Satoko Nakano, Chiaki Hirano, Kazushi Hotta, Yoshihiko Fujita, Hisako Yanagi
Factors associated with overweight status, obesity, and sedentary behavior in elementary and junior high school students
Physical therapy research
purpose present article summarises characteristics raschs theory providing original metrological model persons measurements properties describing person whole key outcome variables medicine particularly true physical rehabilitation medicine targeting persons interaction outer world variables include independence pain fatigue balance like variables observed behaviours various complexity deemed representative given latent persons property infer quantity usually behaviours items scored ordinally raw scores summed across item lists questionnaires limits flaws scores ie multidimensionality nonlinearity well known yet still dominate measurement medicineconclusions raschs theory statistical analysis scores transformed tested capacity respect fundamental measurement axioms rasch analysis returns linear measure persons property ability items calibrations difficulty concealed raw scores difference persons ability item difficulty determines probability pass response observed discrepancy observed scores ideal measures ie residual invites diagnostic reasoning companion article advanced applications rasch modelling illustrated implications rehabilitationquestionnaires ordinal scores poor approximations measures rasch analysis turns questionnaires scores interval measures provided assumptions respectedthanks rasch analysis accurate measures independence pain fatigue cognitive capacities whole persons variables paramount importance rehabilitation availablethe current work addressed rehabilitation professionals looking introduction interpreting published results based rasch analysisthe first series two present article illustrates common graphic numeric outputs found published papers presenting rasch analysis questionnaires