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Table 13 DIF item analysis to identify subgroup invariance among training courses at the item level

From: Developing and validating an online situational judgment test on the stress coping competence of nursing apprentices

Item

Estimate

(Nursing specialist)

Standard error

Estimate

(Geriatric nursing)

Standard error

Estimate

(Clinical nursing)

BK1111

− 0.094

0.137

0.030

0.109

0.064a

BK1112

− 0.009

0.194

− 0.107

0.146

0.117a

BK1113

0.008

0.133

0.035

0.109

− 0.043a

BK1114

0.076

0.139

− 0.068

0.105

− 0.008a

BK1115

− 0.049

0.133

0.078

0.108

− 0.030a

BK1116

− 0.067

0.124

0.032

0.101

0.035a

BK1131

0.042

0.157

− 0.02

0.118

− 0.021a

BK1132

− 0.124

0.129

− 0.048

0.101

0.173a

BK1133

− 0.015

0.220

0.389

0.186

− 0.373a

BK1141

0.251

0.162

0.004

0.118

− 0.255a

BK1142

0.036

0.132

− 0.022

0.102

− 0.014a

BK1143

− 0.204

0.158

0.102

0.119

0.101a

BK1212

− 0.559

0.195

0.435

0.166

0.124a

BK1213

− 0.058

0.150

0.094

0.124

− 0.037a

BK1221

0.004

0.179

− 0.092

0.137

0.088a

BK1222

− 0.150

0.152

− 0.083

0.124

0.233a

BK1223

0.060

0.128

0.080

0.100

− 0.139a

BK1225

− 0.019

0.136

− 0.068

0.105

0.088a

BK1231

− 0.187

0.133

− 0.053

0.107

0.239a

BK1232

− 0.009

0.139

− 0.125

0.108

0.135a

BK1233

0.142

0.162

− 0.044

0.121

− 0.098a

BK1341

0.172

0.175

− 0.087

0.126

− 0.086a

BK1342

0.134

0.153

− 0.135

0.112

0.001a

BK1343

− 0.040

0.129

− 0.129

0.103

0.169a

BK1351

− 0.066

0.179

0.086

0.149

− 0.020a

BK1352

0.138

0.141

− 0.112

0.106

− 0.026a

BK1353

0.138

0.149

0.074

0.115

− 0.212a

BK14241

− 0.100

0.131

0.061

0.106

0.039a

BK14243

0.262

0.127

0.018

0.099

− 0.279a

BK14244

0.287a

 

− 0.325a

 

0.038a

  1. Separation Reliability = 0.118; Chi-square test of parameter equality = 51.29, df = 58, Sig. = 0.721
  2. Significant values are printed in bold
  3. a The item parameters were fixed to zero as part of the item analysis. One parameter is fixed by ConQuest by default for model identification purposes