Thursday, September 21, 2023

 

A comprehensive survey of ChatGPT and its applications across domains


Peer-Reviewed Publication

KEAI COMMUNICATIONS CO., LTD.

WORD CLOUD OF ALL ARTICLES ANALYZED IN THIS REVIEW 

IMAGE: WORD CLOUD OF ALL ARTICLES ANALYZED IN THIS REVIEW view more 

CREDIT: YIHENG LIU



Recent advancements in natural language processing (NLP) have ushered in a new era with the emergence of powerful language models, most notably the Generative Pretrained Transformer (GPT) series, which includes substantial language models such as ChatGPT (GPT-3.5 and GPT-4). These models undergo extensive pre-training on vast textual data, and their capability is evident in their exceptional performance across a broad spectrum of NLP tasks, including language translation, text summarization, and question-answering. Notably, ChatGPT has demonstrated its potential across various domains, spanning education, healthcare, reasoning, text generation, human-machine interaction, and scientific research, to name just a few.

In line with this emerging and noteworthy trend, a team of researchers in China has undertaken a thorough analysis of research papers centered around ChatGPT. As of April 1st, 2023, a total of 194 papers referencing ChatGPT were identified on arXiv.

The team’s study encompassed a comprehensive trend analysis of these papers, resulting in the creation of a word cloud to visually depict the frequently used terminology. Additionally, they delved into the distribution of these papers across diverse fields, presenting statistical insights.

Moreover, their efforts extended to a comprehensive review of the existing literature on ChatGPT.

“Our review spans various dimensions, including an exploration of ChatGPT’s manifold applications, a thorough consideration of the ethical implications associated with its use, an evaluation of its capabilities, and an examination of its inherent limitations,” explains lead author Bao Ge.

 The team’s findings indicate a rapid increase in interest in NLP models, showcasing their substantial potential across various domains.

"Nonetheless, it is essential to acknowledge the valid concerns surrounding biased or harmful content generation, privacy infringements and the potential for technology misuse,” Ge emphasizes.
Mitigating these concerns and establishing a framework for the responsible and ethical development and deployment of ChatGPT stands as a paramount priority."

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Contact the author: Bao Ge. School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, Shaanxi, China. bob_ge@snnu.edu.cn

The publisher KeAi was established by Elsevier and China Science Publishing & Media Ltd to unfold quality research globally. In 2013, our focus shifted to open access publishing. We now proudly publish more than 100 world-class, open access, English language journals, spanning all scientific disciplines. Many of these are titles we publish in partnership with prestigious societies and academic institutions, such as the National Natural Science Foundation of China (NSFC).

 

River sampling study shows impact of COVID-19 pandemic on London’s waterways


The most detailed study of a city’s waterways anywhere in the world has revealed how chemical pollutants in London’s rivers changed over the pandemic

Peer-Reviewed Publication

IMPERIAL COLLEGE LONDON

Millenium Bridge___CR__Melanie_Egli 

IMAGE: WATER SAMPLING AT THE MILLENIUM BRIDGE, LONDON view more 

CREDIT: MELANIE EGLI / IMPERIAL COLLEGE LONDON




The most detailed study of a city’s waterways anywhere in the world has revealed how chemical pollutants in London’s rivers changed over the pandemic.

In a study led by researchers at Imperial College London, scientists have shown how pollutants entering the capital’s river systems – including traces of prescription medications such as antibiotics and antidepressants – changed over the course of the COVID-19 pandemic.

The study, which involved hundreds of samples taken from 14 waterways in Greater London over three years,[1] focused particularly on how wastewater contaminates the city’s rivers and how this changed over the pandemic’s peak. The researchers believe their analysis, published in the journal Environment International, is by far the largest study globally tracking changes to contaminants in a major city’s river systems.[2]

It finds that during 2020 there was a significant decrease in traces of some types of pollutants, including pharmaceuticals, in the River Thames – the city’s main waterway. This coincided with national lockdowns and reduced numbers of people travelling or commuting into London. But levels of contaminants increased again significantly in 2021, with greater concentrations of antibiotics, anti-anxiety and anti-depressant medications entering the city’s waterways after restrictions were lifted.

The analysis also reveals that 21 of the compounds detected posed a potential risk to the environment in freshwater ecosystems, including antibiotics, pain medication and pet parasite medications.
The researchers explain they were able to differentiate between pollutants and pinpoint their sources along waterways with a high level of geographical resolution, and that wastewater treatment plants and combined sewer overflows were the main sources of chemical risks overall. In addition, the team also detected a wide range of other chemicals including illicit drugs and neonicotinoid pesticides used in pet tick and flea medications.

They also found that smaller rivers feeding into the River Thames were most impacted by wastewater pollution, from both direct release from wastewater treatment plants and combined sewer overflows (CSOs). They add that the scale of wastewater monitoring used in their study could be used to gauge the direct and indirect impacts of changes in human activity, and the impact of wastewater processing, on the health of our rivers.

Dr Leon Barron, part of the Environmental Research Group at Imperial College London and senior author of the study, said: “This is the largest study of a heavily urbanised river system and provides us with uniquely detailed insights into several aspects of London’s water quality, most notably how the concentration of pharmaceuticals in our water changed over the course of the pandemic – reflecting changes in public health and reduced movement of people to, from and within London during lockdowns.”

Melanie Egli, PhD student and first author of the study, said: “This study enabled us to gain insights not only into what chemical contamination was in our rivers, but also provided us with high
geographic resolution of where they are coming from. Crucially, we found that some small tributary rivers were particularly impacted by wastewater, highlighting the need for increased monitoring and infrastructure investment for their protection.”

Dr Barron added: “Aside from the pandemic, this work provides an important snapshot of chemical contamination before the Thames Tideway Tunnel ‘Super Sewer’ is opened in 2025, which aims to reduce pollution by over 95 %. This is a great start, but wastewater contamination in other rivers nationally needs urgent action.”

Professor Guy Woodward, Professor of Ecology in the Department of Life Sciences, and a co-author of the paper, commented: “This is a comprehensive and detailed study of the huge range of chemicals that we find in our freshwater ecosystems, and it picks up on several that are at potentially harmful concentrations for wildlife, but which have seemingly been overlooked in traditional surveys of our water quality in urban areas at this resolution.”

The research was supported by funding from the UKRI Medical Research Council (MRC) and the National Institute for Health and Care Research (NIHR). The study forms part of a project within the Environmental Research Group and the MRC Centre for Environment and Health at Imperial College London.

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NOTES TO EDITORS: This press release uses a labelling system developed by the Academy of Medical Sciences to improve the communication of evidence. For more information, please see: http://www.sciencemediacentre.org/wp-content/uploads/2018/01/AMS-press-release-labelling-system-GUIDANCE.pdf
[1] River Thames, River Hogsmill, River Wandle, River Brent, River Crane, River Lee, River Lea, Channelsea River, Fray’s River, Grand Union Canal (Paddington Arm, Slough Arm), Pymmes Brook, and Beverley Brook
[2] Over the course of three years, from 2019 to 2021, researchers collected and analysed almost 400 water samples from Greater London waterways. Overall, they found almost 100 pollutants of concern, with each pollutant detected at least once.
Analysis revealed how these compounds changed over the course of the COVID-19 pandemic. Collection took place in the last three months of each year for consistency, and samples were taken by Melanie Egli, PhD student within the Environmental Research Group and the MRC Centre for Environment and Health at Imperial.
Using the 2019 data as a baseline, the team was able to detect statistical changes in the concentration of compounds. Analysis revealed the presence of three compounds classed as high-risk contaminants – posing a risk to the environment or increased antimicrobial resistance. These include imidacloprid (a parasiticide found principally in flea medications for domestic pets), azithromycin (an antibiotic), and diclofenac (an anti-inflammatory). The largest risk compound was imidacloprid, aligning with previous findings on the environmental impact of pet parasiticides.
In addition, the study found that despite an initial dip in compounds in 2020, by 2021, levels of many pharmaceutical compounds and metabolites had exceeded pre-pandemic levels (measured against the 20129 baseline). The findings match prescribing data trends, which show a year-on-year increase in the prescription of antidepressants and anti-anxiety medications in England.
They also show the smaller rivers feeding into the Thames were the most impacted by wastewater pollution, released directly from wastewater treatment plants and combined sewage overflows (CSOs), with the city’s eight plants believed to be operating at 96% of their population capacity, and higher than the UK average (88%). Four rivers were most impacted by outputs from treatment plants and CSOs: the River Lea, Beverley Brook, River Wandle, and the Hogsmill River, all of which feed into the River Thames.

 

Unveiling the aquatic marvel: rock-climbing fish adhesion-sliding feat and its inspiration


Peer-Reviewed Publication

SCIENCE CHINA PRESS

Adhesion and Crawling Ability and Mechanism of the Rock-climbing Fish and Biomimetic Prototype Design 

IMAGE: (A) AMONG THE ADHERING SPECIES, THE ROCK-CLIMBING FISH CAN GENERATE GREAT ADHESION FORCE WITH AMAZING CRAWLING ABILITY UNDERWATER. (B) THE SETAE ARRAY ON THE BROWN SHADED AREA CONFORMS TO THE SUBSTRATE AND FORMS A SEALING CHAMBER THROUGH THE STEFAN FORCE; THE INNER CAVITY OF THE SUCTION CUP IN THE BLUE AREA PRESENTS A PRESSURE CHANGE DUE TO THE VOLUME CHANGE WHEN THE PULL-OFF FORCE IS IMPOSED. (C) THE MECHANISM FOR GENERATING THE NEGATIVE PRESSURE ADHESION: UPON THE ACTION OF THE PULL-OFF FORCE, THE MICRO SETAE AT THE EDGE OF THE SUCTION CUP ARE KEPT IN CONTACT WITH THE SUBSTRATE BY FORCE “FA-SETAE” DUE TO THE HYDRODYNAMIC INTERACTIONS, AND THE SUCTION CUP KEEPS SEALED DURING THE PULL-OFF PROCESS. HOWEVER, THE SUCTION CUP DEFORMS TO INCREASE ITS VOLUME AND DECREASE ITS INNER PRESSURE TO GENERATE NEGATIVE PRESSURE ADHESION TO RESIST THE PULL-OFF FORCE THROUGHOUT THE PROCESS. (D) A BIONIC CRAWLING FISH NAMED CLIMBOT, AN UNDERWATER CLIMBING ROBOT WAS DESIGNED BASED ON THE ADHESION MECHANISM OF THE FISH, WHICH CAN CRAWL AT A MAXIMUM SPEED OF 3.7 BL/S AND HAS AN ADHESION FORCE OF 25.67 ± 2.81 N. view more 

CREDIT: ©SCIENCE CHINA PRESS




Underwater "traffic" encompasses a fascinating variety of creatures, from fish with their graceful swimming postures to jet-propelled jellyfish and remoras hitching rides on other organisms. Among these, a remarkable species known as the "underwater gecko", the rock-climbing fish(Beaufortia kweichowensis), stands out. This extraordinary creature possesses a unique set of abilities – it can swiftly slide along underwater surfaces like an ice skater, crawl against water currents, and securely adhere to a fixed position with remarkable adhesion force.

Recently, a collaborative effort between the research team led by Prof. Lianqing Liu at the Shenyang Institute of Automation, Chinese Academy of Sciences, and institutions including the Chengdu Institute of Biology, Chinese Medical University, Tsinghua University, and the University of Hong Kong, has shed light on the closely guarded secrets behind the rock-climbing fish’s dynamic adhesion and rapid crawling movements. The team has also designed an underwater biomimetic adhering-sliding robot inspired by the rock-climbing fish. This innovative robot can achieve tight adhesion on a moving ship model and slide smoothly underwater.

The research team highlighted that the Climbot's impressive adhesion ability enables it to cling with a force equivalent to 1000 times its weight while accomplishing a remarkable glide at a speed of 7.83 times its body length per second. The mechanism underlying this unique dynamic adaptive adhesion capability has long remained an enigma, intriguing researchers in the field of underwater robotics. Balancing substantial surface adhesion with agile and swift gliding poses a significant challenge, as increased adhesion often results in heightened surface contact stress.

Prof. Liu said “Typically, reversible underwater adhesion relies on a negative pressure adhesion mechanism, a system adopted by rock-climbing fish as well. However, the mystery lies in the fact that other creatures such as remoras and octopuses, also utilizing negative pressure adhesion, cannot execute surface gliding like the rock-climbing fish.”

The secret to the rock-climbing fish's exceptional adhesion-gliding prowess lies in the setae structures present on the edges of its suction cups. These setae, measuring 4-6 micrometers in diameter and 12-14 micrometers in length, convert the contact area with water into a "sticky" gel-like substance under the influence of Stefan force, firmly attaching the suction cups to the surface and creating a dynamic water seal. This unique suction cup can passively deform its soft abdomen to counteract external detachment forces, or actively contract its abdomen to generate a powerful adhesion force, anchoring itself securely to a particular position. Moreover, the water film present at the contact interface acts as a "lubrication film" during movement, reducing frictional resistance and facilitating smooth surface gliding. This ingenious mechanism effectively balances the conflict between substantial adhesion and rapid sliding.

Drawing inspiration from this discovery, the research team successfully utilized micro-nano lithography and molding techniques to fabricate setae arrays, integrating them into 3D-printed soft suction cups, and incorporating a control unit to design and create the Climbot, an underwater adhering-sliding robot. The Climbot can tightly adhere to the surface of a moving ship model and glide effortlessly underwater.

This groundbreaking research showcases a novel underwater locomotion, and the potential applications of "Climbot" underwater suction-crawling robot technology hold promising prospects in the fields of marine science, underwater exploration, and ocean engineering.

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This work has been published at National Science Review. See the article:

Uncover rock-climbing fish’s secret of balancing tight adhesion and fast sliding for bioinspired robots

https://doi.org/10.1093/nsr/nwad183

Adhesion and crawling of the C [VIDEO] |

 

Slow growth in crocodile ancestors pre-dated their semi-aquatic lifestyle


Research highlights newly discovered fossil crocodile ancestors (known as crocodylomorphs) that exhibited slow growth rates, similar to modern-day crocodilians


Peer-Reviewed Publication

UNIVERSITY OF THE WITWATERSRAND

Crocodylomorph 

IMAGE: THE BLACK SILHOUETTE IS A ROUGH INDICATION OF WHAT BP/1/8484 WOULD HAVE LOOKED LIKE. IN THE BACKGROUND, A SAMPLE OF A MICROSCOPIC IMAGE SHOWING THE BONE STRUCTURE OF THE GIANT EARLY CROCODYLOMORPH FROM THIS STUDY. THE TYPE OF BONE TISSUE IS CALLED PARALLEL-FIBRED BONE. THE GROWTH MARK INDICATES WHEN THE ANIMAL STOPPED GROWING DURING THE UNFAVOURABLE GROWING SEASON. view more 

CREDIT: JENNIFER BOTHA; SILHOUETTE PHYLOPIC.ORG.




Today’s crocodilians (including crocodiles and alligators) all grow slowly, taking years to reach maximum size. In contrast, birds are crocodilian’s closest living relatives, and they can reach adult size in less than a year (~150 days for a chicken!). When, how, and why crocodilians evolved to grow so slowly has eluded researchers for years. A new study titled “Origins of slow growth on the crocodilian stem lineage” in Current Biology, is beginning to shed light on this question.

By investigating the internal structure of fossil bones of 200 million-year-old fossil crocodile ancestors (known as crocodylomorphs) from South Africa, a team of researchers has shown that they grew slowly, similar to their living descendants. “After studying the internal structure of the bones of the animal we were surprised to find that the bone tissues consisted of a type of bone tissue called parallel-fibred bone. This shows that this crocodylomorph grew at a rate between that of its fast-growing ancestors and slower-growing living crocodiles,” says co-author Professor Jennifer Botha, from the University of the Witwatersrand. 

Unlike today’s sprawling ambush predators, these early crocodylomorphs were active, fully terrestrial animals with upright limb postures. This research finding casts doubt on prevailing wisdom that slow growth in living crocodiles is linked to the evolution of their sedentary, semiaquatic lifestyles. 

The researchers also studied fossils of a gigantic new crocodilian ancestor that lived 210 million years ago, discovered in the village of Qhemegha, Eastern Cape, South Africa. Professor Jonah Choiniere of the University of the Witwatersrand, and co-author of the paper says “This fantastic specimen is one of dozens of new fossils we’ve recovered from our excavations in Late Triassic rocks at Qhemegha Village. The fossil area was initially discovered by local people and has developed into a superb example of integrating local knowledge with scientific enquiry”. 

The researchers combined this with data from specimens previously collected and held in South African museums. By cutting the bones and examining their features under a high-powered microscope, they could assess the age at death, the amount of annual growth, and the bone tissue characteristics of these extinct crocodilian forebears. “When comparing this new specimen to other known species we found that it was a very early crocodile ancestor, possibly the earliest of the group that contains modern crocodiles,” says Bailey Weiss, another co-author of the study from the University of the Witwatersrand.

They found that the gigantic new species grew more slowly than other large reptiles of its day (such as dinosaurs) and that other crocodylomorph species that evolved more recently retained this slow growth strategy, decelerating it even further. The strategy of slow growth became a characteristic of all known crocodylomorphs descending from their ancient ancestor. Soon after slow growth first appeared in the crocodilian stem lineage, the world faced a mass extinction event at the end of the Triassic Period, and only the slower-growing members of the group managed to survive through it.

In contrast, dinosaurs are hypothesised to have survived the extinction event by growing fast. After the extinction, the world was left with fast-growing dinosaurs and slow-growing crocodylomorphs, building a foundation for the stark growth differences in their descendants - the birds and crocodilians alive today. 

“Our new results show that the major difference we see between living, fast-growing birds and their slow-growing croc relatives was established really early in the evolutionary history of the group, despite the fact that their common ancestor would have been a fast-growing animal,” says Paul Barrett, Merit Professor of Palaeontology at the Natural History Museum, London.

 

Novel organic light-emitting diode with ultralow turn-on voltage for blue emission

Peer-Reviewed Publication

TOKYO INSTITUTE OF TECHNOLOGY

Figure 1. Lighting up a blue organic LED with a single AA battery 

IMAGE: LIGHTING UP A BLUE ORGANIC LED WITH A SINGLE AA BATTERY. view more 

CREDIT: ASSOCIATE PROFESSOR IZAWA AND THE MEMBER AND AUTHORS OF THIS RESEARCH TEAM.

An upconversion organic light-emitting diode (OLED) based on a typical blue-fluorescence emitter achieves emission at an ultralow turn-on voltage of 1.47 V, as demonstrated by researchers from Tokyo Tech. Their technology circumvents the traditional high voltage requirement for blue OLEDs, leading to potential advancements in commercial smartphone and large screen displays.

Blue light is vital for light-emitting devices, lighting applications, as well as smartphone screens and large screen displays. However, it is challenging to develop efficient blue organic light-emitting diodes (OLEDs) owing to the high applied voltage required for their function. Conventional blue OLEDs typically require around 4 V for a luminance of 100 cd/m2; this is higher than the industrial target of 3.7 V—the voltage of lithium-ion batteries commonly used in smartphones. Therefore, there is an urgent need to develop novel blue OLEDs that can operate at lower voltages.

In this regard, Associate Professor Seiichiro Izawa from Tokyo Institute of Technology and Osaka University, collaborated with researchers from University of Toyama, Shizuoka University, and the Institute for Molecular Science has recently presented a novel OLED device with a remarkable ultralow turn-on voltage of 1.47 V for blue emission and a peak wavelength at 462 nm (2.68 eV) (as shown in Figure 1). Their work will be published in Nature Communications.

The choice of materials used in this OLED significantly influences its turn-on voltage. The device utilizes NDI-HF (2,7-di(9H-fluoren-2-yl)benzo[lmn][3,8]-phenanthroline-1,3,6,8(2H,7H)-tetraone) as the acceptor, 1,2-ADN (9-(naphthalen-1-yl)-10-(naphthalen-2-yl)anthracene) as the donor, and TbPe (2,5,8,11-tetra-tert-butylperylene) as the fluorescent dopant. This OLED operates via a mechanism called upconversion (UC). Herein, holes and electrons are injected into donor (emitter) and acceptor (electron transport) layers, respectively. They recombine at the donor/acceptor (D/A) interface to form a charge transfer (CT) state. Dr. Izawa points out: “The intermolecular interactions at the D/A interface play a significant role in CT state formation, with stronger interactions yielding superior results.”

Subsequently, the energy of the CT state is selectively transferred to the low-energy first triplet excited states of the emitter, which results in blue light emission through the formation of a high-energy first singlet excited state by triplet-triplet annihilation (TTA). “As the energy of the CT state is much lower than the emitter's bandgap energy, the UC mechanism with TTA significantly decreases the applied voltage required for exciting the emitter. As a result, this UC-OLED reaches a luminance of 100 cd/m2, equivalent to that of a commercial display, at just 1.97 V,” explains Dr. Izawa.

In effect, this study efficiently produces a novel OLED, with blue light emission at an ultralow turn-on voltage, using a typical fluorescent emitter widely utilized in commercial displays, thus marking a significant step toward meeting the commercial requirements for blue OLEDs. It emphasizes the importance of optimizing the design of the D/A interface for controlling excitonic processes and holds promise not only for OLEDs but also for organic photovoltaics and other organic electronic devices.

Let us hope that this technology gets commercialized soon!

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About Tokyo Institute of Technology

Tokyo Tech stands at the forefront of research and higher education as the leading university for science and technology in Japan. Tokyo Tech researchers excel in fields ranging from materials science to biology, computer science, and physics. Founded in 1881, Tokyo Tech hosts over 10,000 undergraduate and graduate students per year, who develop into scientific leaders and some of the most sought-after engineers in industry. Embodying the Japanese philosophy of “monotsukuri,” meaning “technical ingenuity and innovation,” the Tokyo Tech community strives to contribute to society through high-impact research.

https://www.titech.ac.jp/english/

 

About Osaka University

Osaka University was founded in 1931 as one of the seven imperial universities of Japan and is now one of Japan's leading comprehensive universities with a broad disciplinary spectrum. This strength is coupled with a singular drive for innovation that extends throughout the scientific process, from fundamental research to the creation of applied technology with positive economic impacts. Its commitment to innovation has been recognized in Japan and around the world, being named Japan's most innovative university in 2015 (Reuters 2015 Top 100) and one of the most innovative institutions in the world in 2017 (Innovative Universities and the Nature Index Innovation 2017). Now, Osaka University is leveraging its role as a Designated National University Corporation selected by the Ministry of Education, Culture, Sports, Science and Technology to contribute to innovation for human welfare, sustainable development of society, and social transformation.

https://resou.osaka-u.ac.jp/en

A New Frontier for Blue Organic Light-Emitting Diodes (IMAGE)

TOKYO INSTITUTE OF TECHNOLOGY

 

How new model boosts supply and lowers prices for generic drugs


Reports and Proceedings

UNIVERSITY OF CAMBRIDGE




First empirical evidence for Civica Rx, a health care utility, finds increased supply security and reduced costs for health systems, says study in NEJM Catalyst authored by two Cambridge Judge Business School academics.

Civica Rx, a not-for profit drug manufacturer founded by seven US health systems and three philanthropic organisations, increased supply security and lowered cost on aggregate for 20 drug products, according to the first empirical evidence of Civica’s impact published in the journal NEJM Catalyst.

“Results show that Civica was able to improve generic drug access above the wholesaler model,” says the article in NEJM Catalyst, a publication that is part of the New England Journal of Medicine family. “Chronic drug shortages have been an extremely challenging problem and elusive to sustainable improvement in the past. This makes these early results highly promising.”

The NEJM Catalyst article (entitled “Vaccinating Health Care Supply Chains Against Market Failure: The Case of Civica Rx”) – is co-authored by the co-founders of the Healthcare Utility Initiative at Cambridge Judge Business School: Carter Dredge, Senior Vice President and Lead Futurist at SSM Health in St. Louis, Missouri (one of Civica’s founding health systems), who is a Business Doctorate candidate at Cambridge Judge, and by Stefan Scholtes, Dennis Gillings Professor of Health Management at Cambridge Judge.

Key breakthrough is structural rather than technological

“The results of this study are very encouraging for patients and health systems,” says Carter Dredge. “The innovation of Civica is not technological but rather structural: a new business model that injects a new type of supplier into a decades-old market for generic drugs in order to address a market failure.”

Civica is based on new business model called a health care utility (HCU) that prioritises access over profit. It was founded in 2018 to address generic drug shortages and high prices that have plagued health systems in the US and elsewhere, and now provides more than 75 critical medications at risk for shortages to US health systems.

Government intervention hasn’t solved problems in cost and supply

“Some problems in health care are so complex that traditional private-sector or governmental interventions alone have not been able to solve the problems,” the study says. “Although competition increases quality and reduces the cost of goods and services across a wide spectrum of industries, health care seems intractably resistant to standard forms of competition — particularly in its hyperspecialized supply chains.”

For example, the study says that the average price in 2022 for the uninsured for a box of five pen cartridges of insulin used to manage diabetes was more than $500, which results in 25% of Americans who rely on insulin being forced to ration their medications because of cost.

Study favourably compared Civica to 62 drug wholesalers

The study focused on a cohort of 14 critical and shortage-prone hospital drugs that represented 20 distinct products (some medicines have multiple products due to different dose and vial size) between 2020 and 2022. Data comes from internal hospital pharmacy operations systems, supply chain purchasing databases, wholesaler product information, the American Society of Health System Pharmacists, and Civica.

The authors estimated that Civica fulfilled its contractually guaranteed volume at 96%, whereas the wholesalers fulfilled their orders at 86%, with the difference being statistically significant (p=0.03). Further, Civica offered an additional product access benefit of 43% above the contractual minimum volume.

In addition, wholesaler prices at the order level were estimated to be on average 46% above the Civica price for the same product in the same year; however, through highly proactive health system purchasing efforts to buy more volume when prices were low from the 62 non-Civica manufacturers, this closed the actual achieved cost-savings gap between the wholesalers and Civica to 2.7% in aggregate, with Civica still being the lower-cost option.

(The 14 medicines are: bivalirudin to prevent blood clotting, the antibiotic daptomycin, anti-inflammatory dexamethasone, narcotic pain medicine fentanyl, pre-surgery medicine katamine, labetalol for hypertension, local anesthetic lidocaine, seizure medication lorazepam, naloxone to treat opioid overdose, neostigmine for anesthesia reversal, ondansetron to prevent nausea, rocuronium bromide for general anesthesia, sodium bicarbonate for cardiac arrest, and the antibiotic vancomycin.)

New model sells drugs at same transparent price to all health systems

The health care utility model is governed by stewards rather than owned, and pricing is uniform for all customers in a bid to maximise access rather than profits. Civica members purchase Civica medications at the same transparent price, as determined by the lowest appropriate cost necessary to sustainably provide the drugs over a 5-year period.

The seven large US health systems that founded Civica are: Catholic Health Initiatives, now CommonSpirit Health; HCA Healthcare; Intermountain Healthcare; Mayo Clinic; Providence St. Joseph Health; SSM Health; and Trinity Health. The three founding philanthropies are the Gary and Mary West Foundation, the Laura and John Arnold Foundation, and the Peterson Center on Healthcare.

Civica now serves more than 50 US health systems

The seven founding health systems have since been joined by more than 50 other health systems covering more than 1,500 hospitals and about 225,000 hospital beds. Through July 2023, more than 56 million cumulative patient-doses of Civica medicines have been administered.

In conclusion, the authors say:

“The problems we face in health care are daunting, but many of them are solvable with the right approach. In learning from Civica’s experience, some of the most fundamental answers may already be at our fingertips.

“This article provides the first empirical evidence that this approach is working.”