Pharmaciana (Nov 2018)
The validation of patient knowledge questionnaire for patients with diabetes mellitus and hyperlipidemia
Abstract
The prevalence of Diabetes Mellitus (DM) with hyperlipidemia in Indonesia has shown an increase. Both of these diseases pose a risk of cardiovascular complications. DM patients with hyperlipidemia require proper management to control their blood glucose, total cholesterol, and LDL levels. Knowledge is one of the important factors in improving the adherence to therapy and the quality of life of DM-hyperlipidemia patients, especially in maintaining blood glucose and total cholesterol levels. This study aimed to develop a patient knowledge questionnaire for patients with DM-hyperlipidemia. The study used a cross-sectional method. The inclusion criteria were patients aged 18-70 years old and diagnosed with DM-Hyperlipidemia who received at least one oral antidiabetic and oral anti-cholesterol drug. The questionnaire items were developed based on the therapy guidelines and previous research and validated according to the opinion of scientific experts in DM and clinical psychologists. The pilot test included 10 healthy patients and 10 eligible DM-hyperlipidemia patients. The questionnaire was then validated by interviewing 30 DM-Hyperlipidemia patients who received therapy at the outpatient clinic of PKU Muhammadiyah Hospital in Yogyakarta. The data obtained from this interview were analyzed in SPSS using the Pearson product-moment correlation coefficient and Cronbach’s alpha to identify the reliability of the questionnaire. Based on the validation results, there were several invalid items, namely questions No. 9, 11, 12, 15, 16, and 17, which measured patient’s knowledge of hyperlipidemia, medication, and general health. After omitting them, the re-test produced r-value> 0.3 and a Cronbach’s alpha of 0.715. The patient knowledge questionnaire for DM-Hyperlipidemia patients is valid and reliable for measuring the level of knowledge of patients with DM with dyslipidemia.
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