title: Painful Diabetic Neuropathy Anxiety Rasch-Transformed Questionnaire (PART-Q30(©) ).
abstract: The association between painful diabetic neuropathy (PDN) and anxiety has been acknowledged using various anxiety scales capturing various fear entities. It has never been examined whether these generally applied anxiety questionnaires could be pooled to construct one overall anxiety metric. After completion by a cohort of 151 patients with PDN, data obtained from seven generally applied fear scales were stacked (n = 88 items) and subjected to Rasch analyses (pre-PART-Q88) to create the PDN overall Anxiety Questionnaire (PART-Q30(©) ). We subsequently examined the impact of the final constructed PART-Q30(©) on disability and Quality of Life (QoL) using the Rasch-Transformed Pain Disability Index (RT-PDI) and the Norfolk Quality of Life Questionnaire, Diabetic Neuropathy version (RT-Norfolk). The pre-PART-Q88 data did not meet Rasch model's expectations. Through stepwise examination for model fit, disordered thresholds, local dependency and item bias, we succeeded in reducing the data and constructing a 30 items overall anxiety scale (PART-Q30(©) ) that fulfilled all model's expectations, including unidimensionality. An acceptable internal reliability was found (person-separation-index: 0.90). PART-Q30(©) explained 36% of disability and combined with RT-PDI 63% of QoL (assessed with RT-Norfolk).
authors: Adelante Centre of Expertise in Rehabilitation and Audiology, Department of Rehabilitation Medicine, Hoensbroek, The Netherlands.|Department of Rehabilitation Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.|Department of Rehabilitation Medicine, Research School CAPHRI, Maastricht University, Maastricht, The Netherlands.
authors: Charlotte C
authors: CC
authors: Geelen
authors: Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.
authors: Brigitte A
authors: BA
authors: Brouwer
authors: Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands.
authors: Janneke G J
authors: JG
authors: Hoeijmakers
authors: Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands.
authors: Catharina G
authors: CG
authors: Faber
authors: Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands.|Department of Neurology, Spaarne Hospital, Hoofddorp, The Netherlands.
authors: Ingemar S J
authors: IS
authors: Merkies
authors: Adelante Centre of Expertise in Rehabilitation and Audiology, Department of Rehabilitation Medicine, Hoensbroek, The Netherlands.|Department of Rehabilitation Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.|Department of Rehabilitation Medicine, Research School CAPHRI, Maastricht University, Maastricht, The Netherlands.|Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.
authors: Jeanine A
authors: JA
authors: Verbunt
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001007:Anxiety / Q000175:diagnosis* / Q000209:etiology*; D015331:Cohort Studies; D003929:Diabetic Neuropathies / Q000150:complications* / Q000523:psychology*; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D011569:Psychiatric Status Rating Scales; D011788:Quality of Life / Q000523:psychology; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Rasch analyses; anxiety; painful diabetic neuropathy; questionnaire