Development and validation of medication storage and disposal questionnaire

Abstract

Abstract Objectives Inappropriate medication storage and disposal is a global problem and has a negative impact on public health, economy and the environment. One of the main causes of this problem is the lack of knowledge among the population about medication storage and disposal. This study aimed to develop a tool to measure knowledge and practice about medication storage and disposal and measure it among the Jordanian population. Methods This web-based cross-sectional study developed a tool to evaluate medication storage and disposal knowledge attitude and practice. Exploratory factor analysis, analysis of variance and t-test were conducted to analyze the data. Key findings 1132 responses were collected. The exploratory factor analysis suggested a three-factor model, the three models are knowledge-need, patient-related, and medication-related factors. Knowledge-need factor evaluates the participants’ perceptions of the need for awareness and regulations regarding medication storage and disposal. The patient-related factor evaluates medication discontinuation behaviours. Medication-related factor evaluates the handling of damaged or expired medication practices. The highest mean of all three factors was for the knowledge-need factor (mean = 4.13), while the lowest was for the patient-related factor (mean = 3.22). The education level was negatively associated with patient-related factor indicating good behaviours. The means of the three factors were significantly associated with the respondents reporting that they know the correct medication storage and disposal behaviours, and the respondents believing that there are consequences of keeping medication at home. Conclusion The questionnaire was a valid and reliable tool to assess the knowledge and practice of medication storage and disposal. This study’s findings suggest that the lack of knowledge is the main reason behind the inappropriate medication storage and disposal practice. There is a need for awareness-improvement, which should involve healthcare awareness campaigns and governmental regulations.