Table 4 Estimates of discrimination and difficulty parameters of QLICD-AD(V2.0) based on IRT GRM

GPH1

0.769*

-3.227

-1.074

1.412

3.451

GSO1

0.670*

-3.853

-1.644

0.337

1.326

GPH2

0.897*

-1.381

0.382

2.477

3.752

GSO2

0.610

-6.475

-4.770

-1.177

0.972

GPH3

1.00*

-2.631

-1.426

-0.542

0.996

GS03

0.725

-6.184

-4.852

-0.486

1.461

GPH4

0.673*

-3.132

-1.868

1.380

3.403

GSO4

0.823

-5.08

-3.284

-1.874

-0.575

GPH5

1.378*

-1.544

-0.419

0.401

2.490

GSO5

1.111*

-3.699

-1.808

-0.761

0.264

GPH6

0.407

-12.134

-6.842

-3.986

-3.100

GSO6

0.858*

-1.909

-1.132

-0.126

2.273

GPH7

0.651*

-3.681

-2.411

-1.451

0.132

GSO7

1.320*

-1.453

-0.793

-0.009

1.540

GPH8

0.795

-5.672

-3.129

-2.312

-1.890

GSO8

1.204*

-3.323

-2.161

-0.918

0.058

GPH9

1.266*

-1.453

-0.119

0.650

3.094

AD1

1.035*

-2.433

-1.029

-0.245

1.402

GPS1

0.773*

-3.301

-1.421

0.139

2.076

AD2

0.694

-4.025

-2.471

-0.966

0.789

GPS2

1.261*

-1.730

-0.647

-0.021

2.007

AD3

1.304*

-1.847

-0.984

-0.533

0.958

GPS3

0.346

-6.571

-2.215

2.356

5.072

AD4

1.927*

-1.694

-0.882

-0.077

1.150

GPS4

1.665*

-1.250

-0.251

0.549

2.376

AD5

0.648

-4.103

-2.353

-0.301

2.419

GPS5

1.541*

-1.959

-0.899

-0.354

1.015

AD6

1.487*

-1.342

-0.395

0.264

2.523

GPS6

1.893*

-0.845

-0.246

0.253

1.792

AD7

1.451*

-1.519

-0.204

0.223

2.202

GPS7

1.923*

-1.410

-0.442

0.026

1.630

AD8

0.972*

-2.644

-1.646

-0.816

1.216

GPS8

1.939*

-1.566

-0.741

-0.152

0.978

AD9

1.063*

-2.652

-1.606

-0.687

0.919

GPS9

1.990*

-0.987

-0.183

0.274

1.486

AD10

1.460*

-1.375

-0.678

-0.033

1.109

GPS10

0.875*

-3.018

-1.013

0.329

1.511

AD11

0.716*

-3.494

-1.724

-0.336

1.347

GPS11

1.684*

-2.075

-1.172

-0.366

1.278

AD12

1.130*

-2.903

-1.755

-0.729

0.912