Using contributing causes of death improves prediction of opioid involvement in unclassified drug overdoses in US death records.
Using contributing causes of death improves prediction of opioid involvement in unclassified drug overdoses in US death records.
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DOI:
10.1111/add.14943
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发表时间:
2020-07
期刊:
影响因子:
6
通讯作者:
Hill, Elaine L.
中科院分区:
文献类型:
--
作者:
Boslett, Andrew J.;Denham, Alina;Hill, Elaine L.
关键词:
A substantial share of fatal drug overdoses is missing information on specific drug involvement, leading to underreporting of opioid related death rates and a misrepresentation of the extent of the opioid epidemic. We aimed to compare methodological approaches to predicting opioid involvement in unclassified drug overdoses in United States death records and to estimate the number of fatal opioid overdoses from 1999 to 2016 using the best performing method. This was a secondary data analysis of the universe of drug overdoses in 1999–2016 obtained from the National Center for Health Statistics Detailed Multiple Cause of Death records. United States. A total of 632,331 drug overdose decedents. Drug overdoses with known drug classification comprised 78.2% of the cases (N=494,316) and unclassified drug overdoses (ICD-10 T50.9) comprised 21.8% (N=138,015). Known opioid involvement was defined using ICD-10 codes T40.0–40.4 and T40.6, recorded in the set of contributing causes. Opioid involvement in unclassified drug overdoses was predicted using multiple methodological approaches: logistic regression and machine learning techniques, inclusion/exclusion of contributing causes of death, and inclusion/exclusion of county-level characteristics. Having selected the model with the highest predictive ability, we calculated corrected estimates of opioid related mortality. Logistic regression and random forest models perform similarly. Including contributing causes substantially improves predictive accuracy, while including county characteristics does not. Using superior prediction model, we found that 71.8% of unclassified drug overdoses in 1999–2016 involved opioids, translating into 99,160 additional opioid related deaths, or approximately 28% more than reported. Importantly, there is a striking geographic variation in undercounting of opioid overdoses. When aiming to correct opioid death counts in the United States, future reports and studies should include contributing causes of death as predictors; with respect to statistical modeling, logistic regression and random forests are equally effective in prediction.
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