Table 2 Results of the item selection in Part B and Part C using CTT and IRT

B1-1

0.715

13.724

0.952

0.82

0.617

2.679

0.105

1.208

1.938

3.019

√

B1-2

0.752

13.808

0.951

0.75

0.578

3.015

0.206

1.307

2.036

3.193

√

B1-3

0.790

17.901

0.950

0.99

0.689

2.665

-0.398

0.725

1.577

2.536

√

B1-4

0.821

18.080

0.949

0.82

0.579*

3.306

0.029

1.077

1.786

3.098

×

B1-5

0.782

18.375

0.951

1.07

0.732

2.392

-0.436

0.759

1.403

2.355

√

B1-6

0.768

17.190

0.951

1.04

0.768

2.097

-0.737

0.568

1.495

2.525

√

B1-7

0.758

15.226

0.952

1.07

0.783

2.123

-0.62

0.624

1.433

2.57

√

B1-8

0.825

15.665

0.949

0.84

0.566*

2.783

-0.15

1.078

1.866

2.779

×

B1-9

0.823

18.017

0.949

0.85

0.527*

3.465

-0.12

1.036

1.734

3.09

×

B1-10

0.839

21.069

0.949

0.92

0.575

3.7

-0.231

0.86

1.555

2.494

√

B1-11

0.833

18.171

0.949

0.79

0.572

4.16

0.044

1.039

1.888

2.627

√

B1-12

0.870

21.024

0.948

0.84

0.485*

4.832

-0.076

0.883

1.724

2.903

×

B1-13

0.800

18.875

0.950

0.83

0.485*

3.848

0.009

1.039

1.794

2.492

×

B1-14

0.772

15.359

0.951

0.93

0.491*

3.172

-0.122

0.953

1.679

2.633

×

B2-1

0.823

11.851

0.956

0.64

0.772

3.592

0.606

1.504

2.208

3.041

√

B2-2

0.864

11.953

0.955

0.67

0.786

4.365

0.606

1.386

1.987

2.933

√

B2-3

0.788

14.587

0.961

0.91

0.554

3.379

0.22

1.103

1.746

2.277

√

B2-4

0.822

13.238

0.957

0.74

0.702

4.101

0.396

1.294

2.038

N/A

√

B2-5

0.871

14.369

0.954

0.73

0.771

3.766

0.369

1.338

1.987

2.674

√

B2-6

0.895

15.585

0.953

0.73

0.736

4.842

0.342

1.257

1.892

2.904

√

B2-7

0.903

18.914

0.953

0.70

0.729

5.272

0.282

1.21

2.068

2.874

√

B2-8

0.899

19.329

0.953

0.74

0.694

5.555

0.247

1.142

1.883

2.855

√

B2-9

0.860

15.432

0.955

0.73

0.649

5.133

0.37

1.255

1.825

2.879

√

B2-10

0.890

14.889

0.954

0.67

0.754

6.066

0.491

1.318

2.062

2.823

√

B3-1

0.818

17.901

0.950

1.08

0.663

2.705

-0.182

0.81

1.556

2.548

√

B3-2

0.856

19.612

0.942

0.79

0.608

3.884

0.019

1.051

1.816

N/A

√

B3-3

0.922

20.858

0.934

0.94

0.734

3.679

-0.047

0.903

1.567

2.203

√

B3-4

0.912

22.353

0.936

0.91

0.703

4.076

-0.055

0.889

1.648

2.283

√

B3-5

0.909

22.236

0.936

0.91

0.671

3.821

-0.129

0.847

1.615

2.27

√

B3-6

0.868

21.320

0.942

1.01

0.656

3.3

-0.215

0.849

1.437

2.086

√

B3-7

0.864

20.441

0.941

0.85

0.563

4.126

0.003

0.952

1.726

2.415

√

B4-1

0.842

16.132

0.944

0.80

0.633

4.116

0.32

1.181

1.804

2.971

√

B4-2

0.848

18.127

0.944

0.94

0.638

3.583

0.018

0.973

1.708

2.214

√

B4-3

0.865

16.003

0.943

0.75

0.649

4.957

0.293

1.113

1.829

N/A

√

B4-4

0.861

19.641

0.944

0.98

0.662

3.575

-0.02

0.898

1.509

2.495

√

B4-5

0.868

19.355

0.942

0.93

0.665

3.583

0.001

0.985

1.51

2.707

√

B4-6

0.893

21.234

0.941

0.81

0.648

4.971

0.088

0.986

1.749

2.502

√

B4-7

0.868

19.372

0.943

0.78

0.678

4.334

0.128

1.067

1.812

N/A

√

B4-8

0.848

19.581

0.945

0.98

0.673

4.33

0.037

0.918

1.615

2.568

√

B4-9

0.735

11.899

0.950

0.72

0.587*

3.423

0.44

1.313

2.015

N/A

×

B5-1

0.963

18.816

N/A

0.96

0.592

3.494

-0.093

0.945

1.579

2.334

√

B5-2

0.958

20.200

N/A

0.91

0.644

4.213

0.006

0.917

1.714

2.956

√

B6-1

0.805

14.417

0.892

0.81

0.535*

3.74

0.281

1.181

1.856

3.039

×

B6-2

0.896

16.107

0.845

0.89

0.579

3.868

0.211

1.097

1.792

2.47

√

B6-3

0.899

18.053

0.847

0.98

0.596

3.384

-0.065

0.943

1.615

2.337

√

B6-4

0.882

18.436

0.861

0.99

0.598

2.929

-0.062

0.963

1.617

2.376

√

C1-1

0.630

8.914

0.892

0.92

0.858

0.928

0.321

1.522

3.491

√

C1-2

0.698

10.610

0.880

0.94

0.741

1.137

-0.211

1.145

2.734

√

C1-3

0.849

17.836

0.847

0.97

0.689

2.043

-0.994

0.212

1.373

√

C1-4

0.846

18.095

0.848

1.00

0.832

2.152

-0.975

0.078

1.212

√

C1-5

0.841

19.164

0.849

0.98

0.765

2.18

-0.868

0.248

1.404

√

C1-6

0.873

21.503

0.841

1.01

0.804

2.389

-0.964

0.144

1.109

√

C2-1

0.907

21.905

0.884

0.99

0.771

2.278

-1.38

-0.057

0.801

√

C2-2

0.902

21.563

0.888

1.03

0.790

2.07

-1.279

-0.097

0.835

√

C2-3

0.904

21.999

0.886

1.01

0.788

2.139

-1.275

-0.051

0.87

√

C2-4

0.866

20.001

0.909

1.02

0.755

1.957

-1.482

-0.172

0.695

√

C3-1

0.905

25.563

0.929

1.02

0.610

3.386

-0.981

-0.042

0.808

√

C3-2

0.928

23.058

0.914

0.99

0.541

3.048

-0.94

-0.07

1.035

√

C3-3

0.931

21.936

0.912

0.97

0.575

3.398

-0.979

0.029

1.01

√

C3-4

0.912

21.855

0.922

0.94

0.539

3.138

-1.225

-0.096

0.927

√

C4-1

0.798

21.111

0.960

1.08

0.686

2.504

-0.775

0.082

0.953

√

C4-2

0.840

21.603

0.958

1.01

0.758

2.986

-1.184

-0.208

0.682

√

C4-3

0.837

26.062

0.958

1.03

0.678

3.562

-1.051

-0.16

0.624

√

C4-4

0.824

21.297

0.959

1.03

0.735

2.898

-1.058

-0.144

0.782

√

C4-5

0.862

26.905

0.957

1.03

0.746

3.698

-1.045

-0.137

0.679

√

C4-6

0.828

24.600

0.959

1.03

0.710

3.042

-1.067

-0.165

0.715

√

C4-7

0.887

31.547

0.956

1.02

0.740

4.805

-1.06

-0.192

0.537

√

C4-8

0.895

34.126

0.956

1.05

0.741

5.33

-0.924

-0.176

0.567

√

C4-9

0.872

30.356

0.957

1.03

0.713

4.361

-1.026

-0.181

0.618

√

C4-10

0.876

28.958

0.957

1.00

0.732

4.171

-1.104

-0.246

0.616

√

C4-11

0.830

25.185

0.958

1.01

0.691

3.18

-1.207

-0.225

0.598

√