Forskning
Udskriv Udskriv
Switch language
Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

Detection of illness worry in the general population: A specific item on illness rumination improves the Whiteley Index

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. Self-reported health status and the associated risk of mortality in heart failure: The DANISH trial

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Mental health is a risk factor for poor outcomes in cardiac patients: Findings from the national DenHeart survey

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. The construct validity of the Major Depression Inventory: A Rasch analysis of a self-rating scale in primary care

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. DenHeart: Differences in physical and mental health across cardiac diagnoses at hospital discharge

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  1. The Duffy-null genotype and risk of infection

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  2. Cardiac Troponin I and Incident Stroke in European Cohorts: Insights From the BiomarCaRE Project

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  3. Psychiatric comorbidity in individuals with bullous pemphigoid and all bullous disorders in the Danish national registers

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

  4. Response to Letter to the Editor: A misleading CFS prevalence estimate in DanFunD

    Publikation: Bidrag til tidsskriftKommentar/debatForskning

Vis graf over relationer

OBJECTIVE: The Whiteley Index (WI) is the most widely used screening tool for health anxiety/illness worry. Diverse versions (different number of items and factors) have been used. We aimed to examine psychometric properties of 7 items of the WI besides adding a new item on obsessive illness rumination for better future detection of health anxiety.

METHODS: Data from a large population-based study in Denmark (N = 9656). Construct validity was examined by exploratory (EFA) and confirmatory factor analysis (CFA) plus hypothesis testing. Criterion validity was evaluated via Receiver Operating Characteristic curves and area under the curve (AUC) using a diagnostic criterion as gold standard.

RESULTS: Factor loadings of EFA revealed viable one-factor models (6, 7, or 8 items) and two-factor models (7 or 8 items). Factor one indicated a dimension of illness worry. Factor two indicated a somatic symptoms dimension. The new item on obsessive illness rumination merged well with the existing items. EFA of two-factor models and one-factor 6-item model showed good fit. CFA resembles these findings. A one-factor 6-item model (including the item on obsessive illness rumination and excluding two items concerning somatic symptoms) was chosen as the optimal model and presented good criterion validity: AUC 0.88 (95%CI(0.84;0.92)). Main hypotheses concerning associations with somatic symptoms, anxiety, and depression were met.

CONCLUSIONS: We found good psychometric properties for a new one-factor 6-item version of the WI. Through elimination of items concerning somatic symptoms and inclusion of obsessive illness rumination, we propose a clear, unidimensional and improved measure of illness worry: Whiteley-6-R.

OriginalsprogEngelsk
TidsskriftJournal of Psychosomatic Research
Vol/bind138
Sider (fra-til)110245
ISSN0022-3999
DOI
StatusUdgivet - nov. 2020

Bibliografisk note

Copyright © 2020 Elsevier Inc. All rights reserved.

ID: 60906190