Caro-Bautista, JorgeRodríguez-Blázquez, CarmenPerez-Manchon, DavidTimonet-Andreu, EvaCarvajal-Carrascal, GloriaFuentes-Ramírez, AlejandraCorchon, SilviaAranda-Gallardo, MartaAmbrosio, Leire2023-01-112023-01-112021-03-17Caro-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):93http://hdl.handle.net/10668/4568Background Worldwide, 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. Methods In 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. Results The 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. Conclusions The 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.enAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/Long-term conditionType 2 diabetes mellitusChronic illnessStudy validationCOSMINPsychometricColombiaSpainDiabetes mellitus tipo 2Enfermedad crónicaEstudio de validaciónPsicometríaEspañaMedical Subject Headings::Persons::Persons::Age Groups::AdultMedical Subject Headings::Geographical Locations::Geographic Locations::Americas::South America::ColombiaMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Study Characteristics as Topic::Epidemiologic Studies::Cross-Sectional StudiesMedical Subject Headings::Diseases::Endocrine System Diseases::Diabetes Mellitus::Diabetes Mellitus, Type 2Medical Subject Headings::Check Tags::FemaleMedical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::HumansMedical Subject Headings::Check Tags::MaleMedical Subject Headings::Persons::Persons::Age Groups::Adult::Middle AgedMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Research Design::Reproducibility of ResultsMedical Subject Headings::Geographical Locations::Geographic Locations::Europe::SpainMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Data Collection::QuestionnairesMedical Subject Headings::Anthropology, Education, Sociology and Social Phenomena::Social Sciences::Quality of LifeMedical Subject Headings::Psychiatry and Psychology::Behavioral Disciplines and Activities::Psychological Tests::PsychometricsMedical Subject Headings::Persons::Persons::Patients::OutpatientsMedical Subject Headings::Health Care::Health Care Quality, Access, and Evaluation::Quality of Health Care::Health Care Evaluation Mechanisms::Data Collection::ChecklistMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Study Characteristics as Topic::Feasibility StudiesMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Factor Analysis, StatisticalMedical Subject Headings::Psychiatry and Psychology::Behavior and Behavior Mechanisms::Behavior::Personal SatisfactionMedical Subject Headings::Health Care::Health Services Administration::Organization and Administration::Professional Practice::Referral and Consultationresearch article33731142open access10.1186/s12955-021-01715-x1477-7525PMC7972215