10.6084/m9.figshare.c.3841153_D6.v1 Baptiste Couvy-Duchesne Baptiste Couvy-Duchesne Tracey Davenport Tracey Davenport Nicholas Martin Nicholas Martin Margaret Wright Margaret Wright Ian Hickie Ian Hickie Additional file 15: of Validation and psychometric properties of the Somatic and Psychological HEalth REport (SPHERE) in a young Australian-based population sample using non-parametric item response theory Springer Nature 2017 Depression Anxiety Chronic fatigue Non-parametric item response theory Test-retest Psychometrics DSM-IV Heritability Twins 2017-08-01 05:00:00 Figure https://springernature.figshare.com/articles/figure/Additional_file_15_of_Validation_and_psychometric_properties_of_the_Somatic_and_Psychological_HEalth_REport_SPHERE_in_a_young_Australian-based_population_sample_using_non-parametric_item_response_theory/5267206 Sex DIF for the 11 items of the chronic fatigue scale (TW1 wave). (PNG 1370 kb)