Abstract
Objetivo
Evaluar la validez de constructo de un instrumento para medir el estilo de vida en los pacientes con diabetes mellitus tipo 2 (cuestionario IMEVID)
Diseño
Estudio observacional transversal comparativo
Emplazamiento
Seis unidades de medicina familiar (atención primaria)
Participantes
Un total de 412 adultos con diabetes mellitus tipo 2
Mediciones principales
Se aplicó el IMEVID por autoadministración y se midió el índice de masa corporal (IMC), índice cintura/cadera (ICC), hemoglobina glucosilada (HbA1C), colesterol total (CT), triglicéridos (TG), presión arterial (PA) y glucemia en ayunas (GA). El constructo hipotético de prueba fue que las mayores calificaciones totales en el IMEVID (mejor estilo de vida) estarían asociadas a valores menores de estas variables clínicas. Se dividió a los sujetos en tres grupos según su calificación total: grupo uno (< cuartil 25), grupo dos (cuartil 25-75), grupo tres (> cuartil 75) y se buscaron diferencias intergrupo en los valores de los parámetros medidos
Resultados
Completaron el estudio 389 sujetos, y un 69,2% eran mujeres. Siete dimensiones del IMEVID tuvieron correlaciones débiles al menos con dos de los ocho parámetros (r, –0,22 a 0,16; p≤0,05). La calificación total se correlacionó con seis de ocho parámetros (r, –0,18 a 0,10; p≤0,05). Los sujetos del grupo tres tuvieron valores menores de IMC, ICC, HbA1C, GA, CT y TGL que los del grupo 1 (p<0,05)
Conclusiones
El IMEVID tiene validez de constructo para medir el estilo de vida en los sujetos con diabetes tipo 2. Su calificación total discrimina las características clínicamente relevantes
Palabras clave: Diabetes mellitus tipo 2, Estilo de vida, Cuestionarios
Abstract
Objective
To evaluate construct validity of an instrument to measure lifestyle in patients with type 2 diabetes mellitus (IMEVID questionnaire)
Design
Comparative cross-sectional study
Setting
Six family medicine units (primary care)
Patients
412 adults with type 2 diabetes
Measurements
The IMEVID was applied by self-administration and the following metabolic control parameters values were measured: body mass index (BMI), waist/hip index (WHI), hemoglobin A1C (HbA1C), total cholesterol (TC), triglycerides (TG), systolic blood pressure (SBP), diastolic blood pressure (DBP), and the average of fasting plasma glucose in the last three months (FG). The test hypothetic construct was that higher total scores in the IMEVID (better lifestyle) would be associated with lower values in the metabolic control parameters. Three groups of subjects were formed based on the total score: group one (<cuartil 25), group two (among cuartil 25 and 75) and group three (>cuartil 75). Differences on these parameters between groups were researched
Results
389 subjects completed the study, 69,2% were women. Seven IMEVID domains had weak correlations at least with two of eight parameters (r between –0.22 and 0.16; P≤.05). The total score had correlation with six of eight parameter (r between –0.18 and 0.10; P≤.05). The group three subjects had lower levels of BMI,WHI, HbA1C, FG,TC and TGL than group one subjects (P≤.05)
Conclusions
IMEVID has construct validity to measure the lifestyle in subjects with DM2. Its total score discriminates outstanding clinical characteristics in these patients
keywords: Type 2 diabetes mellitus, Lifestyle, Questionnaires
Investigación realizada con apoyo financiero número FP-2001/200 otorgado por la Coordinación de Investigación en Salud del Instituto Mexicano del Seguro Social
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