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Nevin Manimala Statistics

Barthel’s Index: a better predictor for COVID-19 mortality than comorbidities

Tuberc Respir Dis (Seoul). 2022 Jun 23. doi: 10.4046/trd.2022.0006. Online ahead of print.

ABSTRACT

BACKGROUND: The most consistent identified mortality determinants for the new coronavirus 2019 infection (COVID-19) are aging, male sex, cardiovascular/respiratory diseases, and cancer. They were determined from heterogeneous cohorts that included patients with different disease severity and previous condition. The main goal of our study was to test if activities of daily living (ADL) dependence measured by Barthel’s index could be a predictor for COVID-19 mortality.

METHODS: Prospective cohort study with a consecutive sample of 340 COVID-19 patients representing patients from all over the Northern region of Portugal from 10/2020 to 03/2021. Mortality risk factors were determined controlling for demographics, activities of daily living (ADL) dependence, admission time, comorbidities, clinical manifestations, and delay-time for diagnosis. Central tendency measures were used to analyze continuous variables and absolute numbers (proportions) for categorical variables. For univariable analysis we used T-Test/Chi-Square/Fisher Exact Test as appropriate (α=0.05). Multivariable analysis was performed using logistic regression. Statistical software: IBM®SPSS®27.

RESULTS: The cohort included 340 patients (55.3% females, mean age 80.6±11.0) with a mortality rate of 19.7%. Aging, ADL dependence, pneumonia and dementia were associated with mortality and dyslipidemia and obesity with survival in univariate analysis. In multivariable analysis dyslipidemia (OR=0.35, 95%CI:0.17-0.71) was independently associated with survival. Age ≥ 86-year-old (pooled OR 2.239, 95% CI: 1.100-4.559), pneumonia (pooled OR 3.00, 95% CI: 1.362-6.606), and ADL dependence (pooled OR 6.296, 95% CI: 1.795-22.088) were significantly related to mortality (ROC AUC=82.1% (p<0.0001)).

CONCLUSION: ADL dependence, aging and pneumonia are the 3 main COVID-19 mortality predictors among an elderly population.

PMID:35734879 | DOI:10.4046/trd.2022.0006

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Can the Enhanced Transtheoretical Model Intervention (ETMI) Impact the Attitudes and Beliefs Regarding Low Back Pain of Family Medicine Residents

Isr Med Assoc J. 2022 Jun;24(6):369-374.

ABSTRACT

BACKGROUND: Low back pain has been the leading cause for disability worldwide for several decades, and clinical guidelines for its management clearly emphasize a multifactorial approach. Yet, current guidelines are still not well implemented by clinicians.

OBJECTIVES: To explore the attitudes of family medicine residents regarding low back pain and to determine whether they positively correlate with their treatment approaches. To test if these attitudes can be affected by the Enhanced Transtheoretical Model Intervention (ETMI), a guideline-based workshop.

METHODS: Participants completed an online questionnaire regarding their attitudes toward low back pain and clinical habits, after which they attended an online ETMI educational workshop. One month later all participants were asked to complete the questionnaire a second time. Statistical analysis was conducted to explore the attitudes of the residents and clinical approaches, as well as any associations between them, as well as possible differences pre- and post-intervention.

RESULTS: The participants exhibited highly psychologically oriented attitudes. Correlations between the attitudes and treatment did not show consistent coherency. Results regarding the participants clinical approaches were revealed to have two distinct and opposed inclinations: biomedically and biopsychosocially. Last, results for the re-activation subscale were significantly higher post-intervention.

CONCLUSIONS: Family medicine residents seem to be highly psychologically oriented regarding low back pain; however, they do not necessarily treat their patients accordingly. Their clinical choices seem to follow two different approaches: guideline-consistent and non-guideline-consistent. An ETMI guideline-based workshop may sway their attitudes toward re-activation of patients. Further research is needed to determine whether similar results would arise in larger physician populations.

PMID:35734835

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Comparison of incidence of medial meniscal injury in small dogs (≤15 kg) and medium-to-large dogs (>15 kg) with naturally occurring cranial cruciate ligament disease undergoing tibial plateau levelling osteotomy: 580 stifles (2015 to 2019)

J Small Anim Pract. 2022 Jun 22. doi: 10.1111/jsap.13523. Online ahead of print.

ABSTRACT

OBJECTIVES: To investigate whether a difference exists in incidence of medial meniscal tears between small (≤15 kg) and medium-to-large (>15 kg) dogs with naturally occurring cranial cruciate ligament disease.

MATERIALS AND METHODS: Records were retrospectively reviewed to identify the incidence of medial meniscal tears in dogs undergoing tibial plateau levelling osteotomy. Degree of cruciate insufficiency, method of identification (arthroscopy or arthrotomy), tibial plateau angle, weight and signalment were recorded. A two-proportion z-test with clustering adjustment was used to compare the meniscal tear rate between the two groups. Logistic regression analysis was used to investigate the effects of variables on medial meniscal tears.

RESULTS: Seventy-six stifles in 67 small dogs and 504 stifles in 384 medium-to-large dogs were included. The rate of meniscal injury at index surgery was 38.2% in small dogs and 36.7% in medium-to-large dogs. The subsequent meniscal tear rate was 1.3% in small dogs and 8% in medium-to-large dogs. The difference in meniscal tear rate was not statistically significant at either index surgery or subsequently. Degree of cruciate ligament insufficiency and use of arthroscopy were significantly associated with medial meniscal tears at index surgery. No variables were significantly associated with subsequent medial meniscal tears.

CLINICAL SIGNIFICANCE: No significant difference exists in medial meniscal tear rate between small and medium-to-large dogs either at index surgery or subsequently. The index of suspicion of concurrent medial meniscal tears should be higher in dogs with complete tear of the cranial cruciate ligament but a partial tear does not preclude meniscal pathology.

PMID:35734828 | DOI:10.1111/jsap.13523

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Machine learning-based classification of arterial spectral waveforms for the diagnosis of peripheral artery disease in the context of diabetes: A proof-of-concept study

Vasc Med. 2022 Jun 22:1358863X221105113. doi: 10.1177/1358863X221105113. Online ahead of print.

ABSTRACT

BACKGROUND: Point-of-care duplex ultrasound has emerged as a promising test for the diagnosis of peripheral artery disease (PAD). However, the interpretation of morphologically diverse Doppler arterial spectral waveforms is challenging and associated with wide inter-observer variation. The aim of this study is to evaluate the utility of machine learning techniques for the diagnosis of PAD from Doppler arterial spectral waveforms sampled at the level of the ankle in patients with diabetes.

METHODS: In two centres, 590 Doppler arterial spectral waveform images (PAD 369, no-PAD 221) from 305 patients were prospectively collected. Doppler arterial spectral waveform signals were reconstructed. Blinded full lower-limb reference duplex ultrasound results were used to label waveform according to PAD status (i.e., PAD, no-PAD). Statistical metrics and multiscale wavelet variance were extracted as discriminatory features. A long short-term memory (LSTM) network was used for the classification of raw signals, and logistic regression (LR) and support vector machines (SVM) were used for classification of extracted features. Signals and feature vectors were randomly divided into training (80%) and testing (20%) sets.

RESULTS: The highest overall accuracy was achieved using a logistic regression model with a combination of statistical and multiscale wavelet variance features, with 88% accuracy, 92% sensitivity, and 82% specificity. The area under the receiver operating characteristics curve (AUC) was 0.93.

CONCLUSION: We have constructed a machine learning algorithm with high discriminatory ability for the diagnosis of PAD using Doppler arterial spectral waveforms sampled at the ankle vessels.

PMID:35734808 | DOI:10.1177/1358863X221105113

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Relationships between androgen receptor expression and clinicopathological parameters in male breast cancer

Ann Ital Chir. 2021 Nov 23;10:S0003469X21034643. Online ahead of print.

ABSTRACT

INTRODUCTION: Most patients with male breast cancer (MBC) express the androgen receptor (AR). AR expression in these tumors may have both prognostic and predictive values because its presence indicates the potential benefits of an anti-androgen therapeutic approach. The present study aimed to investigate the relationship between AR expression and clinicopathological parameters in MBC.

MATERIAL AND METHODS: The data of 35 patients who received a histological diagnosis of MBC at the pathology department of our hospital between January 2007 and December 2017 were retrospectively reviewed. The patients’ demographic data, follow-up records and pathology reports were recorded. AR expression status and its relationship with clinicopathological parameters were evaluated. The chi-square test was used to compare independent groups. Univariate survival analyses were performed using the Kaplan-Meier survival procedure. A p value of ≤0.05 was considered statistically significant.

RESULTS: There was no significant relationship between AR expression and AJCC stage (p=0.585), pathologic stage (p=0.696), histologic grade (p=0.685), lymph-node status (p=0.685), survival rate (p=1.000), age(p=1.000), lymphovascular invasion (p=0.700), perineural invasion(p=1.000), skin invasion (p=1.000), nipple involvement(p=1.000), DCIS presence(p=1.000), ER positivity(p=1.000), PR positivity (p=0.218), Her2 expression (p=0.523), Ki67 index (p=0.685), Luminal A group (p=0.700), Luminal B group (p=0.691), triple negative group (p=1.000).

CONCLUSION: Further investigation of the relation between AR expression and clinicopathological parameters of patients with MBC might yield important information and lead to the development of additional treatment options.

KEY WORDS: Androgen receptor, AR expression, breast cancer, Male Breast cancer, Prognosis, Receptor status.

PMID:35734806

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Links between Celiac Disease and Small Intestinal Bacterial Overgrowth: A Systematic Review and Meta-Analysis

J Gastroenterol Hepatol. 2022 Jun 22. doi: 10.1111/jgh.15920. Online ahead of print.

ABSTRACT

BACKGROUND AND AIMS: Symptoms of small intestinal bacterial overgrowth (SIBO) and celiac disease (CeD) often overlap, and studies suggest a link between SIBO and CeD. We thus conducted a systematic review and meta-analysis to compare SIBO prevalence in CeD-patients and controls and assessed effects of antimicrobial therapy on gastrointestinal symptoms in SIBO positive CeD-patients.

METHODS: Electronic databases were searched until February-2022 for studies reporting SIBO prevalence in CeD. Prevalence rates, Odds Ratio (OR) and 95% confidence intervals (CI) of SIBO in CeD and controls were calculated.

RESULTS: We included 14 studies, with 742 CeD-patients and 178 controls. The pooled prevalence of SIBO in CeD was 18.3%(95%CI:11.4-28.1), with substantial heterogeneity. Including case-control studies with healthy controls, SIBO prevalence in CeD-patients was significantly increased (OR5.1, 95%CI:2.1-12.4, p=0.0001), with minimal heterogeneity. Utilizing breath tests, SIBO prevalence in CeD-patients was 20.8%(95%CI:11.9-33.7), almost two-fold higher compared to culture-based methods at 12.6%(95%CI:5.1-28.0), with substantial heterogeneity in both analyses. SIBO prevalence in CeD-patients nonresponsive to a gluten free diet (GFD) was not statistically higher as compared to those responsive to GFD (OR1.5, 95%CI:0.4-5.0, p=0.511). Antibiotic therapy of SIBO positive CeD-patients resulted in improvement in gastrointestinal symptoms in 95.6%(95%CI:78.0-99.9) and normalization of breath tests.

CONCLUSIONS: This study suggests a link between SIBO and CeD. While SIBO could explain nonresponse to a GFD in CeD, SIBO prevalence is not statistically higher in CeD-patients non-responsive to GFD. The overall quality of the evidence is low, mainly due to substantial ‘clinical heterogeneity’ and the limited sensitivity/specificity of the available diagnostic tests.

PMID:35734803 | DOI:10.1111/jgh.15920

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Attitudes, perceptions, and barriers of community pharmacists in Rwanda towards health promotion: a cross sectional study

Arch Public Health. 2022 Jun 23;80(1):157. doi: 10.1186/s13690-022-00912-4.

ABSTRACT

BACKGROUND: The practice of Pharmacists has changed worldwide over the past years. Today, health promotion is better known as an important part of modern pharmacy practice. Involving Community Pharmacists in health promotion is thus considered a valuable option in addressing public health issues. However, the literature on this practice remains unsubstantiated in African countries. In Rwanda, Community Pharmacists are believed to be solely involved in dispensing and very little has been studied about their role in health promotion. Thus, this study aimed to evaluate attitudes, perceptions, and barriers of Community Pharmacists in Rwanda towards their involvement in health promotion.

METHODS: A cross-sectional study was conducted among 236 licensed Community Pharmacists in Rwanda from 23rd January to 23rd June, 2021. A list of all respondents was obtained from Rwanda Food and Drugs Authority. All participants were randomly enrolled. Each community pharmacy was represented by one Pharmacist. We collected data from community pharmacy settings using a self-administered questionnaire made of close and open-ended questions. Statistical analyses were performed using Statistical Packages for Social Sciences (SPSS) version 25.

RESULTS: Of the 236 respondents, (n = 149, 63.1%) were male and (n = 87,37%) were female. The average age was 38.1 years (SD = 4.3). More than half confirmed that professional curriculum is adequate for offering health promotion services (n = 152, 64.4%).Majority responded that health promotion is part of their responsibility, and they are willing to provide health promotion services (n = 233,98.7%).The statement that “Pharmacists should not be involved in public health activities “was opposed by many (n=174,73.7%).The most sought-after service provided was education to drug misuse (n=211, 89.4%).Three major barriers to provision of health promotion were: lack of coordination with other healthcare professionals(n=106,69%),structure of healthcare system (n=157,67%),and lack of equipment (n=144,61%).Most Pharmacists disagreed with the statement that “patients are not interested in getting health promotion services”(n = 134,57%).

CONCLUSION: Though Community Pharmacists faced several challenges that hindered their participation in health promotion, they had positive attitudes towards promoting public health messages. There are several barriers like lack of structure to provide health promotion services that need to be addressed to boost more active participation of Pharmacists in health promotion.

PMID:35733223 | DOI:10.1186/s13690-022-00912-4

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Can systematic implementation support improve programme fidelity by improving care providers’ perceptions of implementation factors? A cluster randomized trial

BMC Health Serv Res. 2022 Jun 22;22(1):808. doi: 10.1186/s12913-022-08168-y.

ABSTRACT

BACKGROUND: Investigations of implementation factors (e.g., collegial support and sense of coherence) are recommended to better understand and address inadequate implementation outcomes. Little is known about the relationship between implementation factors and outcomes, especially in later phases of an implementation effort. The aims of this study were to assess the association between implementation success (measured by programme fidelity) and care providers’ perceptions of implementation factors during an implementation process and to investigate whether these perceptions are affected by systematic implementation support.

METHODS: Using a cluster-randomized design, mental health clinics were drawn to receive implementation support for one (intervention) and not for another (control) of four evidence-based practices. Programme fidelity and care providers’ perceptions (Implementation Process Assessment Tool questionnaire) were scored for both intervention and control groups at baseline, 6-, 12- and 18-months. Associations and group differences were tested by means of descriptive statistics (mean, standard deviation and confidence interval) and linear mixed effect analysis.

RESULTS: Including 33 mental health centres or wards, we found care providers’ perceptions of a set of implementation factors to be associated with fidelity but not at baseline. After 18 months of implementation effort, fidelity and care providers’ perceptions were strongly correlated (B (95% CI) = .7 (.2, 1.1), p = .004). Care providers perceived implementation factors more positively when implementation support was provided than when it was not (t (140) = 2.22, p = .028).

CONCLUSIONS: Implementation support can facilitate positive perceptions among care providers, which is associated with higher programme fidelity. To improve implementation success, we should pay more attention to how care providers constantly perceive implementation factors during all phases of the implementation effort. Further research is needed to investigate the validity of our findings in other settings and to improve our understanding of ongoing decision-making among care providers, i.e., the mechanisms of sustaining the high fidelity of recommended practices.

TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT03271242 (registration date: 05.09.2017).

PMID:35733211 | DOI:10.1186/s12913-022-08168-y

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Association of infant and child health characteristics with the hazard of any medical condition or disability in Australian children

Arch Public Health. 2022 Jun 23;80(1):158. doi: 10.1186/s13690-022-00913-3.

ABSTRACT

BACKGROUND: The incidence of any medical condition (e.g., sight, hearing, and speech problems, blackouts, chronic pain etc.) or disability (e.g., limited use of arms or fingers, legs, and feet, or other physical long-term health condition limiting everyday activities etc.) have been increasing among Australian children in recent decades.

OBJECTIVES: This study assessed whether infant or child health characteristics might be predictors of subsequent medical conditions or disabilities in children in the first 15 years of life.

METHODS: Using time to event data of 5107 children, obtained from the Birth cohort of the Longitudinal Study of Australian Children, the study estimated the incidence of any medical condition or disability using the survival analysis technique. This study followed up the children from birth to 14 or 15 years of age (2004-2018) and assessed the association of infant and child health characteristics (birthweight, gestational age, use of intensive care unit or ventilator during their neonatal age and obesity) with hazard of any medical condition or disability using the random effect parametric survival regression model. The infant characteristics were measured in the Wave 1 while the children were aged 0/1 year and obesity characteristics were measured longitudinally over all the waves up to 14/15 years of age.

RESULTS: The hazard rate of any medical condition or disability for all participants was 26.13 per 1000 person-years among children in Australia. This hazard incidence rate was higher among low birthweight (39.07) children compared to the children of normal birthweight (24.89) children. The hazard rate also higher among obese (34.37) children compared to the normal weight children (24.82) and among those who had received after-birth ventilation or intensive care unit emergency services (36.87) compared to those who have not received these services (24.20). The parametric panel regression model also suggests that children with low birthweight were 1.43 times (Hazard Ratio: 1.43, 95% Confidence Interval: 1.05-1.94) more likely to have any medical condition or disability than children with normal birthweight. The time to event analyses also revealed that being recipient of after-birth emergencies (HR: 1.47, 95% CI: 1.23-1.75), being male children (HR: 1.30, 95% CI: 1.14-1.48) or being obese (HR: 1.38, 95% CI: 1.07-1.79) significantly increased the likelihood of the incidence of a medical condition or disability among children. The regression model was adjusted for socio-demographic characteristics of children and mothers..

CONCLUSIONS: The study findings suggest that infants with low birth weight, hospital emergency service use and children with obesity would benefit from additional health care monitoring to minimize the risk of any medical condition or disability.

PMID:35733191 | DOI:10.1186/s13690-022-00913-3

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Maternal epigenetic clocks measured during pregnancy do not predict gestational age at delivery or offspring birth outcomes: a replication study in metropolitan Cebu, Philippines

Clin Epigenetics. 2022 Jun 22;14(1):78. doi: 10.1186/s13148-022-01296-6.

ABSTRACT

Adverse birth outcomes, such as early gestational age and low birth weight, can have lasting effects on morbidity and mortality, with impacts that persist into adulthood. Identifying the maternal factors that contribute to adverse birth outcomes in the next generation is thus a priority. Epigenetic clocks, which have emerged as powerful tools for quantifying biological aging and various dimensions of physiological dysregulation, hold promise for clarifying relationships between maternal biology and infant health, including the maternal factors or states that predict birth outcomes. Nevertheless, studies exploring the relationship between maternal epigenetic age and birth outcomes remain few. Here, we attempt to replicate a series of analyses previously reported in a US-based sample, using a larger similarly aged sample (n = 296) of participants of a long-running study in the Philippines. New pregnancies were identified prospectively, dried blood spot samples were collected during the third trimester, and information was obtained on gestational age at delivery and offspring weight after birth. Genome-wide DNA methylation was assessed with the Infinium EPIC array. Using a suite of 15 epigenetic clocks, we only found one significant relationship: advanced age on the epigenetic clock trained on leptin predicted a significantly earlier gestational age at delivery (β = – 0.15, p = 0.009). Of the other 29 relationships tested predicting gestational age and offspring birth weight, none were statistically significant. In this sample of Filipino women, epigenetic clocks capturing multiple dimensions of biology and health do not predict birth outcomes in offspring.

PMID:35733189 | DOI:10.1186/s13148-022-01296-6