Nevin Manimala

J Refract Surg. 2024 Apr;40(4):e199-e207. doi: 10.3928/1081597X-20240214-01. Epub 2024 Apr 1.

ABSTRACT

PURPOSE: To investigate the efficacy of incorporating Generative Adversarial Network (GAN) and synthetic images in enhancing the performance of a convolutional neural network (CNN) for automated estimation of Implantable Collamer Lens (ICL) vault using anterior segment optical coherence tomography (AS-OCT).

METHODS: This study was a retrospective evaluation using synthetic data and real patient images in a deep learning framework. Synthetic ICL AS-OCT scans were generated using GANs and a secondary image editing algorithm, creating approximately 100,000 synthetic images. These were used alongside real patient scans to train a CNN for estimating ICL vault distance. The model’s performance was evaluated using statistical metrics such as mean absolute percentage error (MAPE), mean absolute error (MAE), root mean squared error (RMSE), and coefficient of determination (R²) for the estimation of ICL vault distance.

RESULTS: The study analyzed 4,557 AS-OCT B-scans from 138 eyes of 103 patients for training. An independent, retrospectively collected dataset of 2,454 AS-OCT images from 88 eyes of 56 patients, used prospectively for evaluation, served as the test set. When trained solely on real images, the CNN achieved a MAPE of 15.31%, MAE of 44.68 µm, and RMSE of 63.3 µm. However, with the inclusion of GAN-generated and algorithmically edited synthetic images, the performance significantly improved, achieving a MAPE of 8.09%, MAE of 24.83 µm, and RMSE of 32.26 µm. The R² value was +0.98, indicating a strong positive correlation between actual and predicted ICL vault distances (P < .01). No statistically significant difference was observed between measured and predicted vault values (P = .58).

CONCLUSIONS: The integration of GAN-generated and edited synthetic images substantially enhanced ICL vault estimation, demonstrating the efficacy of GANs and synthetic data in enhancing OCT image analysis accuracy. This model not only shows potential for assisting postoperative ICL evaluations, but also for improving OCT automation when data paucity is an issue. [J Refract Surg. 2024;40(4):e199-e207.].

PMID:38593258 | DOI:10.3928/1081597X-20240214-01

J Refract Surg. 2024 Apr;40(4):e218-e228. doi: 10.3928/1081597X-20240311-02. Epub 2024 Apr 1.

ABSTRACT

PURPOSE: To assess agreement between a new aberrometer (Osiris-T; CSO) employing pyramid wavefront sensor technique and Scheiner-Smirnov aberrometer (OPD-Scan III; Nidek) on measuring ocular, corneal, and internal aberrations in healthy participants.

METHODS: The measurements were conducted three times consecutively by an experienced examiner. The total root mean square (RMS) aberrations, higher order aberration RMS, coma Z₃^±1, trefoil Z₃^±3, spherical aberration Z₄⁰_, and astigmatism II Z₄^±2 up to 7th order were exported in both 4-and 6-mm pupil zones. The parameters between the two devices were statistically compared using the paired t-test, and the differences assessed with Bland-Altman plots and 95% limits of agreement.

RESULTS: This prospective study included 70 right eyes of 70 healthy participants with an average age of 25.94 ± 6.59 years (range: 18 to 47 years). The mean difference in the two devices ranged from 0.01 µm for astigmatism II Z₄^±2 to 0.63 µm for total RMS in 4 mm and from 0.01 to 1.41 µm in 6-mm pupil size. The Bland-Altman analysis of ocular, corneal, and internal aberrations indicated high agreement between the two devices and the maximum absolute values for 95% limits of agreement ranged from 0.03 to 1.06 µm for 4-mm pupil diameters and 0.12 to 1.13 µm for 6-mm pupil diameters.

CONCLUSIONS: The newly developed pyramid wavefront sensor technique aberrometer demonstrated a high agreement with a Scheiner-Smirnov aberrometer when measuring ocular, corneal, and internal aberrations in healthy participants. Thus, the two aberrometers may be considered interchangeable for clinical applications. [J Refract Surg. 2024;40(4):e218-e228.].

PMID:38593257 | DOI:10.3928/1081597X-20240311-02

Cancer Discov. 2024 Apr 9. doi: 10.1158/2159-8290.CD-23-1441. Online ahead of print.

ABSTRACT

Childhood cancer survivorship studies generate comprehensive datasets comprising demographic, diagnosis, treatment, outcome, and genomic data from survivors. To broadly share this data, we created the St. Jude Survivorship Portal (https://survivorship.stjude.cloud), the first data portal for sharing, analyzing, and visualizing pediatric cancer survivorship data. Over 1,600 phenotypic variables and 400 million genetic variants from over 7,700 childhood cancer survivors can be explored on this free, open-access portal. Summary statistics of variables are computed on-the-fly and visualized through interactive and customizable charts. Survivor cohorts can be customized and/or divided into groups for comparative analysis. Users can also seamlessly perform cumulative incidence and regression analyses on the stored survivorship data. Using the portal, we explored the ototoxic effects of platinum-based chemotherapy, uncovered a novel association between mental health, age, and limb amputation, and discovered a novel haplotype in MAGI3 strongly associated with cardiomyopathy specifically in survivors of African ancestry.

PMID:38593228 | DOI:10.1158/2159-8290.CD-23-1441

Blood Adv. 2024 Apr 9:bloodadvances.2023011388. doi: 10.1182/bloodadvances.2023011388. Online ahead of print.

ABSTRACT

Inhibitor development is the most severe complication of hemophilia A care, and is associated with increased morbidity and mortality. The aim of this study was to use a novel IgG epitope mapping method to explore the factor VIII (FVIII)-specific epitope profile in the SIPPET cohort population and to develop an epitope-mapping based inhibitor prediction model. The population consisted of 122 previously untreated patients with severe hemophilia A that were followed-up for 50 days of exposure to FVIII or 3 years, whichever occurred first. Sampling was performed before FVIII treatment and at the end of the follow-up. The outcome was inhibitor development. The FVIII epitope repertoire was assessed by means of a novel random peptide phage-display assay. A LASSO regression model and a random forest model were fitted on post-treatment sample data and validated in pre-treatment sample data. The predictive performance of these models was assessed by the C-statistic and a calibration plot. We identified 27,775 peptides putatively directed against FVIII, which were used as input for the statistical models. The C-statistic of the LASSO and random forest models were good at 0.78 (95%CI: 0.69-0.86) and 0.80 (95%CI: 0.72-0.89). Model calibration of both models was moderately good. Two statistical models, developed on data from a novel random peptide phage display assay, were used to predict inhibitor development before exposure to exogenous FVIII. These models can be used to set up diagnostic tests that predict the risk of inhibitor development before starting treatment with FVIII.

PMID:38593222 | DOI:10.1182/bloodadvances.2023011388

Clin Infect Dis. 2024 Apr 9:ciae195. doi: 10.1093/cid/ciae195. Online ahead of print.

ABSTRACT

BACKGROUND: Peripheral intravenous catheters (PIVCs) contribute substantially to the global burden of infections. This systematic review assessed 24 infection prevention and control (IPC) interventions to prevent PIVC-associated infections and other complications.

METHODS: We searched Ovid MEDLINE, Embase, Cochrane Library, WHO Global Index Medicus, CINAHL and reference lists for controlled studies, from January 1, 1980-March 16, 2023. We dually selected studies, assessed risk of bias, extracted data, and rated the certainty of evidence (COE). For outcomes with three or more trials, we conducted Bayesian random-effects meta-analyses.

RESULTS: 105 studies met our prespecified eligibility criteria, addressing 16 of the 24 research questions; no studies were identified for eight research questions.Based on findings of low to high COE, wearing gloves reduced the risk for overall adverse events related to insertion compared to no gloves (one non-randomised controlled trial [RCT]; adjusted risk ratio [RR]: 0.52, 95% confidence interval 0.33-0.85), and catheter removal based on defined schedules potentially resulted in a lower phlebitis/thrombophlebitis incidence (10 RCTs; RR: 0.74, 95% credible interval 0.49-1.01) compared to clinically indicated removal in adults. In neonates, chlorhexidine reduced the phlebitis score compared to non-chlorhexidine-containing disinfection (one RCT; 0.14 versus 0.68, p = 0.003). No statistically significant differences were found for other measures.

CONCLUSIONS: Despite their frequent use and concern about PIVC-associated complications, this review underscores the urgent need for more high-quality studies on effective IPC methods regarding safe PIVC management. In the absence of valid evidence, adherence to standard precaution measures and documentation remain the most important principles to curb PIVC complications.

PMID:38593192 | DOI:10.1093/cid/ciae195

PLoS One. 2024 Apr 9;19(4):e0299825. doi: 10.1371/journal.pone.0299825. eCollection 2024.

ABSTRACT

Chilling sensitivity is one of the greatest challenges affecting the marketability and profitability of sweet basil (Ocimum basilicum L.) in the US and worldwide. Currently, there are no sweet basils commercially available with significant chilling tolerance and traditional aroma profiles. This study was conducted to identify quantitative trait loci (QTLs) responsible for chilling tolerance and aroma compounds in a biparental mapping population, including the Rutgers advanced breeding line that served as a chilling tolerant parent, ‘CB15’, the chilling sensitive parent, ‘Rutgers Obsession DMR’ and 200 F2 individuals. Chilling tolerance was assessed by percent necrosis using machine learning and aroma profiling was evaluated using gas chromatography (GC) mass spectrometry (MS). Single nucleotide polymorphism (SNP) markers were generated from genomic sequences derived from double digestion restriction-site associated DNA sequencing (ddRADseq) and converted to genotype data using a reference genome alignment. A genetic linkage map was constructed and five statistically significant QTLs were identified in response to chilling temperatures with possible interactions between QTLs. The QTL on LG24 (qCH24) demonstrated the largest effect for chilling response and was significant in all three replicates. No QTLs were identified for linalool, as the population did not segregate sufficiently to detect this trait. Two significant QTLs were identified for estragole (also known as methyl chavicol) with only qEST1 on LG1 being significant in the multiple-QTL model (MQM). QEUC26 was identified as a significant QTL for eucalyptol (also known as 1,8-cineole) on LG26. These QTLs may represent key mechanisms for chilling tolerance and aroma in basil, providing critical knowledge for future investigation of these phenotypic traits and molecular breeding.

PMID:38593174 | DOI:10.1371/journal.pone.0299825

PLoS One. 2024 Apr 9;19(4):e0301843. doi: 10.1371/journal.pone.0301843. eCollection 2024.

ABSTRACT

Leisure plays a key role in the happiness of youth. Studies have shown that various factors of leisure, such as the type, the time, the cost, and the space, have an influence on the adolescents’ happiness. However, little is known about which of these factors is a major factor in youth’s happiness. The purpose of this study is to explore the leisure factors that determine happiness in adolescents by examining the relationship between happiness and various leisure factors. The study used the method of machine learning to analyze national statistical data, National Leisure Activity Survey. The data used in this study were from the National Leisure Activity Survey 2019, which is a national statistic produced by the Ministry of Culture, Sports and Tourism in the Republic of Korea. The analysis found that leisure perceptions, academic and leisure balance, and public leisure space have a very important impact on the adolescents’ well-being. The findings of this research may contribute to a better understanding of leisure and happiness in adolescents, and will also help adolescents make better use of their leisure time, leading to better leisure lives, and ultimately contribute to raising their level of happiness.

PMID:38593163 | DOI:10.1371/journal.pone.0301843

PLoS One. 2024 Apr 9;19(4):e0301410. doi: 10.1371/journal.pone.0301410. eCollection 2024.

ABSTRACT

BACKGROUND: Suicide is a prominent source of harm and death globally, and it is the leading cause of premature death among prisoners. Therefore, the main aim of this study was to determine the prevalence and factors associated with suicidal ideation and attempt among prisoners in Northwest Ethiopia.

METHODS: An institution-based cross-sectional study design was performed from May 23 to June 22, 2022. After proportional allocation to the three correctional institutions, a total of 788 study participants were randomly recruited. The World Health Organization Composite International Diagnostic Interview (CIDI) was used to evaluate suicide ideation and attempt. To determine factors associated with suicidal ideation and attempt, multivariate logistic regression analyses were conducted. At a 95% confidence interval (CI) of P-value <0.05, statistical significance was declared.

RESULTS: The prevalence of suicidal ideation and attempt among prisoners was 23.6% and 10.7%, with 95% CI (20.76, 26.70) and (8.68, 13.02), respectively. Female sex (AOR = 2.38, 95% CI: 1.12, 5.05), family history of mental illness (AOR = 3.09, 95% CI: 1.93, 4.88), depression (AOR = 2.04, 95% CI: 1.43, 2.98), poor social support (AOR = 2.76, 95% CI: 1.56, 4.85) and previous incarceration (AOR = 1.84, 95% CI: 1.18, 2.86) were significantly associated with suicidal ideation. However, being single (AOR = 2.58, 95% CI: 1.47, 4.54), family history of suicide (AOR = 2.43, 95% CI: 1.18, 5.01), depression (AOR = 2.62, 95% CI: 1.59, 4.31) and previous imprisonments (AOR = 2.11, 95% CI: 1.20, 3.69) were associated with suicidal attempt.

CONCLUSIONS: The prevalence of suicidal ideation and attempt among prisoners were found to be high. Therefore, the findings of this study recommend that early detection and design of prison mental health services should be delivered to develop mental health care, prevention, and intervention programs for incarcerated people to improve suicidal behavior in prison.

PMID:38593147 | DOI:10.1371/journal.pone.0301410

PLoS One. 2024 Apr 9;19(4):e0299771. doi: 10.1371/journal.pone.0299771. eCollection 2024.

ABSTRACT

Niger is highly vulnerable to rainfall variability, often with adverse socioeconomic consequences. This study examined observed subseasonal rainfall variability during Niger’s monsoon season (May to September). Using k-means clustering of dekadal (ten-day) rainfall, a typology was developed for the annual evolution of the monsoon season. Year-to-year rainfall variability for each of the first few dekads of the season is modest, but the middle, or peak of the rainy season demonstrates large interannual variability. Clustering analysis of annual timeseries for each dekad of the season revealed two types of monsoon progression. The distinction between the two types is strongly dependent on differences during the latter half of the season. For the first and third ten-day periods in August, and the first ten days in September, the two groups of years are more distinct. These results imply that while reliable prediction of the timing of anomalous onsets will be challenging, due to the relatively narrow range of uncertainty historically, there are opportunities for further exploration of dynamic and or statistical predictors or precursors using this typology that could potentially provide better information for decision-makers, especially with respect to agriculture.

PMID:38593139 | DOI:10.1371/journal.pone.0299771

PLoS One. 2024 Apr 9;19(4):e0297430. doi: 10.1371/journal.pone.0297430. eCollection 2024.

ABSTRACT

BACKGROUND: Basic Life Support (BLS) is a sequence of care provided to patients who are experiencing respiratory arrest, cardiac arrest, or airway obstruction. Its main purpose is to maintain the airway, breathing, and circulation through CPR. This review aimed to estimate the pooled prevalence of Health Professionals’ knowledge and practice on basic life support in Ethiopia.

METHOD: Eligible primary studies were accessed from international database (PubMed, Google Scholar, Hinari databases) and grey literatures found in online repositories. The required data were extracted from those studies and exported to Stata 17 for analysis. A weighted inverse-variance random-effects model and Der Simonian-Laird estimation method were used to compute the overall pooled prevalence of Health Professional’s knowledge, practice of basic life support and its predictors. Variations across the included studies were checked using forest plot, funnel plot, I2 statistics, and Egger’s test.

RESULT: A total of 5,258 Health Professionals were included from 11 studies. The pooled prevalence of knowledge and practice outcomes on basic life support in Ethiopia were 47.6 (95% CI: 29.899, 65.300, I2: 99.21%) and 44.42 (95% CI: 16.42, 72.41, I2: 99.69) respectively. Educational status of the Professional’s was significantly associated with knowledge outcome. Those who had degree and above were 1.9 times (AOR: 1.90 (1.24, 2.56)) more likely knowledgeable on basic life support than under degree.

CONCLUSION: The overall pooled estimates of Health Professionals knowledge and practice on basic life support was considerably low. The educational status of the Health Professionals was significantly associated with knowledge outcome. The Health Professionals and responsible stakeholders should focus on the basic life support at Health Institutions. The professionals should advance their knowledge and skill on basic life support for the patients.

PMID:38593136 | DOI:10.1371/journal.pone.0297430