.561

1

< 0.001

patients with higher education

-0.711

0.344

0.491

4.276

1

0.039

to receive medical treatment/services

intercept

0.723

0.166

2.060

18.878

1

< 0.001

younger patients

0.603

0.192

1.827

9.888

1

0.002

religious patients

-0.464

0.190

0.629

5.969

1

0.015

to maintain good relations with medical personnel

intercept

0.046

0.135

1.047

0.115

1

0.734

patients with higher education

-1.000

0.182

0.368

30.320

1

< 0.001

blood donors

0.519

0.221

1.680

5.539

1

0.019

to receive financial gratification

intercept

-1.222

0.152

0.295

64.553

1

< 0.001

patients with higher education

-1.066

0.253

0.344

17.778

1

< 0.001

the necessity to repeat examination

intercept

0.345

0.122

1.412

7.953

1

0.005

younger patients

0.376

0.179

1.456

4.435

1

0.035

fear over the safety of the data

intercept

-0.154

0.119

0.857

1.689

1

0.194

non-religious patients

-0.396

0.176

0.673

5.092

1

0.024

it would be against my religious beliefs

intercept

-2.265

0.202

0.104

125.468

1

< 0.001

non-religious patients

-1.469

0.460

0.230

10.200

1

0.001

fear over unethical use of the sample

intercept

-0.595

0.170

0.552

12.316

1

< 0.001

blood donors

0.586

0.216

1.796

7.374

1

0.007

older patients

0.346

0.176

1.414

3.878

1

0.049

fear that they will take more samples than needed

intercept

-1.325

0.166

0.266

63.762

1

< 0.001

patients unaware of family history of genetically determined disease

0.563

0.220

1.755

6.528

1

0.011

family history of genetically determined disease

0.632

0.265

1.880

5.667

1

0.017

fear of being infected with infectious disease

intercept

-0.077

0.118

0.926

0.421

1

0.516

non-religious patients

-0.457

0.175

0.633

6.813

1

0.009

fear over the commercial use of the samples

intercept

0.044

0.143

1.045

0.094

1

0.760

non-religious patients

-0.450

0.177

0.638

6.433

1

0.011

patients with higher education

0.387

0.178

1.473

4.744

1

0.029

fear that the government might have access to the samples

intercept

-0.407

0.131

0.666

9.677

1

0.002

older patients

0.547

0.174

1.729

9.919

1

0.002

blood donors

0.439

0.215

1.551

4.158

1

0.041

fear that insurance companies might have the access to the samples

intercept

-0.315

0.122

0.730

6.668

1

0.001

older patients

0.699

0.174

2.012

16.114

1

< 0.001

fear that employers might have the access to the samples

intercept

-0.436

0.123

0.647

12.460

1

< 0.001

older patients

0.562

0.174

1.755

10.482

1

0.001