A dynastic elite in monumental Neolithic society.

The nature and distribution of political power in Europe during the Neolithic era remains poorly understood1. During this period, many societies began to invest heavily in building monuments, which suggests an increase in social organization. The scale and sophistication of megalithic architecture along the Atlantic seaboard, culminating in the great passage tomb complexes, is particularly impressive2. Although co-operative ideology has often been emphasised as a driver of megalith construction1, the human expenditure required to erect the largest monuments has led some researchers to emphasize hierarchy3-of which the most extreme case is a small elite marshalling the labour of the masses. Here we present evidence that a social stratum of this type was established during the Neolithic period in Ireland. We sampled 44 whole genomes, among which we identify the adult son of a first-degree incestuous union from remains that were discovered within the most elaborate recess of the Newgrange passage tomb. Socially sanctioned matings of this nature are very rare, and are documented almost exclusively among politico-religious elites4-specifically within polygynous and patrilineal royal families that are headed by god-kings5,6. We identify relatives of this individual within two other major complexes of passage tombs 150 km to the west of Newgrange, as well as dietary differences and fine-scale haplotypic structure (which is unprecedented in resolution for a prehistoric population) between passage tomb samples and the larger dataset, which together imply hierarchy. This elite emerged against a backdrop of rapid maritime colonization that displaced a unique Mesolithic isolate population, although we also detected rare Irish hunter-gatherer introgression within the Neolithic population.

Dental hygiene and direct access to care: Past and present.

The American Dental Hygienists' Association (ADHA) defines direct access as the ability of a dental hygienist to initiate treatment based on their assessment of patient's needs without the specific authorization of a dentist, treat the patient without the physical presence of a dentist and maintain a provider-patient relationship. In 2000, there were nine direct access states; currently, there are 42 states that have authorized some form of direct access. The ADHA has been instrumental in these legislative initiatives through strong advocacy efforts. While research and data support the benefits of direct preventive/therapeutic care provided by dental hygienists, many barriers remain. This paper chronicles key partnerships that have influenced and advocated for direct access and the recognition of dental hygienists as primary healthcare providers. The National Governors Association released a report in 2014 suggesting that dental hygienists be 'deployed' outside of dental offices as one strategy to increase access to oral health care along with reducing restrictive dental practice acts and increasing the scope of practice for dental hygienists. The December 2021 release of the National Institutes of Health report, Oral Health in America, further supports greater access to dental hygiene preventive/therapeutic care. This paper also reflects on opportunities and barriers as they relate to workforce policy, provides examples of effective state policies and illustrates an educational curriculum specifically created to prepare dental hygienists to provide oral health services in settings outside of the dental office. Dental hygiene education must ensure that graduates are future-ready as essential healthcare providers, prepared to deliver direct access to dental hygiene care.

Continental-scale tree-ring-based projection of Douglas-fir growth: Testing the limits of space-for-time substitution.

A central challenge in global change research is the projection of the future behavior of a system based upon past observations. Tree-ring data have been used increasingly over the last decade to project tree growth and forest ecosystem vulnerability under future climate conditions. But how can the response of tree growth to past climate variation predict the future, when the future does not look like the past? Space-for-time substitution (SFTS) is one way to overcome the problem of extrapolation: the response at a given location in a warmer future is assumed to follow the response at a warmer location today. Here we evaluated an SFTS approach to projecting future growth of Douglas-fir (Pseudotsuga menziesii), a species that occupies an exceptionally large environmental space in North America. We fit a hierarchical mixed-effects model to capture ring-width variability in response to spatial and temporal variation in climate. We found opposing gradients for productivity and climate sensitivity with highest growth rates and weakest response to interannual climate variation in the mesic coastal part of Douglas-fir's range; narrower rings and stronger climate sensitivity occurred across the semi-arid interior. Ring-width response to spatial versus temporal temperature variation was opposite in sign, suggesting that spatial variation in productivity, caused by local adaptation and other slow processes, cannot be used to anticipate changes in productivity caused by rapid climate change. We thus substituted only climate sensitivities when projecting future tree growth. Growth declines were projected across much of Douglas-fir's distribution, with largest relative decreases in the semiarid U.S. Interior West and smallest in the mesic Pacific Northwest. We further highlight the strengths of mixed-effects modeling for reviving a conceptual cornerstone of dendroecology, Cook's 1987 aggregate growth model, and the great potential to use tree-ring networks and results as a calibration target for next-generation vegetation models.

Improving patient safety in the endoscopy unit: utilization of remote video auditing to improve time-out compliance.

BACKGROUND AND AIMS: Patient and procedure verification, or the time-out process (TOP), is considered one of the most vital components of patient safety. It has long been a focus of intervention in the surgical community and recently was incorporated into the American Society for Gastrointestinal Endoscopy guidelines for safety in the GI endoscopy unit. The TOP has had limited attention in the endoscopy literature but remains an area for improvement in clinical endoscopy practice. The aim of this study was to identify barriers and improve TOP compliance rates in our endoscopy unit using remote video auditing (RVA). METHODS: This was a single-center, prospective, pilot initiative in an endoscopy unit at a tertiary care academic medical center. Video cameras with offsite monitoring were installed in each procedure room in our endoscopy suite in November 2016. Baseline TOP compliance rates were audited with RVA over a 2-month period. A multidisciplinary quality improvement team reviewed the data, identified barriers to the TOP, and implemented actionable items in January 2017. TOP compliance rates were again monitored via RVA, and data were collected through October 2018. Pre- and postintervention TOP compliance rates were compared. RESULTS: Over the baseline period, 692 procedures were audited and TOP compliance documented. Baseline TOP compliance rate was 69.6%. Identifiable barriers to TOP compliance included a lack of designated team member to lead TOP, inconsistent documentation of TOP, irrelevant safety checklist items not applicable to endoscopic procedures, and lack of patient safety culture. Actionable items implemented in response to these barriers included designation of a TOP leader, visual indication of initiation of TOP, creation of a concise endoscopy-specific safety checklist, and formal notification/education of the entire endoscopy team. Postintervention TOP compliance rates were then audited from January 2017 to October 2018 and included 12,008 procedures. The mean TOP compliance rate significantly improved from baseline (95.3% vs 69.6%; 95% confidence interval, 22.4-29.3; P < .0001). Additionally, the improvement was maintained throughout the entire postintervention observation period. CONCLUSIONS: TOP compliance rates significantly improved in our endoscopy unit through the use of RVA and implementation of 4 actionable items. Future studies should evaluate the reproducibility of this method in other endoscopy units.

Patterns of poisoning exposure at different ages: the 2015 annual report of the Australian Poisons Information Centres.

OBJECTIVES: To characterise the types of calls received by Australian Poisons Information Centres (PICs) in Australia, and to analyse poisoning exposures by age group, circumstances of exposure, and the types of substances involved. Design, setting: Retrospective analysis of call records from all four Australian PICs (national coverage). MAIN OUTCOME MEASURES: Basic demographic information; exposure circumstances, substance types involved in each age group; recommendations for management (eg, stay at home, go to hospital). RESULTS: There were 204 906 calls to Australian PICs in 2015, 69.0% from the general public, 27.9% from health professionals; 16.2% of calls originated from hospitals. 170 469 calls (including re-calls about an exposure) related to 164 363 poison exposure events; 64.4% were unintentional, 18.1% were the consequences of medication error, and 10.7% involved deliberate self-poisoning. Most exposures were of 20-74-year-old adults (40.1%) or 1-4-year-old toddlers (36.0%). The PICs advised callers to stay at home for 67.4% of exposures, and to present to hospital for 10.9%. The most common substances involved in exposures overall were household cleaners (10.2%) and paracetamol-containing analgesics (7.3%). Exposures of infants and toddlers were most frequently to household cleaning substances (17.8%, 15.3% respectively) and personal care items (6.6%, 7.3%); callers were usually advised to stay at home (88.5%, 86.4%). Deliberate self-poisoning (49.1%) and hospital referral (23.9%) were most frequent for adolescents. Exposures of adults (20-74 years) frequently involved psychotropic pharmaceuticals (17.8%) or painkillers (15.1%). Exposures in adults over 74 were typically medication errors involving cardiovascular (23.6%), anticoagulant (4.6%), or antidiabetic (4.1%) medications. CONCLUSIONS: Poisoning is a significant public health problem throughout life, but the nature of the hazards differs markedly between age groups. PIC data could inform strategic public health interventions that target age-specific poisoning hazards.

Disturbance and productivity interactions mediate stability of forest composition and structure.

Fire is returning to many conifer-dominated forests where species composition and structure have been altered by fire exclusion. Ecological effects of these fires are influenced strongly by the degree of forest change during the fire-free period. Response of fire-adapted species assemblages to extended fire-free intervals is highly variable, even in communities with similar historical fire regimes. This variability in plant community response to fire exclusion is not well understood; however, ecological mechanisms such as individual species' adaptations to disturbance or competition and underlying site characteristics that facilitate or impede establishment and growth have been proposed as potential drivers of assemblage response. We used spatially explicit dendrochronological reconstruction of tree population dynamics and fire regimes to examine the influence of historical disturbance frequency (a proxy for adaptation to disturbance or competition), and potential site productivity (a proxy for underlying site characteristics) on the stability of forest composition and structure along a continuous ecological gradient of pine, dry mixed-conifer, mesic mixed-conifer, and spruce-fir forests following fire exclusion. While average structural density increased in all forests, species composition was relatively stable in the lowest productivity pine-dominated and highest productivity spruce-fir-dominated sites immediately following fire exclusion and for the next 100 years, suggesting site productivity as a primary control on species composition and structure in forests with very different historical fire regimes. Species composition was least stable on intermediate productivity sites dominated by mixed-conifer forests, shifting from primarily fire-adapted species to competition-adapted, fire-sensitive species within 20 years of fire exclusion. Rapid changes to species composition and stand densities have been interpreted by some as evidence of high-severity fire. We demonstrate that the very different ecological process of fire exclusion can produce similar changes by shifting selective pressures from disturbance-mediated to productivity-mediated controls. Restoring disturbance-adapted species composition and structure to intermediate productivity forests may help to buffer them against projected increasing temperatures, lengthening fire seasons, and more frequent and prolonged moisture stress. Fewer management options are available to promote adaptation in forest assemblages historically constrained by underlying site productivity.

A decade of Australian methotrexate dosing errors.

OBJECTIVE: Accidental daily dosing of methotrexate can result in life-threatening toxicity. We investigated methotrexate dosing errors reported to the National Coronial Information System (NCIS), the Therapeutic Goods Administration Database of Adverse Event Notifications (TGA DAEN) and Australian Poisons Information Centres (PICs). DESIGN AND SETTING: A retrospective review of coronial cases in the NCIS (2000-2014), and of reports to the TGA DAEN (2004-2014) and Australian PICs (2004-2015). Cases were included if dosing errors were accidental, with evidence of daily dosing on at least 3 consecutive days. MAIN OUTCOME MEASURES: Events per year, dose, consecutive days of methotrexate administration, reasons for the error, clinical features. RESULTS: Twenty-two deaths linked with methotrexate were identified in the NCIS, including seven cases in which erroneous daily dosing was documented. Methotrexate medication error was listed in ten cases in the DAEN, including two deaths. Australian PIC databases contained 92 cases, with a worrying increase seen during 2014-2015. Reasons for the errors included patient misunderstanding and incorrect packaging of dosette packs by pharmacists. The recorded clinical effects of daily dosage were consistent with those previously reported for methotrexate toxicity. CONCLUSION: Dosing errors with methotrexate can be lethal and continue to occur despite a number of safety initiatives in the past decade. Further strategies to reduce these preventable harms need to be implemented and evaluated. Recent suggestions include further changes in packet size, mandatory weekly dosing labelling on packaging, improving education, and including alerts in prescribing and dispensing software.

The American Dental Hygienists' Association Leads the Profession into 21st Century Workforce Opportunities.

UNLABELLED: With the dental hygiene profession undergoing tremendous transformation as greater and more diverse workplace opportunities present themselves, the American Dental Hygienists' Association (ADHA) is leading the effort to ensure that dental hygienists are prepared to take advantage of these growing opportunities in today's constantly evolving health care landscape. BACKGROUND AND PURPOSE: ADHA's vision statement calls for the integration of dental hygienists into the health care delivery system as essential primary care providers to expand access to oral health care. This article discusses changes in dental hygiene curriculum, as well as how changes in the health care environment and legislative outcomes are impacting workplace opportunities for dental hygienists in the 21st century. METHOD: Research from ADHA's Transforming Dental Hygiene Education and the Profession for the 21st Century white paper and other oral health-related literature, ADHA policies, and ADHA survey research describe the evolving dental hygiene workplace environment. The article discusses trends in education, health care, legislative and regulatory practice, and societal need that are creating new workforce opportunities for the dental hygiene profession. CONCLUSION: With rapid change in both the oral and overall health care environments, transformation in dental hygiene curriculum and competencies, and more states allowing the public to have direct access to dental hygienists, dental hygiene professionals are expanding their presence into all aspects of the health care system. ADHA is leading this effort to help dental hygienists provide that care by expanding workforce opportunities and allowing dental hygienists to practice to the full extent of their scope. The dental hygiene profession must be prepared and ready to embrace these opportunities. In doing so, new career pathways will be available for dental hygiene professionals that will also improve the public's access to oral health care.

Advancing education in dental hygiene.

UNLABELLED: The changing health care environment and societal imperatives indicate the need for transformative change within the dental hygiene profession to serve the emerging needs of the public. The American Dental Hygienists' Association is leading the way toward meaningful change. BACKGROUND AND PURPOSE: The American Dental Hygienists' Association (ADHA) has as its vision the integration of dental hygienists into the health care delivery system as essential primary care providers to expand access to oral health care. This article provides data on current dental hygiene education programs and those in development. Also included is a discussion regarding how the dental hygiene profession can better serve the health and wellness needs of society by transforming the way graduates are prepared for the future. METHOD: ADHA's dental hygiene survey center data, policies and a futuristic analysis plus a review of the professional literature describe the current state of dental hygiene education and the profession. A discussion of societal, health care and educational trends that creates the imperative for transformation of the dental hygiene profession is provided. CONCLUSIONS: Ultimately, the purpose of advancing education in dental hygiene is to achieve better oral and overall health for more people. The profession's responsibility to the public includes evaluating its own ability to provide care and taking the steps necessary to ensure its maximum effectiveness. ADHA is leading this process for dental hygienists in diverse ways. It is imperative that the dental hygiene profession understands and embraces the changing health care environment. Through open dialog and the sharing of evidence the professional path will be determined along with forward movement for the benefit of society and the dental hygiene profession.

Dental Hygiene and Direct Access to Care: Past and present.

The American Dental Hygienists' Association (ADHA) defines direct access as the ability of a dental hygienist to initiate treatment based on their assessment of patient's needs without the specific authorization of a dentist, treat the patient without the physical presence of a dentist, and maintain a provider-patient relationship. In 2000 there were nine direct access states; currently there are 42 states that have authorized some form of direct access. The ADHA has been instrumental in these legislative initiatives through strong advocacy efforts. While research and data support the benefits of direct preventive/therapeutic care provided by dental hygienists, many barriers remain. This paper chronicles key partnerships which have influenced and advocated for direct access and the recognition of dental hygienists as primary health care providers. The National Governors Association (NGA) released a report in 2014 suggesting that dental hygienists be "deployed" outside of dental offices as one strategy to increase access to oral health care along with reducing restrictive dental practice acts and increasing the scope of practice for dental hygienists. The December 2021 release of the National Institutes of Health report, Oral Health in America, further supports greater access to dental hygiene preventive/therapeutic care. This paper also reflects on opportunities and barriers as they relate to workforce policy, provides examples of effective state policies, and illustrates an educational curriculum specifically created to prepare dental hygienists to provide oral health services in settings outside of the dental office. Dental hygiene education must ensure that graduates are future-ready as essential health care providers, prepared to deliver direct access to dental hygiene care.

Infection Prevention and Control Practices of Dental Hygienists in the United States During the COVID-19 Pandemic: A longitudinal study.

Purpose: The SARS-CoV-2 virus continues to mutate, and the COVID-19 pandemic remains a global health crisis. The purpose of this longitudinal study was to continue to analyze the use of infection prevention and control practices (IPC) and personal protective equipment (PPE) by dental hygienists in the United States (US) during the COVID-19 pandemic.Methods: Web-based surveys on COVID-19 related health, IPC, and PPE were administered monthly to a panel of US licensed dental hygienists (n=6,976) from September 2020 to August 2021. Trends over time and predictors of IPC and PPE use were estimated using Stata 17.0 xt commands and multilevel multivariable logistic regression. Linear regression modeling for trends in time and tests for changes in trends were conducted (Joinpoint Regression Program, Version 4.9.0.0).Results: Almost all practicing dental hygienists (99.9%, 14,926 observations) reported COVID-19 specific IPC in place at their primary dental practice. Consistently >96% of dental hygienists reported operatory disinfection and staff masking over the study period. Patient face masking and physical protections such as barriers or air filtration increased in use over time, then declined in spring 2021. Screening or interviewing patients before appointments, checking patient temperatures before treatment, checking staff temperatures at shift start, disinfecting frequently touched surfaces, and encouraging distance between patients were reported by >85% of respondents until March 2021, at which point significant decreases were observed. Wearing a mask or respirator and eye protection during patient care consistently rose over time from September 2020 (77.1%) to August 2021 (81.4%). Always wearing a N95 or equivalently protective respirators during aerosol generating procedures peaked in 2/2021 and declined thereafter. Dental practice setting, supply of respirators, COVID-19 vaccination, and COVID-19 community transmission level were significantly associated with IPC and PPE use.Conclusion: Most US dental hygienists reported always wearing masks and eye protection during patient care and a variety of IPC types have been instituted to reduce the risk of COVID-19 transmission in dental practice settings. However, the use of N95 or equivalent respirators and some additional IPC methods declined during 2021.

COVID-19 Vaccine Intention and Hesitancy of Dental Hygienists in the United States.

Purpose: Vaccinations represent an important public health tool for mitigating dangerous diseases; nevertheless, there is concern and hesitancy regarding vaccinations including those for COVID-19. The purpose of this study was to determine the intentions and hesitancy among dental hygienists in the United States (US) toward COVID-19 vaccination.Methods: Dental hygienists in the US were surveyed from 1/4/21 to 8/16/21 regarding their intentions to get vaccinated and whether they received a COVID-19 vaccine. The vaccination questions were part of an anonymous, ongoing longitudinal web-based survey of dental hygienists' employment and infection control trends. Willingness or actual COVID-19 vaccination versus vaccine hesitancy were analyzed by differences in demographic characteristics using multivariable logistic regression and X2 and Fisher's exact tests.Results: Full COVID-19 vaccination rates in US dental hygienists rose sharply from 2/5/21 to 3/5/21 (26.0% to 53.9%) and leveled off to 75.4% by 8/30/21. The highest rates of vaccine hesitancy were among dental hygienists aged 26-39 years and those who had contracted COVID-19 during the time of the survey. The lowest vaccination hesitancy rates were seen among Non-Hispanic Asians and individuals 65+. When controlling for age, race/ethnicity, and years practiced, dental hygienists who had contracted COVID-19 had higher odds of being vaccine hesitant (adjusted Odds Ratio (aOR): 1.847, 95% Confidence Interval (CI): 1.274, 2.678). Having contracted COVID-19 was also associated with respondents changing from being hesitant to be vaccinated to being willing to be vaccinated (aOR: 4.071, 95% CI: 1.652, 10.030).Conclusion: Although vaccine acceptance is high among dental hygienists in the US, vaccine hesitancy remains an ongoing concern. Dental hygienists are key prevention specialists who should promote adherence to vaccination recommendations for the health of the public. Further education in virology, epidemiology, and vaccination education is recommended.

Employment Patterns of Dental Hygienists in the United States During the COVID-19 Pandemic: An update.

Purpose: Despite recovery in dental practices' patient volume, dentists in the United States (US) continue to report difficulties in hiring dental hygienists due to the COVID-19 pandemic. This study updates previous data on US dental hygienists' employment patterns and attitudes concerning returning to work.Methods: Licensed dental hygienists were invited to participate in monthly web-based surveys between September 2020 and August 2021. Employment questions included current and pre-pandemic work status as well as reasons for not currently working as a clinical dental hygienist. Descriptive statistics were used to describe dental hygienists' employment status and reasons for not currently working. Cross tabulation analysis included employment status and reasons for not working by age group.Results: As of August 2021, 4.9% (n=59) of the participants reported that they were not currently employed as a dental hygienist. Most reported that the reason for non-employment as a dental hygienist was voluntary (74.1%; n=43).Safety concerns for self and others were the primary reasons for not returning to work; participants also indicated retirement or that they no longer wished to practice due to the pandemic. However, the percentage of respondents citing insufficient childcare, wanting the COVID-19 vaccine but not obtaining it, and having an underlying health condition, decreased between the beginning and the conclusion of the study.Conclusion: A measurable degree of hesitancy among US dental hygienists to return to work has persisted over a year and a half into the pandemic and may continue despite some improvements in workplace safety and vaccine uptake. Future research should examine workforce levels after the pandemic resolves.

United States Dental Health Care Workers' Mental Health During the COVID-19 Pandemic.

Purpose: The purpose of this study was to assess the prevalence of anxiety and depression symptoms and understand factors influencing mental health among dental health care workers (DHCWs) in the United States (US) during the COVID-19 pandemic.Methods: Beginning in June 2020, dentists (DDS) and dental hygienists (DH) in the US were invited to participate monthly in an anonymous, longitudinal, web-based survey. The Patient Health Questionaire-4 (PHQ-4) was used to estimate rates of anxiety and depression symptoms. Changes in mental health over time and differences by demographic and practice characteristics, COVID-19 community transmission level and COVID-19 vaccination status were tested using χ2 tests and multilevel multivariable logistic regression.Results: A total of 8,902 DHCWs (DH, DDS) participated in the survey for a response rate of 6.7%. Anxiety symptom rates peaked in November 2020 (28% DH; 17% DDS) and declined to 12% for both professions in May 2021. Depression symptoms were highest in December 2020 (17% DH; 10% DDS) and declined to 8% in May 2021. Controlling for gender, age, race, ethnicity and community COVID-19 transmission levels, DDS respondents had lower odds of anxiety symptoms (aOR 0.82; 95% CI 0.70 to 0.95) and depression symptoms (aOR 0.79; 95% CI 0.67 to 0.93) than DHs. Compared to vaccinated respondents, DHCWs who were unvaccinated but were planning on getting vaccinated had significantly higher rates of anxiety (aOR 1.71; 95% CI 1.20 to 2.44) and depression symptoms (aOR 1.57; CI 1.07 to 2.29).Conclusions: The mental health status of DHCWs fluctuated during the COVID-19 pandemic. Anxiety and depression were associated with the demographic and professional characteristics of the DHCW as well as the perceived risk of COVID-19 infection. Mental health support should be made available for all DHCWs.

US dental health care workers' mental health during the COVID-19 pandemic.

BACKGROUND: This study was designed to assess the prevalence of anxiety and depression symptoms and understand factors influencing mental health among dental health care workers (DHCWs) during the COVID-19 pandemic. METHODS: Beginning in June 2020, 8,902 DHCWs participated monthly in an anonymous longitudinal, web-based survey (response rate, 6.7%). The Patient Health Questionnaire-4 was used to estimate rates of anxiety and depression symptoms. Changes in mental health over time and differences by demographic and practice characteristics, COVID-19 community transmission level, and COVID-19 vaccination status were tested using χ2 tests and multilevel multivariable logistic regression. RESULTS: Anxiety symptom rates peaked in November 2020 (28% of dental hygienists, 17% of dentists) and declined to 12% for both professions in May 2021. Depression symptom rates were highest in December 2020 (17% of dental hygienists, 10% of dentists) and declined to 8% in May 2021. Controlling for gender, age, race or ethnicity, and COVID-19 community transmission level, the authors found that dentists had significantly lower odds of anxiety symptoms (adjusted odds ratio [aOR], 0.82; 95% CI, 0.70 to 0.95) and depression symptoms (aOR, 0.79; 95% CI, 0.67 to 0.93) than dental hygienists. Compared with vaccinated respondents, those who were unvaccinated but planning on getting vaccinated had significantly higher rates of anxiety (aOR, 1.71; 95% CI, 1.20 to 2.44) and depression (aOR, 1.57; 95% CI, 1.07 to 2.29) symptoms. CONCLUSIONS: DHCWs' mental health fluctuated during the pandemic. Anxiety and depression in DHCWs were associated with demographic and professional characteristics as well as perceived risk of COVID-19. PRACTICAL IMPLICATIONS: Mental health support should be made available for DHCWs. This clinical trial was registered at ClinicalTrials.gov. The registration numbers are NCT04423770 and NCT04542915.

COVID-19 Prevalence and Related Practices among Dental Hygienists in the United States.

Purpose: Throughout the COVID-19 pandemic, health care professionals have been challenged to provide appropriate preventive and therapeutic measures while using precautions to minimize disease transmission. The purpose of this study was to estimate the prevalence of COVID-19 among United States (US) dental hygienists, describe infection prevention and control procedures and any associated trends in mental health.Methods: Registered dental hygienists (RDHs) licensed in the US were invited to participate in a 30-question web-based survey. COVID-19 infection items included probable and confirmed results, COVID-19 related symptoms experienced in the last month, and level of concern about COVID-19 transmission to patients and themselves. The validated Patient Health Questionnaire 4 screened respondents for depression or anxiety. Personal protective equipment (PPE) use when treating patients was assessed. The research protocol and survey were approved by the American Dental Association IRB and registered at clinicaltrials.gov (NCT04542915). Kruskal-Wallis and X2 tests were used to test for associations between PPE use, PPE supply, mental health symptoms, and concern about COVID-19 transmission.Results: As of October 8, 2020, a total of 4,776 dental hygienists from all 50 states and Puerto Rico participated in the study. Respondents reported elevated symptoms of anxiety and depression. Of the respondents, 3.1% (n=149) had ever tested positive or been diagnosed with COVID-19. The majority of respondents (99.1%; n=3,328) who practiced dental hygiene reported their primary dental practice had enhanced infection prevention or control efforts in response to the pandemic. PPE use was significantly associated with years of experience as a dental hygienist, level of concern about COVID-19, and level of PPE supplies available (p-values<0.01), but not type of dental practice (p-value 0.1).Conclusion: As of October 2020, the estimated prevalence rate of dental hygienists in the US having had COVID-19 was low. There is a need for further support for dental hygienists' use of PPE and mental health.

Employment Patterns of Dental Hygienists in the United States During the COVID-19 Pandemic.

Purpose: The COVID-19 pandemic has led to drops in patient volume and staffing in dental practices in the United States (US). This study aimed to provide insights on dental hygienists' employment patterns as well as their attitudes toward working as dental hygienists during a pandemic.Methods: Licensed dental hygienists were invited to participate in a web-based 30-question survey between September 29 and October 8, 2020. Employment questions included current and pre-pandemic work status, reasons for not currently working as a dental hygienist, and estimated levels of personal protective equipment (PPE) in the primary work location. All statistical analysis was conducted in Qualtrics Core XM; cross tabulation was used to examine dental hygienist working patterns and attitudes by age, practice PPE supply, and other factors.Results: The COVID-19 pandemic has led to an estimated 8% reduction in dental hygienist employment. The majority (59.1%, n=205) of this reduction is voluntary, with the main reason being general concerns over COVID-19 (48.3%, n=100). Other reasons include issues surrounding childcare and concerns over safety measures in the workplace. Dental hygienists aged 65 and older were most likely to have left the workforce voluntarily. More than half of respondents reported that their work locations had more than a two-week supply of most PPE items, although about 10% did not know supply levels. Dental hygienists working in settings with lower supplies of PPE were more concerned with COVID-19 transmission risk to themselves or to patients.Conclusion: COVID-19 has led to a reduction in the dental hygienist workforce that is likely to persist until the pandemic passes.The dental hygienist labor market has tightened and employers may continue to experience difficulties in filling vacant dental hygienist positions until the pandemic subsides. There is also likely to be a longer term, yet smaller, impact on dental hygiene employment levels.

Paediatric frequent attenders at emergency departments: a linked-data population study.

AIM: To characterise the phenomena of paediatric frequent attenders (FAs) to emergency departments (EDs) in Perth. METHODS: A linked data population study of all children (<15 years) attending Perth hospital EDs between 1 July 2000 and 31 December 2006. FAs attending five or more times annually were assessed for demographic characteristics, mode of arrival, urgency, clinical conditions and disposition by frequency of attendance. RESULTS: Over 6.5 years, 229, 883 children contributed to 378, 068 annualised chains of events (mean 1.5). Most children (98.2%) attended EDs less than five times a year. The more frequently children attended, the more likely they were to be male, younger, self-referred, have respiratory or infectious disorders, and to arrive by ambulance. Characteristics of those attending 0-4 (n= 371 171) and 5-9 (n= 6405) times per year were broadly similar, while those attending 10-19 times per year (n= 461) were more urgent, had a higher frequency of respiratory disease and higher admission rates (all P < 0.001). Those attending more than 20 times a year (n= 31) had serious chronic illness. CONCLUSIONS: Frequent attenders of 5-9 times a year may be no sicker or more in need of hospital services than those who attend less frequently. The preponderance of respiratory and infectious disorders across all FA groups suggests these could be the focus of further research. We advocate a holistic approach to take into account parental expectations, and a systems approach to change ED attendance behaviour.