Understanding research methods,limitations, and applications of drug data collected by the National Forensic Laboratory Information System (NFLIS-Drug)

The National Forensic Laboratory Information System (NFLIS) is a drug surveillance program of the US Drug Enforcement Administration that systematically collects data on drugs that are seized by law enforcement and submitted to and analyzed by the Nation's forensic laboratories (NFLIS-Drug). NFLIS-Drug data are increasingly used in predictive modeling and drug surveillance to examine drug availability patterns. Given the complexity of the data and data collection, there are some common methodological pitfalls that we highlight with the aim of helping researchers avoid these concerns. The analysis done for this Technical Note is based on a review of the scientific literature that includes 428 unique, refereed article citations in 182 distinct journals published between January 1, 2005, and April 30, 2021. Each article was analyzed according to how NFLIS-Drug data were mentioned and whether NFLIS-Drug data were included. A sample of 37 articles was studied in-depth, and data issues were summarized. Using examples from the literature, this Technical Note highlights eight broad concerns that have important implications for the proper applications, interpretations, and limitations of NFLIS-Drug data with suggestions for improving research methods and accurate reporting of forensic drug data. NFLIS-Drug data are timely and provide key information to inform drug use trends across the United States; however, our present analysis shows that NFLIS-Drug data are misunderstood and represented in the literature. In addition to highlighting these issues, DEA has created several resources to assist NFLIS data users and researchers, which are summarized in the discussion.     

The use of geographic information systems as a forensic tool to investigate sources of marine mammal entanglement in fisheries

Commercial fisheries represent a significant anthropogenic threat to marine mammal survival. Causes of marine mammal mortality are commonly determined by detailed necropsies of stranded carcasses. Gross evidence of entanglement in a fishery might include gear attached to the body, internal indications of asphyxiation and trauma, or gear markings on the epidermis. As gear is often fishery-specific, wound patterns on the epidermis that are created by entanglements in fishing gear may serve to identify possible sources of mortality. For this study, tools within the Environmental Systems Research Institute, Inc. (ESRI) ArcMap GIS software were used to create maps that outline impressions that fishing gear can leave on the epidermis of entangled marine mammals. These maps can subsequently be used to identify possible sources of fishery entanglement for the many marine mammals that wash ashore without gear attached to their carcass. Entanglement wound patterns can be visually compared with fishing gear characteristics; however, differences in scale and image quality can introduce subjectivity that might hinder source identification. The technique described herein provides an objective way to outline the unique characteristics of fishing gear and their associated wounds on entangled marine mammals. Additionally, spatial relationships are preserved as the maps are adjusted to varying scales. Whereas the initial protocol required time-consuming digitization of the outline and visual determination of the pattern interface, this new, semiautomated technique saves analyst effort and minimizes error.     

'This just isn't sustainable': precarious employment, stress and workers' health

This paper explores the impact of precarious employment relationships on health outcomes. It uses a novel framework, "Employment Strain" to describe the characteristics of different employment relationships and how they impact health outcomes. It uses interview data and comments provided on a survey to explore these issues. The paper begins by exploring if the health effects reported by mid-career individuals in precarious employment are different from those of younger and older workers. Finding limited evidence to support this hypothesis, the paper goes on to explore in detail the conditions under which precarious employment does increase stress and tension and impact health outcomes. It concludes that a combination of an individual's desire for more permanent employment, the expectation that permanent employment will be found, and the support individuals receive from various sources are critical to understanding the health effects of precarious employment.     

Resistance to the mainlandization of criminal justice practices: a barrier to the development of restorative justice in Hong Kong

This article examines the political and legal barriers to introducing restorative justice (RJ) in Hong Kong. It argues that the processes involved in RJ may be in conflict with the rule of law, which is regarded by the citizens of Hong Kong as sacrosanct in their resistance to the "mainlandization" of criminal justice practices after China resumed sovereignty of Hong Kong. It is argued that, because it could admit such potentially harmful Chinese criminal justice concepts as "rule by the people," "absence of the presumption of innocence," "leniency for self-confession and severity for resistance," and "toeing the party line," RJ would be devoid of any restorative substance and could breach the principles of due process.     

The effects of dosed tobacco in evidentiary breath testing using non-drinking subjects

A total of seventeen subjects were administered breath tests with alcohol dosed tobacco to see if there was an interference with the evidentiary breath testing. Fourteen subjects provided one set of two breath samples without the dosed tobacco followed by a set of two breath samples with the dosed tobacco. The other three subjects provided one breath sample without the dosed tobacco and then one breath sample with the dosed tobacco within the same testing sequence. Eight subjects had breath test readings of 0.00g/210L with the dosed tobacco. Mouth alcohol was detected with the dosed tobacco in six of the subjects, and a reading of 0.01g/210L, 0.04g/210L, and 0.05g/210L were found in five of the subjects. If the officer follows the directive of checking the mouth for a foreign substance and following a 15-20min observation/deprivation period, a false positive result will likely be avoided. If the officer does not find tobacco when checking the mouth for a foreign substance, and dosed tobacco is present during the breath test, most likely there would not be a measurable amount of alcohol to report or there would be a mouth alcohol reading from the sample.     

Sudden Collapse due to Medullary and Cervical Cord Infarction—An Unusual Presentation of Hepatocellular Carcinoma

Hepatocellular carcinoma (HCC) is a common cancer worldwide with a great potential for metastatic spread. Hepatocellular carcinoma often arises in people with underlying viral hepatitides or liver cirrhosis and may present in various ways including abdominal pain, liver mass, and signs of hepatocellular decompensation. Many tumors may have metastasized to other organs such as the lungs, lymph nodes, bone, and adrenal glands at the time of diagnosis. However, it is uncommon for HCC to present purely due to its metastasis, such as spinal cord compression from vertebral metastasis. Here, an unusual presentation of a sudden cardiovascular collapse due to medullary and cervical cord infarction from compression of the cervical cord is presented. The importance of clinical investigations, the usefulness of postmortem computed tomography scans, and the examination of the cervical spine and cervical cord in people with no obvious cause of death after standard autopsy procedures are emphasized.     

Urban Residents’ Prejudice and Integration of Rural Migrants into Urban China

Using data from a 2011 national household survey, this study examines the factors shaping urban residents’ prejudice toward rural-to-urban migrants and the impacts of prejudice on rural migrants’ integration into urban communities. The author addresses the endogeneity of the prejudice variable by employing an instrumental variable method. The results show that urban residents with higher education and household income report stronger prejudice. Also, urban residents with urban hukou at birth are more prejudiced toward rural migrants. Given that hukou status at birth is tied to parental hukou status, this result implies that prejudice can be transferred across generations. With regards to rural migrants’ integration into urban communities, high levels of prejudice in one’s current county of residence reduces perceived social standing of rural migrants and increases the number of livelihood problems they encounter. The author also conducts a falsification test, which provides support that the effect of urban residents’ prejudice on rural migrants’ integration is causal.