2003, Number 3
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Rev Med Inst Mex Seguro Soc 2003; 41 (3)
Validity and Consistency of the Fantastic Instrument to Measure Lifestyle in Mexican Patients with Type 2 Diabetes
Rodríguez MR, López CJM, Munguía MC, Hernández SJL, Martínez BM
Language: Spanish
References: 26
Page: 211-220
PDF size: 84.59 Kb.
ABSTRACT
Introduction: The Fantastic questionnaire was designed to help primary-care physicians measure their patients’ life-styles.
Objective: Our objective was to evaluate validity and consistency of the Spanish-language version of the Fantastic questionnaire in Mexican patients with type 2 diabetes.
Material and Methods: A cross-sectional study was done at a family medicine unit. The questionnaire was applied on two different days, with a 21-day test-retest interval to 260 subjects of both genders with type 2 diabetes. Fasting levels of total cholesterol, triglycerides, hemoglobin A1c (Hb A1c), plasma glucose of 3 months, and blood pressure were measured, and body mass index (BMI) and waist/hip index (WHI) were calculated. Differences in these parameters by strata of total scores and correlations among instrument scores and these parameters were sought.
Results: 249 patients completed the study. Test-retest correlation had r = 0.84, p = 0.01. Cronbach alpha were 0.08 to 0.80 for domains and 0.80 in total. Negative correlations were observed between some metabolic parameters and domains as follows: nutrition with triglycerides (r = -0.13, p = 0.05) and BMI (r = -0.57, p = 0.01); family and friends with WHI (r = -0.13, p = 0.05); tobacco and toxins with triglycerides (r = -0.15, p = 0.05), and total score with BMI (r = -0.20, p = 0.01). There were no correlations with plasma glucose or Hb A1c, and there were no differences in metabolic control by strata of total score.
Conclusions: Instrument reproducibility is good; some of its domains had weak internal consistency and there was little correlation between content and metabolic variables in subjects with type 2 diabetes.
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