RT Journal Article T1 Validation of living with chronic illness scale in a type 2 diabetes mellitus population A1 Caro-Bautista, Jorge A1 Rodríguez-Blázquez, Carmen A1 Perez-Manchon, David A1 Timonet-Andreu, Eva A1 Carvajal-Carrascal, Gloria A1 Fuentes-Ramírez, Alejandra A1 Corchon, Silvia A1 Aranda-Gallardo, Marta A1 Ambrosio, Leire K1 Long-term condition K1 Type 2 diabetes mellitus K1 Chronic illness K1 Study validation K1 COSMIN K1 Psychometric K1 Colombia K1 Spain K1 Diabetes mellitus tipo 2 K1 Enfermedad crónica K1 Estudio de validación K1 Psicometría K1 España AB BackgroundWorldwide, type 2 diabetes mellitus (T2DM) is one of the most prevalent chronic diseases and one of those producing greatest impact on patients’ day-to-day quality of life. Our study aim is to validate the “Living with Chronic Illness Scale” for a Spanish-speaking T2DM population.MethodsIn this observational, international, cross-sectional study, 582 persons with T2DM were recruited in primary care and outpatient hospital consultations, in Spain and Colombia, during the period from May 2018 to June 2019. The properties analysed were feasibility/acceptability, internal consistency, reliability, precision and (structural) content-construct validity including confirmatory factor analysis. The COSMIN checklist was used to assess the methodological/psychometric quality of the instrument.ResultsThe scale had an adequate internal consistency and test retest reliability (Cronbach’s alpha = 0.90; intraclass correlation coefficient = 0.96, respectively). In addition, the instrument is precise (standard error of measurement = 3.34, with values < ½SD = 8.52) and correlates positively with social support (DUFSS) (rs = 0.56), quality of life (WHOQOL-BREF) (rs = 0.51–0.30) and ssatisfaction with life (SLS-6) (rs = 0.50–0.38). The original 26-items version of the scale did not support totally the confirmatory factor analysis. The COSMIN checklist is favourable for all the properties analysed, although weaknesses are detected for structural validity.ConclusionsThe LW-CI-T2DM is a valid, reliable and accurate instrument for use in clinical practice to determine how a person’s life is affected by the presence of diabetes. This instrument correlates well with the associated constructs of social support, quality of life and satisfaction. Additional research is needed to determine how well the questionnaire structure performs when robust factor analysis methods are applied. PB BMC Part of Springer Nature YR 2021 FD 2021-03-17 LK http://hdl.handle.net/10668/4568 UL http://hdl.handle.net/10668/4568 LA en NO Caro-Bautista J, Rodríguez-Blázquez C, Perez-Manchon D, Timonet-Andreu E, Carvajal-Carrascal G, Fuentes-Ramírez A, et al. alidation of living with chronic illness scale in a type 2 diabetes mellitus population. Health Qual Life Outcomes. 2021 Mar 17;19(1):93 DS RISalud RD Apr 17, 2025