Category: Statistics

BMC Health Serv Res. 2023 Jun 22;23(1):675. doi: 10.1186/s12913-023-09669-0.

ABSTRACT

BACKGROUND: The COVID-19 pandemic has resulted in profound and far-reaching impacts on maternal and newborn care and outcomes. As part of the ASPIRE COVID-19 project, we describe processes and outcome measures relating to safe and personalised maternity care in England which we map against a pre-developed ASPIRE framework to establish the potential impact of the COVID-19 pandemic for two UK trusts.

METHODS: We undertook a mixed-methods system-wide case study using quantitative routinely collected data and qualitative data from two Trusts and their service users from 2019 to 2021 (start and completion dates varied by available data). We mapped findings to our prior ASPIRE conceptual framework that explains pathways for the impact of COVID-19 on safe and personalised care.

RESULTS: The ASPIRE framework enabled us to develop a comprehensive, systems-level understanding of the impact of the pandemic on service delivery, user experience and staff wellbeing, and place it within the context of pre-existing challenges. Maternity services experienced some impacts on core service coverage, though not on Trust level clinical health outcomes (with the possible exception of readmissions in one Trust). Both users and staff found some pandemic-driven changes challenging such as remote or reduced antenatal and community postnatal contacts, and restrictions on companionship. Other key changes included an increased need for mental health support, changes in the availability and uptake of home birth services and changes in induction procedures. Many emergency adaptations persisted at the end of data collection. Differences between the trusts indicate complex change pathways. Staff reported some removal of bureaucracy, which allowed greater flexibility. During the first wave of COVID-19 staffing numbers increased, resolving some pre-pandemic shortages: however, by October 2021 they declined markedly. Trying to maintain the quality and availability of services had marked negative consequences for personnel. Timely routine clinical and staffing data were not always available and personalised care and user and staff experiences were poorly captured.

CONCLUSIONS: The COVID-19 crisis magnified pre-pandemic problems and in particular, poor staffing levels. Maintaining services took a significant toll on staff wellbeing. There is some evidence that these pressures are continuing. There was marked variation in Trust responses. Lack of accessible and timely data at Trust and national levels hampered rapid insights. The ASPIRE COVID-19 framework could be useful for modelling the impact of future crises on routine care.

PMID:37349751 | DOI:10.1186/s12913-023-09669-0

J Orthop Surg Res. 2023 Jun 22;18(1):447. doi: 10.1186/s13018-023-03920-4.

ABSTRACT

BACKGROUND: Continuous use of glucocorticoids (GCs) has become the primary cause of secondary osteoporosis. Bisphosphonate drugs were given priority over denosumab and teriparatide in the 2017 American College of Rheumatology (ACR) guidelines but have a series of shortcomings. This study aims to explore the efficacy and safety of teriparatide and denosumab compared with those of oral bisphosphonate drugs.

METHODS: We systematically searched studies included in the PubMed, Web of Science, Embase, and Cochrane library databases and included randomized controlled trials that compared denosumab or teriparatide with oral bisphosphonates. Risk estimates were pooled using both fixed and random effects models.

RESULTS: We included 10 studies involving 2923 patients who received GCs for meta-analysis, including two drug base analyses and four sensitivity analyses. Teriparatide and denosumab were superior to bisphosphonates in increasing the bone mineral density (BMD) of the lumbar vertebrae [teriparatide: mean difference [MD] 3.98%, 95% confidence interval [CI] 3.61-4.175%, P = 0.00001; denosumab: MD 2.07%, 95% CI 0.97-3.17%, P = 0.0002]. Teriparatide was superior to bisphosphonates in preventing vertebral fractures and increasing hip BMD [MD 2.39%, 95% CI 1.47-3.32, P < 0.00001]. There was no statistically significant difference between serious adverse events, adverse events, and nonvertebral fracture prevention drugs.

CONCLUSIONS: Teriparatide and denosumab exhibited similar or even superior characteristics to bisphosphonates in our study, and we believe that they have the potential to become first-line GC-induced osteoporosis treatments, especially for patients who have previously received other anti-osteoporotic drugs with poor efficacy.

PMID:37349750 | DOI:10.1186/s13018-023-03920-4

World J Surg Oncol. 2023 Jun 22;21(1):189. doi: 10.1186/s12957-023-03061-2.

ABSTRACT

BACKGROUND: Partial nephrectomy (PN) is the gold standard surgical treatment for resectable renal cell carcinoma (RCC) tumors. However, the decision whether a robotic (RAPN) or open PN (OPN) approach is chosen is often based on the surgeon’s individual experience and preference. To overcome the inherent selection bias when comparing peri- and postoperative outcomes of RAPN vs. OPN, a strict statistical methodology is needed.

MATERIALS AND METHODS: We relied on an institutional tertiary-care database to identify RCC patients treated with RAPN and OPN between January 2003 and January 2021. Study endpoints were estimated blood loss (EBL), length of stay (LOS), rate of intraoperative and postoperative complications, and trifecta. In the first step of analyses, descriptive statistics and multivariable regression models (MVA) were applied. In the second step of analyses, to validate initial findings, MVA were applied after 2:1 propensity-score matching (PSM).

RESULTS: Of 615 RCC patients, 481 (78%) underwent OPN vs 134 (22%) RAPN. RAPN patients were younger and presented with a smaller tumor diameter and lower RENAL-Score sum, respectively. Median EBL was comparable, whereas LOS was shorter in RAPN vs. OPN. Both intraoperative (27 vs 6%) and Clavien-Dindo > 2 complications (11 vs 3%) were higher in OPN (both < 0.05), whereas achievement of trifecta was higher in RAPN (65 vs 54%; p = 0.028). In MVA, RAPN was a significant predictor for shorter LOS, lower rates of intraoperative and postoperative complications as well as higher trifecta rates. After 2:1 PSM with subsequent MVA, RAPN remained a statistical and clinical predictor for lower rates of intraoperative and postoperative complications and higher rates of trifecta achievement but not LOS.

CONCLUSIONS: Differences in baseline and outcome characteristics exist between RAPN vs. OPN, probably due to selection bias. However, after applying two sets of statistical analyses, RAPN seems to be associated with more favorable outcomes regarding complications and trifecta rates.

PMID:37349748 | DOI:10.1186/s12957-023-03061-2

J Orthop Surg Res. 2023 Jun 22;18(1):448. doi: 10.1186/s13018-023-03938-8.

ABSTRACT

BACKGROUND: To investigate the radiologic and prognostic outcomes after using arthroscopic-assisted reduction and internal fixation (ARIF) in complex tibial plateau fractures with mid- to long-term follow-up.

METHODS: This retrospective study reviewed complex tibial plateau fractures that underwent ARIF from 1999 to 2019. Radiologic outcomes, including tibial plateau angle (TPA), posterior slope angle (PSA), Kellgren-Lawrence classification and Rasmussen radiologic assessment, were measured and evaluated. The prognosis and complications were assessed by the Rasmussen clinical assessment with a minimum follow-up of 2 years.

RESULTS: Ninety-two consecutive patients (mean age: 46.9 years) with a mean follow-up of 74.8 months (24-180) were included in our series. Using AO classification, there were 20 type C1 fractures, 21 type C2 fractures, and 51 type C3 fractures. All the fractures achieved solid union. TPA was maintained well on average at the last follow-up and showed no significant difference compared to postoperatively (p = 0.208). In the sagittal plane, the mean PSA increased from 9.3 ± 2.9° to 9.6 ± 3.1° (p = 0.092). A statistically significant increase in PSA was also noted in the C3 group (p = 0.044). Superficial or deep infection was noted in 4 cases (4.3%), and total knee arthroplasty (TKA) was performed in 2 cases (2.2%) due to grade 4 osteoarthritis (OA). Ninety (97.8%) and 89 (96.7%) patients had good or excellent results in the Rasmussen radiologic assessment and Rasmussen clinical assessment, respectively.

CONCLUSIONS: The complex tibial plateau fracture could be treated successfully using arthroscopy-assisted reduction and internal fixation. Most patients achieve excellent and good clinical outcomes with low complication rates. In our experience, a higher incidence of increased slope was noted, especially in type C3 fractures. Reduction of the posterior fragment should be done cautiously during the operation.

LEVELS OF EVIDENCE: Level III.

PMID:37349746 | DOI:10.1186/s13018-023-03938-8

Subst Abuse Treat Prev Policy. 2023 Jun 22;18(1):36. doi: 10.1186/s13011-023-00550-1.

ABSTRACT

BACKGROUND: In 2018, Canada legalized recreational cannabis use with the purpose of protecting youth and restricting access. However, concerns have been raised that this objective has not been met as rates of cannabis use among youth aged 16-24 have not declined. Youth cannabis use is associated with various adverse effects including psychosis, anxiety, depression, suicidality, respiratory distress, cannabinoid hyperemesis syndrome, and intoxications. Service providers play a crucial role in addressing youth cannabis use. This study aimed to understand Ontario service providers’ perceptions, practices, and recommendations on youth cannabis use.

METHODS: This mixed method study included a survey and two focus groups. The survey was distributed to mental health service providers serving youth aged 16-24 across Ontario who were given the option to participate in a focus group. The survey included closed and open-ended questions regarding perceptions, practices, and recommendations, while the focus groups explored these categories in greater depth. Descriptive statistics were used to analyze close-ended questions and interpretative content analysis was applied for open-ended questions. Focus group data were analyzed using thematic analysis.

RESULTS: The survey was completed by 160 service providers and 12 participated in two focus groups. Regarding perceptions, 60% of survey participants agreed with legalization, 26% had a strong understanding of medical versus recreational cannabis, 84% believed that cannabis has physical and mental health risks, and 49% perceived stigmatization. Less than half of the survey participants reported screening or assessing cannabis use, 16% stated they are highly familiar with treating cannabis use, and 67% reported that they rarely work with families. Subthemes identified in the focus groups under perceptions included normalization and stigmatization, harms for youth, and stigma, racism, and discrimination. Subthemes under practice included cannabis not being the primary focus, challenges with screening, assessment, and intervention, and referral to specialized services. Both the survey and focus group participants recommended increasing public education, enhancing service provider training, improving regulation and policies, reducing stigma and minimization, improving service access, and providing more culturally responsive services.

CONCLUSION: Youth cannabis use in Canada remains a significant public health concern, necessitating a more comprehensive plan to protect Ontario youth and reduce associated harms.

PMID:37349741 | DOI:10.1186/s13011-023-00550-1

Addict Behav. 2023 Jun 18;145:107779. doi: 10.1016/j.addbeh.2023.107779. Online ahead of print.

ABSTRACT

INTRODUCTION: Transgender and non-binary people use more alcohol and report a greater need for help to reduce their consumption than their cisgender counterparts. They experience anticipated and enacted discrimination when seeking alcohol reduction healthcare. This study aimed to identify any alcohol reduction interventions for trans and non-binary people.

METHODS: A systematic scoping review was completed according to PRISMA-ScR guidelines. Following an extensive search across five databases, two independent reviewers carried out abstract screening, full-text screening, data extraction and quality assessment. Findings were synthesised narratively.

RESULTS: The search generated 1399 unique records. Ten texts were reviewed in full, and the final sample comprised six studies of moderate quality. Included records all reported adaptations of various psychosocial interventions including individual therapies, group therapy, a trans-affirmative clinical environment, and a specialist inpatient rehabilitation service. Four interventions resulted in alcohol reduction with modest effect size. However, the change in alcohol consumption was not statistically significant in two studies. Trans women were disproportionately investigated through the lens of HIV risk reduction.

CONCLUSION: Interventions developed for one population cannot be presumed effective in another, particularly those as heterogeneous as trans and non-binary communities. There is some suggestion that psychosocial interventions adapted for the needs of the trans community are effective in achieving alcohol reduction. However, it is unclear how these will fare with trans men and non-binary people and specialist interventions may be needed.

PMID:37348175 | DOI:10.1016/j.addbeh.2023.107779

J Mech Behav Biomed Mater. 2023 Jun 19;144:105960. doi: 10.1016/j.jmbbm.2023.105960. Online ahead of print.

ABSTRACT

OBJECTIVES: Aim of this study was to determine the forces and moments during simulated initial orthodontic tooth movements using a novel biomechanical test setup.

METHODS: The test setup consisted of an industrial precision robot with a force-torque sensor, a maxillary model and a control computer and software. Forces and moments acting on the corresponding experimental tooth during the motion simulations were dynamically measured for two 0.016″ NiTi round archwires (Sentalloy Light/Sentalloy Medium). Intrusive (#1), rotational (#2) and angular (#3) tooth movements were simulated by a control program based on the principle of force control and executed by the robot. The results were statistically analysed using K-S-test and Mann-Whitney U test with a significance level of α = 5%.

RESULTS: Sentalloy Medium archwires generated higher forces and moments than the Sentalloy Light archwires in all simulations. In simulation #1 the mean initial forces/moments reached 1.442 N/6.781 Nmm for the Light archwires and 1.637 N/9.609 Nmm for the Medium archwires. In movement #2 Light archwires generated mean initial forces/moments of 0.302 N/-8.271 Nmm whereas Medium archwires generated 0.432 N/-9.653 Nmm. Simulation #3 showed mean initial forces/moments of -0.122 N/8.477 Nmm from the Light archwires compared to -0.300 N/11.486 Nmm for the Medium archwires.

SIGNIFICANCE: The measured forces and moments were suitable for initial orthodontic tooth movement in simulations #2 and #3, however inadequate in simulation #1. Reduced archwire dimensions (<0.016″) should be selected for initial leveling of vertical malocclusions.

PMID:37348170 | DOI:10.1016/j.jmbbm.2023.105960

J Mech Behav Biomed Mater. 2023 Jun 1;144:105939. doi: 10.1016/j.jmbbm.2023.105939. Online ahead of print.

ABSTRACT

We propose a computational framework to study the effect of corrosion on the mechanical strength of magnesium (Mg) samples. Our work is motivated by the need to predict the residual strength of biomedical Mg implants after a given period of degradation in a physiological environment. To model corrosion, a mass-diffusion type model is used that accounts for localised corrosion using Weibull statistics. The overall mass loss is prescribed (e.g., based on experimental data). The mechanical behaviour of the Mg samples is modeled by a state-of-the-art Cazacu-Plunkett-Barlat plasticity model with a coupled damage model. This allowed us to study how Mg degradation in immersed samples reduces the mechanical strength over time. We performed a large number of in vitro corrosion experiments and mechanical tests to validate our computational framework. Our framework could predict both the experimentally observed loss of mechanical strength and the ductility due to corrosion for both tension and compression tests.

PMID:37348169 | DOI:10.1016/j.jmbbm.2023.105939

EBioMedicine. 2023 Jun 20;93:104669. doi: 10.1016/j.ebiom.2023.104669. Online ahead of print.

ABSTRACT

BACKGROUND: Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has rapidly spread worldwide in the population since it was first detected in late 2019. The transcription and replication of coronaviruses, although not fully understood, is characterised by the production of genomic length RNA and shorter subgenomic RNAs to make viral proteins and ultimately progeny virions. Observed levels of subgenomic RNAs differ between sub-lineages and open reading frames but their biological significance is presently unclear.

METHODS: Using a large and diverse panel of virus sequencing data produced as part of the Danish COVID-19 routine surveillance together with information in electronic health registries, we assessed the association of subgenomic RNA levels with demographic and clinical variables of the infected individuals.

FINDINGS: Our findings suggest no significant statistical relationship between levels of subgenomic RNAs and host-related factors.

INTERPRETATION: Differences between lineages and subgenomic ORFs may be related to differences in target cell tropism, early virus replication/transcription kinetics or sequence features.

FUNDING: The author(s) received no specific funding for this work.

PMID:37348163 | DOI:10.1016/j.ebiom.2023.104669

Nurse Educ. 2023 Jun 20. doi: 10.1097/NNE.0000000000001471. Online ahead of print.

ABSTRACT

BACKGROUND: First-semester prelicensure nursing students commonly report experiencing math anxiety that negatively affects academic performance and triggers fear of causing patient harm. Students often turn to social media platforms to supplement their learning experience.

PURPOSE: To explore the feasibility of using Instagram tutorials to reduce math anxiety of first-semester prelicensure nursing students.

METHODS: A quasi-experimental descriptive survey design was used to evaluate the utility of posting supplemental math tutorials on Instagram and examined the effect of tutorials on math anxiety levels. A convenience sample of 20 students used the tutorials. Math anxiety levels were evaluated using the Single-Item Math Anxiety Scale.

RESULTS: A statistically significant inverse relationship was observed between math anxiety levels and tutorial use. The Instagram platform was familiar to students and simple to access. Brief tutorials appealed to audio-visual learners.

CONCLUSIONS: Using Instagram-based tutorials is feasible and appears effective in reducing medication math anxiety.

PMID:37348141 | DOI:10.1097/NNE.0000000000001471