Abstract
Japanese medical device adverse events terminology, published by the Japan Federation of Medical Devices Associations (JFMDA terminology), contains entries for 89 terminology items, with each of the terminology entries created independently. It is necessary to establish and verify the consistency of these terminology entries and map them efficiently and accurately. Therefore, developing an automatic synonym detection tool is an important concern. Such tools for edit distances and distributed representations have achieved good performance in previous studies. The purpose of this study was to identify synonyms in JFMDA terminology and evaluate the accuracy using these algorithms. A total of 125 definition sentence pairs were created from the terminology as baselines. Edit distances (Levenshtein and Jaro–Winkler distance) and distributed representations (Word2vec, fastText, and Doc2vec) were employed for calculating similarities. Receiver operating characteristic analysis was carried out to evaluate the accuracy of synonym detection. A comparison of the accuracies of the algorithms showed that the Jaro–Winkler distance had the highest sensitivity, Doc2vec with DM had the highest specificity, and the Levenshtein distance had the highest value in area under the curve. Edit distances and Doc2vec makes it possible to obtain high accuracy in predicting synonyms in JFMDA terminology.
Highlights
In Japan, medical facilities and medical device manufacturers are required to submit medical device adverse event reports (MDAERs) to the Ministry of Health, Labor, and Welfare when medical devices are involved in adverse events such as catheter breakage occurring during a medical procedure
In MDAERs, a detailed description of the adverse events and the problems they give rise to for patients due to the medical devices are obtained through free writing; and it is difficult to categorize the cases involved for a statistical analysis of the adverse events
The sensitivities, specificities, and area under the curve (AUC) were obtained from the receiver operating characteristic (ROC) analysis (Table 1)
Summary
In Japan, medical facilities and medical device manufacturers are required to submit medical device adverse event reports (MDAERs) to the Ministry of Health, Labor, and Welfare when medical devices are involved in adverse events such as catheter breakage occurring during a medical procedure. In MDAERs, a detailed description of the adverse events and the problems they give rise to for patients due to the medical devices are obtained through free writing (there are no guidelines for the written format); and it is difficult to categorize the cases involved for a statistical analysis of the adverse events. To standardize the terms in MDEARs, medical device adverse event terminology 1st edition (terminology of the Japan Federation of Medical Devices Associations (JFMDA terminology)) was published in March 2015 [1]. This terminology consists of 89 medical device terminology items developed by 13 industry groups in the industry that are members of the JFMDA.
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