0000000001020370
AUTHOR
Carolina Catunda
Item response theory and differential test functioning analysis of the HBSC-Symptom-Checklist across 46 countries
Abstract Background The Symptom Checklist (SCL) developed by the Health Behaviour in School-aged Children (HBSC) study is a non-clinical measure of psychosomatic complaints (e.g., headache and feeling low) that has been used in numerous studies. Several studies have investigated the psychometric characteristics of this scale; however, some psychometric properties remain unclear, among them especially a) dimensionality, b) adequacy of the Graded Response Model (GRM), and c) measurement invariance across countries. Methods Data from 229,906 adolescents aged 11, 13 and 15 from 46 countries that participated in the 2018 HBSC survey were analyzed. Adolescents were selected using representative s…
Additional file 1 of Item response theory and differential test functioning analysis of the HBSC-Symptom-Checklist across 46 countries
Additional file 1: Table A1. Sample size,percent females, mean, and standard deviation of age. Table A2. Distribution of the HBSC-SCL items (1-4). Table A3. Distribution of the HBSC-SCLitems (5-8). Table A4. Goodness offit statistics for the bifactor GRM. Table A5. Bifactor statistical indices. Table A6. Multigroup Model Fit. Table A7.Monte Carlo simulation results: Mean parameter stability. Figure A1. HBSC-SCL bar charts. Figure A2. HBSC-SCL polychoric correlations. Figure A3. Test for local dependency of the unidimensional GRM. Figure A4. Item fit statistics of theunidimensional GRM. Figure A5. Residualplots of the unidimensional GRM for ALB. FigureA6. Residual plots of the unidimensional…