Abstract
The main objective of this research is to get greater insight into the customer preferences in purchasing analgesic generic medicines under the non-proprietary name and to identify clusters with different preference structures. This research uses conjoint analysis (CA) and cluster analysis as data processing. This research collects the data through questionnaire from 200 respondents and uses the convenience sampling method to choose 200 respondents from sixteen districts in Semarang. The result of data processing with conjoint analysis indicated that customer prefers the analgesic generic medicine under the non-proprietary name with the following condition: the price of 20% of analgesic generic-branded minutes, has 15 minutes onset time of effect, can be purchased at minimarket, in the form of syrup, and the source of information is family and friend. Moreover, the result of data processing also indicated that the importance of attribute is the place of purchase, followed by price, onset time of drugs, the form of drugs, and, the source of information. Then, the result of data processing with clustering analysis indicated that the respondent can be grouped into four clusters. The attribute that has the highest importance level in cluster 1 until cluster 4 is ‘form of drugs’, ‘the place of purchase’, ‘source of information’, and ‘price’, respectively.
Highlights
The economic burden on drug budgets has increased in the use of generic medicines [1] as those medicines typically 20% to 90% cheaper than originator equivalents [2]
Based on the phenomenon of purchasing the two type of generic medicine as well as the results of a preliminary study, the main objective of this research is to get the greater insight into the customer preferences in purchasing analgesic generic medicines under the nonproprietary name and to identify clusters of the customers based on their preferences This research will use conjoint analysis (CA) for studying the consumer preferences
We found that Pearson’s R was 0.966 and Kendall’s-Tau was 0.783 which indicated that the overall fit of the model was good
Summary
The economic burden on drug budgets has increased in the use of generic medicines [1] as those medicines typically 20% to 90% cheaper than originator equivalents [2] In this case, the usage of inexpensive generic medicines is frequently promoted as a measure to decrease the health care expenses on the pharmaceutical products, and afford savings to patients as well as governments. A generic medicine is a duplicate of brand-name counterpart as the FDA requires that a generic drug have similar dosage, form, safety, quality, strength, performance, mode of administration, and intended to use. Based on this condition, generic medicines have the same benefits and risks as their brand-name counterparts [4]. Despite the increased use of generic medicines, it very limited knowledge about the attitudes of patients towards the generic medicine or the decision-making process surrounding the generic medicine [8]
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