Open AccessPsychometric properties of a questionnaire to measure adherence to treatment in patients with type 1 diabetes mellitus
Author(s) -
GrauDel Valle Carmen,
MarcoExpósito José Francisco,
Solá Eva,
MontoyaCastilla Inmaculada,
Morillas Carlos,
HernándezMijares Antonio,
Bañuls Celia
Publication year - 2022
Publication title -
nursing open
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.55
H-Index - 12
ISSN - 2054-1058
DOI - 10.1002/nop2.1224
Subject(s) - measure (data warehouse) , type 2 diabetes mellitus , medicine , diabetes mellitus , psychometrics , clinical psychology , physical therapy , psychology , endocrinology , computer science , data mining
Aim To validate the psychometric properties of a questionnaire to measure adherence to treatment among people with type 1 diabetes mellitus and to evaluate its relationship with metabolic control. Design A cross‐sectional study of 167 adult people with type 1 diabetes mellitus recruited from the Endocrinology Service of University Hospital Doctor Peset (Spain). Methods The validity of the content, construct and reliability of the instrument were evaluated and the results correlated with levels of glycosylated haemoglobin. Results The questionnaire was composed of 25 items and 5 dimensions, with a score of 25–150 points and an internal consistency of 0.92, according to Cronbach's coefficient α. The content of validity ratio and the construct (exploratory functional analysis, Kaiser–Meyer–Olkin index and Barlett's spherical test) were adequate. We observed a significant correlation between glycosylated haemoglobin levels and treatment adherence. Conclusion The questionnaire to measure adherence to treatment in type 1 diabetes mellitus is consistent, reliable and valid, showing an excellent association with degree of metabolic control.