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Nevin Manimala Statistics

Ambient climatic factors and term birthweight: A study of critical windows of exposure in the Republic of Cyprus

Environ Res. 2023 Aug 20:116885. doi: 10.1016/j.envres.2023.116885. Online ahead of print.

ABSTRACT

BACKGROUND: Reduced birthweight is associated with adverse perinatal and long-term outcomes. A few studies examined the association between climatic factors and birthweight with inconsistent results probably due to differences in exposure assessment, statistical models, climatic parameters, and study populations.

METHODS: We obtained data from the Republic of Cyprus birth registry from 2007 to 2020, and matched climatic exposures (i.e., temperature, relative humidity, temperature variability, humidity variability) by the hospital district at birth. We used distributed lag models to examine the association between term birthweight, temperature, humidity, and their variability to identify critical windows. Our models were adjusted for coarse particulate matter level (≤10 μm [PM10), and individual-level covariates. Subgroup analysis was conducted to examine effect modification by maternal age and education.

RESULTS: We identified two critical windows of exposure to ambient temperature at early and late pregnancy. The cumulative change of birthweight per 5 °C increases in mean weekly temperature was -57.27 (2%) (95% Confidence Interval [CI]: 99.62 (3.1%), -14.92 (0.5%)) and -79.2 (2.5%) (95%CI: 117.03 (3.5%), -41.52 (1.3%)) grams during weeks 1-8 and weeks 28-37, respectively. There was no significant effect of humidity, temperature variability, or humidity variability on birthweight. Based on subgroup analysis, mothers with post-secondary education were more sensitive to temperature, but the marginal significance of differences in effect estimates may be linked with differences in sample size.

CONCLUSION: Our study suggests that higher ambient temperature exposure during early and late pregnancy is associated with lower birthweight in main and subgroup analysis. The findings demonstrate in a country highly impacted by climate change like Cyprus that rising temperatures may be associated with perinatal outcomes in susceptible populations during sensitive windows of exposure.

PMID:37607623 | DOI:10.1016/j.envres.2023.116885

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Nevin Manimala Statistics

Multi-part strategy for testing differential taxa abundance in sequencing data: A simulation study with an application to a microbiome study

J Microbiol Methods. 2023 Aug 20:106810. doi: 10.1016/j.mimet.2023.106810. Online ahead of print.

ABSTRACT

Comparing the microbiome across study arms is a recurrent goal in many studies. Standard statistical methods are often used for this purpose, however, they do not always represent the best choice in this context given the characteristics of microbiota sequencing data, e.g., non-negative, highly skewed counts with a large number of zeros. A multi-part strategy, that combines a two-part test (as described by Wagner et al., 2011), a Wilcoxon sum-rank test, a Chi-square and a Barnard’s test was explored to compare the taxa abundance between study arms. The choice of the test is based on the data structure. The type I error of the multi-part strategy was evaluated by using a simulation study and the method was applied to real data. The script to perform the analysis with the multi-part approach is provided in the statistical software SAS. Several scenarios were simulated and in all of them the type I error was not inflated. Based on the statistical differences resulting from the two-part test (as described by Wagner et al., 2011) and the multi-part strategy (as proposed in this article), different biological implications can be extracted from the same comparison in the same data set. In the comparison of taxa abundance between study arms, we showed that careful attention needs to be paid on the data structure, in order to be able to choose an appropriate analysis method. Our approach selects the most suitable test according to the type of data observed, maintains a good type I error and is easily applicable by using the SAS macro provided.

PMID:37607610 | DOI:10.1016/j.mimet.2023.106810

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Nevin Manimala Statistics

Decreasing Antibiotic Use in a Community NICU, a Quality Improvement Initiative

Am J Perinatol. 2023 Aug 22. doi: 10.1055/a-2158-8422. Online ahead of print.

ABSTRACT

OBJECTIVE: In view of the excessive use of antibiotics in our Neonatal Intensive Care Unit(NICU), we launched a 5 year multidisciplinary quality improvement (QI)initiative in our NICU in 2018. We had set our AIM of decreasing the Antibiotic Use Rate (AUR) from 22% down to 17%.

STUDY DESIGN: The QI initiative was conducted in our 53-bed level 3B NICU. We used the core elements of antibiotic stewardship and focused on improving gaps in knowledge by using updated standards of care and a multidisciplinary approach. Outcome measures included overall antibiotic use rate in NICU. Statistical control chart (P chart) was used to plot the AUR data quarterly.

RESULTS: The AUR demonstrated a decline at the onset , and at the end of the initiative the AUR demonstrated a sustained decline to 13.18 % , a 40% decrease from the baseline AUR of 22%. The changes that were implemented included development of evidence-based guidelines for babies less than and greater than 35 weeks, daily Antibiotic Stewardship Rounds, sepsis risk calculator, antibiotic stop orders (48 hour stop, 36 hour soft stop and 36 hour hard stop) and periodic reviews.

CONCLUSIONS: Our multidisciplinary approach using all the core elements of an Antibiotic Stewardship Program (ASP) significantly decreased AUR in our NICU.

PMID:37607590 | DOI:10.1055/a-2158-8422

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Nevin Manimala Statistics

Gastrointestinal Dysfunction in Neurological and Neurodegenerative Disorders

Semin Neurol. 2023 Aug 22. doi: 10.1055/s-0043-1771459. Online ahead of print.

ABSTRACT

Increasing research links the gut microbiome to neurodegenerative disorders. The gut microbiome communicates with the central nervous system via the gut-brain axis and affects behavioral and cognitive phenotypes. Dysbiosis (a dysfunctional microbiome) drives increased intestinal permeability and inflammation that can negatively affect the brain via the gut-brain axis. Healthier metabolic and lipid profiles and cognitive phenotypes are observed in individuals with more distinct microbiomes. In this review, we discuss the role of the gut microbiome and gut-brain axis in neurodegenerative diseases such as Parkinson’s disease and Alzheimer’s disease and related animal models, in cancer and cancer treatments, and in metabolic syndrome. We also discuss strategies to improve the gut microbiome and ultimately brain function. Because healthier cognitive phenotypes are observed in individuals with more distinct microbiomes, increased efforts are warranted to develop therapeutic strategies for those at increased risk of developing neurological disorders and patients diagnosed with those disorders.

PMID:37607587 | DOI:10.1055/s-0043-1771459

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Nevin Manimala Statistics

Decreased Cognitive Function in Danish Children with Epilepsy

Neuropediatrics. 2023 Aug 22. doi: 10.1055/s-0043-1772191. Online ahead of print.

ABSTRACT

OBJECTIVE: Children with epilepsy have a significantly increased risk of cognitive impairment. EpiTrack Junior is a screening tool developed for fast assessment of cognitive function in children with epilepsy. The tool is validated for German children. This cohort study aims to investigate the differences in cognitive function between healthy Danish children and Danish children diagnosed with epilepsy METHODS: The cognitive function of 204 healthy controls and 90 children and adolescents diagnosed with epilepsy was examined using EpiTrack Junior. The participants of the control group were aged 6 to 16 years. The patients were aged 6 to 20 years. Statistical analyses were performed with the use of SPSS Statistics.

RESULTS: The control group showed significantly higher scores than the patient group in three of six subtests and total test scores (p-values ranging from 0.033 to <0.001). When grouped according to the EpiTrack Junior guidelines, more patients showed scores “below average” or “poor” compared to the control group. The age-corrected total score was not associated with antiepileptic drug treatment (p-value of 0.732) nor with a history of focal seizures (p-value of 0.215). A history of generalized tonic-clonic seizures (GTCS) was associated with a higher EpiTrack Junior score (p-value of 0.035).

CONCLUSION: The patient group showed statistically significant lower test scores compared to the control group confirming the relationship between impaired cognitive function and childhood epilepsy. Furthermore, a correlation between a higher EpiTrack Junior score and the presence of GTCS was found. Focal seizures and antiepileptic drug treatment were not associated with the EpiTrack Junior score.

PMID:37607574 | DOI:10.1055/s-0043-1772191

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Nevin Manimala Statistics

Oxidative stress markers cannot be used as endometriosis biomarkers in infertile patients

Gynecol Endocrinol. 2023 Aug 18;39(1):2242956. doi: 10.1080/09513590.2023.2242956.

ABSTRACT

OBJECTIVES: Endometriosis is a common benign gynaecological disease that significantly compromises the quality of life of patients. To date, invasive surgery is the method of choice to visually and histologically confirm endometriosis. Thus, there is a major interest to develop noninvasive diagnostic tools. Oxidative stress is one of the proposed mechanisms of pathogenesis and may be involved in pelvic pain, dysmenorrhea, dyspareunia, and infertility in endometriosis patients. Thus, markers of oxidative stress may serve as diagnostic biomarkers for endometriosis.

DESIGN: This prospective case-control study assessed erythrocyte superoxide dismutase (SOD), erythrocyte glutathione peroxidase (GPX), serum hexanoyl lysine (HEL) and peritoneal fluid HEL.

PARTICIPANTS/MATERIALS, SETTING, AND METHODS: We enrolled 86 women with primary infertility; the case group included 57 women with endometriosis, and the control group included 29 women with unexplained primary infertility. All the patients underwent laparoscopy, and the diagnosis was confirmed histologically. RANDOX and RANSEL reagents were used to determine the levels of SOD and GPX, respectively, and ELISA was used to determine the levels of HEL.

RESULTS: We found no statistically significant differences in the erythrocyte levels of GPX (p value 0.623) or SOD (p value 0.122) or the serum or peritoneal fluid levels of HEL (p value 0.562 and 0.329 accordingly).

CONCLUSIONS: SOD, GPX, and HEL levels most likely do not differ between patients with unexplained infertility and patients with endometriosis.

PMID:37607570 | DOI:10.1080/09513590.2023.2242956

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Nevin Manimala Statistics

High-flow nasal cannula therapy in patients with COVID-19 in intensive care units in a country with limited resources: a single-center experience

J Int Med Res. 2023 Aug;51(8):3000605231193580. doi: 10.1177/03000605231193580.

ABSTRACT

OBJECTIVE: This study was performed to determine the outcomes of patients with coronavirus disease 2019 (COVID-19) who developed hypoxemic respiratory failure necessitating high-flow nasal cannula (HFNC) therapy and to identify the predictors of HFNC therapy success.

METHODS: This retrospective observational study involved all patients treated with HFNC therapy at a center for COVID-19 in Viet Nam from August to October 2021.

RESULTS: The study recruited 302 patients. Of these 302 patients, 171 (56.6%) underwent successful HFNC therapy, and the all-cause mortality rate was 33.44%. Non-critical COVID-19 and a higher respiratory rate-oxygenation (ROX) index at 48 hours after initiating HFNC therapy were independently correlated with HFNC therapy success. The statistically significant predictors of HFNC therapy success were younger age, non-critical COVID-19, a higher platelet count when starting HFNC therapy, and a higher ROX index at 24, 36, and 48 hours after HFNC therapy initiation.

CONCLUSIONS: HFNC therapy appears to be effective in patients with COVID-19 who develop respiratory failure requiring respiratory support. Non-critical COVID-19 and a higher ROX index measured 48 hours after HFNC therapy initiation might serve as predictive factors for the success of HFNC therapy.

PMID:37607569 | DOI:10.1177/03000605231193580

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Nevin Manimala Statistics

Non-Pharmacological Management of Neuropathic Pain in Older Adults: A Systematic Review

Pain Med. 2023 Aug 22:pnad112. doi: 10.1093/pm/pnad112. Online ahead of print.

ABSTRACT

INTRODUCTION: Neuropathic pain encompasses multiple diagnoses with detrimental impacts on quality of life and overall health. In older adults, pharmacological management is limited by adverse effects and drug interactions, while surgical management involves perioperative risk. Prior reviews addressing non-pharmacological interventions for neuropathic pain have not focused on this demographic. Therefore, this systematic review synthesizes the evidence regarding the effectiveness of non-pharmacological interventions in reducing neuropathic pain severity in older adults.

METHODS: PubMed, CINAHL, Web of Science, and PsycInfo were searched using key terms, with inclusion criteria of age ≥ 65, neuropathic pain, non-pharmacological intervention, pain severity measurement, English language, peer-reviewed, and either RCT or quasi-experimental design. 2759 records were identified, with an additional 28 records identified by review of reference lists. After removal of duplicates, 2288 records were screened by title and abstract, 404 full-text articles were assessed, and 19 articles were critically reviewed and synthesized.

RESULTS: Of the 14 RCTs and five quasi-experimental studies included in the review, the most common intervention was electric and/or magnetic therapy, followed by acupuncture, mindfulness meditation, exercise, and light therapy. Several studies revealed both statistical and clinical significance, but conclusions were limited by small sample sizes and methodological shortcomings. The interventions were generally safe and acceptable.

CONCLUSIONS: Results should be interpreted with consideration of clinical versus statistical significance, mediators of pain severity, and individual variations in effectiveness. Further research should address multimodal and novel interventions, newer models of care, and technology-based interventions.

PMID:37607003 | DOI:10.1093/pm/pnad112

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Nevin Manimala Statistics

Long-Term Efficacy of Internet-Based Cognitive Behavioral Therapy Self-Help Programs for Adults With Depression: Systematic Review and Meta-Analysis of Randomized Controlled Trials

JMIR Ment Health. 2023 Aug 22;10:e46925. doi: 10.2196/46925.

ABSTRACT

BACKGROUND: Depression is a worldwide mental disorder and a leading cause of disability. Many people with depression do not want to take medication or have the motivation to seek psychotherapy treatment for many reasons. Guided internet-based self-help programs may be a promising solution for addressing these issues. This kind of intervention has proven to be effective in reducing depression symptoms on a short-term scale. However, as treatment often is a long-term rehabilitation process, it is important to examine not only the short-term effects of internet-based cognitive behavioral therapy (iCBT) self-help treatment but also the follow-up or long-term efficacy of this kind of intervention.

OBJECTIVE: This systematic review and meta-analysis aimed to identify studies that examined follow-up data ≥8 weeks after posttreatment measurements and thereby examined the long-term efficacy of iCBT self-help programs with minimal weekly guidance for people with depression. It aimed to analyze the long-term efficacy of iCBT treatments compared to control conditions as well as long-term efficacy within the iCBT treatment conditions. Additionally, it aimed to conduct subgroup analyses according to the follow-up time points for each outcome. Finally, it examined long-term improvements in quality of life.

METHODS: The Cochrane Collaboration Depression, Anxiety, and Neurosis Controlled Trials Register (CCDANCTR), grey literature, reference lists, and correspondence were used to search for published and unpublished randomized controlled trials (RCTs) that reported the long-term or follow-up efficacy of computer-based or iCBT self-help treatments for depression with minimal guidance of up to 10 min/wk. The search took place between 2015 and 2022 (October).

RESULTS: The search resulted in a total of 2809 study abstracts, of which 15 studies (with 17 samples) met all inclusion criteria and were included in the long-term analysis. The results showed that the depression outcomes of all follow-up time points together in the treatment conditions were favored over the control conditions with a medium effect size of 0.43 (n=1689 participants; 9 RCTs; standardized mean difference [SMD] -0.43, 95% CI -0.67 to -0.20; P<.001). The analysis of long-term efficacy within the iCBT treatment conditions showed that the follow-up outcomes of the treatment groups were favored over the posttreatment outcomes with a small effect size of 0.20 (n=2196 participants; 17 RCTs; SMD 0.20, 95% CI 0.07-0.49; P=.003). Findings for improving quality of life also showed that the iCBT conditions were favored over the control conditions with a small effect size of 0.19 (n=1345 participants; 3 RCTs; SMD 0.19, 95% CI 0.08-0.30; P<.001).

CONCLUSIONS: This systematic review and meta-analysis found that iCBT self-help interventions had a superior long-term efficacy for individuals with depressive symptoms compared to control groups. The within-group analysis of iCBT treatment conditions also showed statistically significant improvements in reducing depressive symptoms at follow-up compared to posttreatment measurements.

PMID:37606990 | DOI:10.2196/46925

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Nevin Manimala Statistics

Effect of an Internet-Delivered Cognitive Behavioral Therapy-Based Sleep Improvement App for Shift Workers at High Risk of Sleep Disorder: Single-Arm, Nonrandomized Trial

J Med Internet Res. 2023 Aug 22;25:e45834. doi: 10.2196/45834.

ABSTRACT

BACKGROUND: Shift workers are at high risk of developing sleep disorders such as shift worker sleep disorder or chronic insomnia. Cognitive behavioral therapy (CBT) is the first-line treatment for insomnia, and emerging evidence shows that internet-based CBT is highly effective with additional features such as continuous tracking and personalization. However, there are limited studies on internet-based CBT for shift workers with sleep disorders.

OBJECTIVE: This study aimed to evaluate the impact of a 4-week, physician-assisted, internet-delivered CBT program incorporating machine learning-based well-being prediction on the sleep duration of shift workers at high risk of sleep disorders. We evaluated these outcomes using an internet-delivered CBT app and fitness trackers in the intensive care unit.

METHODS: A convenience sample of 61 shift workers (mean age 32.9, SD 8.3 years) from the intensive care unit or emergency department participated in the study. Eligible participants were on a 3-shift schedule and had a Pittsburgh Sleep Quality Index score ≥5. The study comprised a 1-week baseline period, followed by a 4-week intervention period. Before the study, the participants completed questionnaires regarding the subjective evaluation of sleep, burnout syndrome, and mental health. Participants were asked to wear a commercial fitness tracker to track their daily activities, heart rate, and sleep for 5 weeks. The internet-delivered CBT program included well-being prediction, activity and sleep chart, and sleep advice. A job-based multitask and multilabel convolutional neural network-based model was used for well-being prediction. Participant-specific sleep advice was provided by sleep physicians based on daily surveys and fitness tracker data. The primary end point of this study was sleep duration. For continuous measurements (sleep duration, steps, etc), the mean baseline and week-4 intervention data were compared. The 2-tailed paired t test or Wilcoxon signed rank test was performed depending on the distribution of the data.

RESULTS: In the fourth week of intervention, the mean daily sleep duration for 7 days (6.06, SD 1.30 hours) showed a statistically significant increase compared with the baseline (5.54, SD 1.36 hours; P=.02). Subjective sleep quality, as measured by the Pittsburgh Sleep Quality Index, also showed statistically significant improvement from baseline (9.10) to after the intervention (7.84; P=.001). However, no significant improvement was found in the subjective well-being scores (all P>.05). Feature importance analysis for all 45 variables in the prediction model showed that sleep duration had the highest importance.

CONCLUSIONS: The physician-assisted internet-delivered CBT program targeting shift workers with a high risk of sleep disorders showed a statistically significant increase in sleep duration as measured by wearable sensors along with subjective sleep quality. This study shows that sleep improvement programs using an app and wearable sensors are feasible and may play an important role in preventing shift work-related sleep disorders.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.2196/24799.

PMID:37606971 | DOI:10.2196/45834