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Nevin Manimala Statistics

Health, economic and social burden of tobacco in Latin America and the expected gains of fully implementing taxes, plain packaging, advertising bans and smoke-free environments control measures: a modelling study

Tob Control. 2023 May 4:tc-2022-057618. doi: 10.1136/tc-2022-057618. Online ahead of print.

ABSTRACT

OBJECTIVE: To investigate the tobacco-attributable burden on disease, medical costs, productivity losses and informal caregiving; and to estimate the health and economic gains that can be achieved if the main tobacco control measures (raising taxes on tobacco, plain packaging, advertising bans and smoke-free environments) are fully implemented in eight countries that encompass 80% of the Latin American population.

DESIGN: Markov probabilistic microsimulation economic model of the natural history, costs and quality of life associated with the main tobacco-related diseases. Model inputs and data on labour productivity, informal caregivers’ burden and interventions’ effectiveness were obtained through literature review, surveys, civil registrations, vital statistics and hospital databases. Epidemiological and economic data from January to October 2020 were used to populate the model.

FINDINGS: In these eight countries, smoking is responsible each year for 351 000 deaths, 2.25 million disease events, 12.2 million healthy years of life lost, US$22.8 billion in direct medical costs, US$16.2 billion in lost productivity and US$10.8 billion in caregiver costs. These economic losses represent 1.4% of countries’ aggregated gross domestic products. The full implementation and enforcement of the four strategies: taxes, plain packaging, advertising bans and smoke-free environments would avert 271 000, 78 000, 71 000 and 39 000 deaths, respectively, in the next 10 years, and result in US$63.8, US$12.3, US$11.4 and US$5.7 billions in economic gains, respectively, on top of the benefits being achieved today by the current level of implementation of these measures.

CONCLUSIONS: Smoking represents a substantial burden in Latin America. The full implementation of tobacco control measures could successfully avert deaths and disability, reduce healthcare spending and caregiver and productivity losses, likely resulting in large net economic benefits.

PMID:37142423 | DOI:10.1136/tc-2022-057618

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The Effects of Light Pressure Instrument-Assisted Soft Tissue Mobilization at Different Rates on Grip Strength and Muscle Stiffness in Healthy Individuals

J Sport Rehabil. 2023 May 4:1-6. doi: 10.1123/jsr.2022-0356. Online ahead of print.

ABSTRACT

CONTEXT: Instrument-assisted soft tissue mobilization (IASTM) is a popular myofascial treatment utilized by health care professionals. Currently, there is a lack of research on the effects of a light pressure IASTM treatment on the forearm region. The purpose of this study was to explore the effects of a light pressure IASTM technique at different application rates on grip strength and muscle stiffness. This study was considered exploratory with the goal of establishing methodology for future controlled studies.

DESIGN: Observational pretest and posttest clinical study.

METHODS: Twenty-six healthy adults underwent one light pressure IASTM treatment to their dominant forearm muscles. Participants were allocated to 2 groups of 13 based upon treatment rate: 60 beats per minute and 120 beats per minute. Participants were tested pretreatment and posttreatment for grip strength and tissue stiffness via diagnostic ultrasound. One-way analyses of covariance were used to assess group differences posttreatment for grip strength and tissue stiffness.

RESULTS: Statistically significant posttreatment changes for grip strength and tissue stiffness were not found. Despite the nonstatistical significance, there were small decreases in grip strength and tissue stiffness. Faster (120 beats/min) IASTM application may have produced clinically meaningful decreases in grip strength along with a small decrease in tissue stiffness.

CONCLUSIONS: This report helps to establish methodology for future controlled studies on this topic. Sports medicine professionals should consider these results as exploratory and interpret them with caution. Future research is needed to confirm these findings and begin to postulate possible neurophysiological mechanisms.

PMID:37142408 | DOI:10.1123/jsr.2022-0356

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Nevin Manimala Statistics

Genetic factors affecting survival in Japanese patients with sporadic amyotrophic lateral sclerosis: a genome-wide association study and verification in iPSC-derived motor neurons from patients

J Neurol Neurosurg Psychiatry. 2023 May 4:jnnp-2022-330851. doi: 10.1136/jnnp-2022-330851. Online ahead of print.

ABSTRACT

BACKGROUND: Several genetic factors are associated with the pathogenesis of sporadic amyotrophic lateral sclerosis (ALS) and its phenotypes, such as disease progression. Here, in this study, we aimed to identify the genes that affect the survival of patients with sporadic ALS.

METHODS: We enrolled 1076 Japanese patients with sporadic ALS with imputed genotype data of 7 908 526 variants. We used Cox proportional hazards regression analysis with an additive model adjusted for sex, age at onset and the first two principal components calculated from genotyped data to conduct a genome-wide association study. We further analysed messenger RNA (mRNA) and phenotype expression in motor neurons derived from induced pluripotent stem cells (iPSC-MNs) of patients with ALS.

RESULTS: Three novel loci were significantly associated with the survival of patients with sporadic ALS-FGF1 at 5q31.3 (rs11738209, HR=2.36 (95% CI, 1.77 to 3.15), p=4.85×10-9), THSD7A at 7p21.3 (rs2354952, 1.38 (95% CI, 1.24 to 1.55), p=1.61×10-8) and LRP1 at 12q13.3 (rs60565245, 2.18 (95% CI, 1.66 to 2.86), p=2.35×10-8). FGF1 and THSD7A variants were associated with decreased mRNA expression of each gene in iPSC-MNs and reduced in vitro survival of iPSC-MNs obtained from patients with ALS. The iPSC-MN in vitro survival was reduced when the expression of FGF1 and THSD7A was partially disrupted. The rs60565245 was not associated with LRP1 mRNA expression.

CONCLUSIONS: We identified three loci associated with the survival of patients with sporadic ALS, decreased mRNA expression of FGF1 and THSD7A and the viability of iPSC-MNs from patients. The iPSC-MN model reflects the association between patient prognosis and genotype and can contribute to target screening and validation for therapeutic intervention.

PMID:37142397 | DOI:10.1136/jnnp-2022-330851

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Single-arm studies involving patient-reported outcome data in oncology: a literature review on current practice

Lancet Oncol. 2023 May;24(5):e197-e206. doi: 10.1016/S1470-2045(23)00110-9.

ABSTRACT

Patient-reported outcomes (PROs) are increasingly used in single-arm cancer studies. We reviewed 60 papers published between 2018 and 2021 of single-arm studies of cancer treatment with PRO data for current practice on design, analysis, reporting, and interpretation. We further examined the studies’ handling of potential bias and how they informed decision making. Most studies (58; 97%) analysed PROs without stating a predefined research hypothesis. 13 (22%) of the 60 studies used a PRO as a primary or co-primary endpoint. Definitions of PRO objectives, study population, endpoints, and missing data strategies varied widely. 23 studies (38%) compared the PRO data with external information, most often by using a clinically important difference value; one study used a historical control group. Appropriateness of methods to handle missing data and intercurrent events (including death) were seldom discussed. Most studies (51; 85%) concluded that PRO results supported treatment. Conducting and reporting of PROs in cancer single-arm studies need standards and a critical discussion of statistical methods and possible biases. These findings will guide the Setting International Standards in Analysing Patient-Reported Outcomes and Quality of Life Data in Cancer Clinical Trials-Innovative Medicines Initiative (SISAQOL-IMI) in developing recommendations for the use of PRO-measures in single-arm studies.

PMID:37142381 | DOI:10.1016/S1470-2045(23)00110-9

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Introduction to machine learning

Am J Orthod Dentofacial Orthop. 2023 May;163(5):732-734. doi: 10.1016/j.ajodo.2023.02.005.

NO ABSTRACT

PMID:37142356 | DOI:10.1016/j.ajodo.2023.02.005

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Nevin Manimala Statistics

Digital game-based interventions for cognitive training in healthy adults and adults with cognitive impairment: protocol for a two-part systematic review and meta-analysis

BMJ Open. 2023 May 4;13(5):e071059. doi: 10.1136/bmjopen-2022-071059.

ABSTRACT

INTRODUCTION: Digital game-based training interventions are scalable solutions that may improve cognitive function for many populations. This protocol for a two-part review aims to synthesise the effectiveness and key features of digital game-based interventions for cognitive training in healthy adults across the life span and adults with cognitive impairment, to update current knowledge and impact the development of future interventions for different adult subpopulations.

METHODS AND ANALYSIS: This systematic review protocol follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols guidelines. A systematic search was performed in PubMed, Embase, CINAHL, Cochrane Library, Web of Science, PsycINFO and IEEE Explore on 31 July 2022 for relevant literature published in English from the previous 5 years. Experimental, observational, exploratory, correlational, qualitative and mixed methods studies will be eligible if they report at least one cognitive function outcome and include a digital game-based intervention intended to improve cognitive function. Reviews will be excluded but retained to search their reference lists for other relevant studies. All screening will be done by at least two independent reviewers. The appropriate Joanna Briggs Institute Critical Appraisal Tool, according to the study design, will be applied to perform the risk of bias assessment. Outcomes related to cognitive function and digital game-based intervention features will be extracted. Results will be categorised by adult life span stages in the healthy adult population for part 1 and by neurological disorder in part 2. Extracted data will be analysed quantitatively and qualitatively, according to study type. If a group of sufficiently comparable studies is identified, we will perform a meta-analysis applying the random effects model with consideration of the I2 statistic.

ETHICS AND DISSEMINATION: Ethics approval is not applicable for this study since no original data will be collected. The results will be disseminated through peer-reviewed publications and conference presentations.

PROSPERO REGISTRATION NUMBER: CRD42022351265.

PMID:37142320 | DOI:10.1136/bmjopen-2022-071059

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Holistic needs assessment in outpatient cancer care: a randomised controlled trial

BMJ Open. 2023 May 4;13(5):e066829. doi: 10.1136/bmjopen-2022-066829.

ABSTRACT

DESIGN: Analyst blinded, parallel, multi-centre, randomised controlled trial (RCT).

PARTICIPANTS: People with confirmed diagnoses of cancer (head and neck, skin or colorectal) attending follow-up consultation 3 months post-treatment between 2015 and 2020.

INTERVENTION: Holistic needs assessment (HNA) or care as usual during consultation.

OBJECTIVE: To establish whether incorporating HNA into consultations would increase patient participation, shared decision making and postconsultation self-efficacy.

OUTCOME MEASURES: Patient participation in the consultations examined was measured using (a) dialogue ratio (DR) and (b) the proportion of consultation initiated by patient. Shared decision making was measured with CollaboRATE and self-efficacy with Lorig Scale. Consultations were audio recorded and timed.

RANDOMISATION: Block randomisation.

BLINDING: Audio recording analyst was blinded to study group.

RESULTS: 147 patients were randomised: 74 control versus 73 intervention.

OUTCOME: No statistically significant differences were found between groups for DR, patient initiative, self-efficacy or shared decision making. Consultations were on average 1 min 46 s longer in the HNA group (respectively, 17 m 25 s vs 15 min 39 s).

CONCLUSION: HNA did not change the amount of conversation initiated by the patient or the level of dialogue within the consultation. HNA did not change patient sense of collaboration or feelings of self-efficacy afterwards. HNA group raised more concerns and proportionally more emotional concerns, although their consultations took longer than treatment as usual.

IMPLICATIONS FOR PRACTICE: This is the first RCT to test HNA in medically led outpatient settings. Results showed no difference in the way the consultations were structured or received. There is wider evidence to support the roll out of HNA as part of a proactive, multidisciplinary process, but this study did not support medical colleagues facilitating it.

TRIAL REGISTRATION NUMBER: NCT02274701.

PMID:37142317 | DOI:10.1136/bmjopen-2022-066829

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Incidence and predictors of perioperative mortality in a low-resource country, Ethiopia: a prospective follow-up study

BMJ Open. 2023 May 4;13(5):e069768. doi: 10.1136/bmjopen-2022-069768.

ABSTRACT

OBJECTIVE: This study aimed to assess the incidence and identify predictors of perioperative mortality among the adult age group at Tibebe Ghion Specialised Hospital.

DESIGN: A single-centre prospective follow-up study.

SETTING: A tertiary hospital in North West Ethiopia.

PARTICIPANTS: We enrolled 2530 participants who underwent surgery in the current study. All adults aged 18 and above were included except those with no telephone.

PRIMARY OUTCOME MEASURES: The primary outcome was time to death measured in days from immediate postoperative time up to the 28th day following surgery.

RESULT: A total of 2530 surgical cases were followed for 67 145 person-days. There were 92 deaths, with an incidence rate of 1.37 (95% CI 1.11 to 1.68) deaths per 1000 person-day observations. Regional anaesthesia was significantly associated with lower postoperative mortality (adjusted hazard ratio (AHR) 0.18, 95% CI 0.05 to 0.62). Patients aged ≥65 years (AHR 3.04, 95% CI 1.65 to 5.75), American Society of Anesthesiologist (ASA) physical status III (AHR 2.41, 95% CI 1.1.13 to 5.16) and IV (AHR 2.74, 95% CI 1.08 to 6.92), emergency surgery (AHR 1.85, 95% CI 1.02 to 3.36) and preoperative oxygen saturation <95% (AHR 3.14, 95% CI 1.85 to 5.33) were significantly associated with a higher risk of postoperative mortality.

CONCLUSION: The postoperative mortality rate at Tibebe Ghion Specialised Hospital was high. Age ≥65, ASA physical status III and IV, emergency surgery, and preoperative oxygen saturation <95% were significant predictors of postoperative mortality. Patients with the identified predictors should be offered targeted treatment.

PMID:37142313 | DOI:10.1136/bmjopen-2022-069768

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Cohort profile: The Swedish Tattoo and Body Modifications Cohort (TABOO)

BMJ Open. 2023 May 4;13(5):e069664. doi: 10.1136/bmjopen-2022-069664.

ABSTRACT

PURPOSE: The Swedish Tattoo and Body Modifications Cohort (TABOO) cohort was established to provide an infrastructure for epidemiological studies researching the role of tattoos and other body modifications as risk factors for adverse health outcomes. It is the first population-based cohort with detailed exposure assessment of decorative, cosmetic, and medical tattoos, piercing, scarification, henna tattoos, cosmetic laser treatments, hair dyeing, and sun habits. The level of detail in the exposure assessment of tattoos allows for investigation of crude dose-response relationships.

PARTICIPANTS: The TABOO cohort includes 13 049 individuals that participated in a questionnaire survey conducted in 2021 (response rate 49%). Outcome data are retrieved from the National Patient Register, the National Prescribed Drug Register and the National Cause of Death Register. Participation in the registers is regulated by Swedish law, which eliminates the risk of loss to follow-up and associated selection bias.

FINDINGS TO DATE: The tattoo prevalence in TABOO is 21%. The cohort is currently used to clarify the incidence of acute and long-lasting health complaints after tattooing based on self-reported data. Using register-based outcome data, we are investigating the role of tattoos as a risk factor for immune-mediated disease, including hypersensitisation, foreign body reactions and autoimmune conditions.

FUTURE PLANS: The register linkage will be renewed every third year to update the outcome data, and we have ethical approval to reapproach the responders with additional questionnaires.

PMID:37142309 | DOI:10.1136/bmjopen-2022-069664

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Risk of malignant lymphomas in patients with inflammatory bowel disease: a population-based cohort study

BMJ Open Gastroenterol. 2023 May;10(1):e001037. doi: 10.1136/bmjgast-2022-001037.

ABSTRACT

OBJECTIVE: To estimate the risk of non-Hodgkin’s lymphoma (NHL) and Hodgkin’s lymphoma (HL) in patients with inflammatory bowel disease (IBD).

DESIGN: We undertook a two-country population cohort study with all patients diagnosed with IBD in Norway and Sweden from 1987 and 1993 through 2015 and 2016, respectively, and analysed the risk of NHL and HL. In Sweden, we also analysed prescriptions of thiopurines and anti-tumour necrosis factor (TNF)-α therapy from 2005. We calculated standardised incidence ratios (SIRs) with 95% CIs using the general populations as reference.

RESULTS: Among 131 492 patients with IBD with a medium follow-up of 9.6 years, we identified 369 cases of NHL and 44 cases of HL. The SIR of NHL was 1.3 (95% CI 1.1 to 1.5) in ulcerative colitis and 1.4 (95% CI 1.2 to 1.7) in Crohn’s disease. We found no compelling heterogeneity in analyses stratified by patient characteristics. We found a similar pattern and magnitude of excess risks for HL. At 10 years, cumulative incidence was 0.26% (95% CI 0.23% to 0.30%) and 0.06% (95% CI 0.04% to 0.08%) for NHL and HL, respectively. Higher excess risks were found among patients with NHL with concomitant primary sclerosing cholangitis (SIR 3.4; 95% CI 2.1 to 5.2) and in those prescribed thiopurines alone (SIR 2.8; 95% CI 1.4 to 5.7) or with anti-TNF-α agents (SIR 5.7; 95% CI 2.7 to 11.9).

CONCLUSION: Patients with IBD have a statistically significant increased risk of malignant lymphomas compared with the general population, but the absolute risk remains low.

PMID:37142293 | DOI:10.1136/bmjgast-2022-001037