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Nevin Manimala Statistics

Latent Dirichlet allocation topic modeling of free-text responses exploring the negative impact of the early COVID-19 pandemic on research in nursing

Jpn J Nurs Sci. 2022 Nov 30:e12520. doi: 10.1111/jjns.12520. Online ahead of print.

ABSTRACT

AIM: To derive latent topics from free-text responses on the negative impact of the pandemic on research activities and determine similarities and differences in the resulting themes between academic-based and clinical-based researchers.

METHODS: We performed a secondary analysis of free-text responses from a cross-sectional online survey conducted by the Japan Academy of Nursing Science of its members in early 2020. The participants were categorized into two groups by workplace (academic-based and clinical-based researchers). Latent Dirichlet allocation (LDA) topic modeling was used to extract latent topics statistically and list important keywords/text associated with the topics. After organizing similar topics by principal component analysis (PCA), we finally derived topic-associated themes by reading the keywords/texts and determining the similarity and differences of the themes between the two groups.

RESULTS: A total of 201 respondents (163 academic-based and 38 clinical-based researchers) provided free-text responses. LDA identified eight and three latent topics for the academic-based and clinical-based researchers, respectively. While PCA re-grouped the eight topics derived from the former group into four themes, no merging of the topics from the latter group was performed resulting in three themes. The only theme common to the two groups was “barriers to conducting research,” with the remaining themes differing between the groups.

CONCLUSIONS: Using LDA topic modeling with PCA, we identified similarities and differences in the themes described in free-text responses about the negative impact of the pandemic between academic-based and clinical-based researchers. Measures to mitigate the negative impact of pandemics on nursing research may need to be tailored separately.

PMID:36448530 | DOI:10.1111/jjns.12520

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Nevin Manimala Statistics

Evaluation of patient doses for routine digital radiography procedures toward establishing an institutional diagnostic reference levels: A case study in Sri Lanka

J Appl Clin Med Phys. 2022 Nov 30:e13852. doi: 10.1002/acm2.13852. Online ahead of print.

ABSTRACT

The present study was conducted as part of a comprehensive work to establish National Diagnostic Reference Levels (NDRLs) in Sri Lanka for the first time. DRLs can be used as an effective optimization tool for identifying unusually high or low patient doses during X-ray examinations. This study aims to propose institutional DRLs (IDRLs) by measuring the kerma-area product (KAP) of adult patients undergoing routine projection X-ray examinations. The median and the 75th percentile KAP values obtained were compared with that of the single institution KAP values reported from India and Greece. This descriptive cross-sectional study was conducted in a public hospital in Uva province, Sri Lanka, with 400 adult patients aged 18-87 years and weighing 58 ± 20 kg. The patient-specific information (age, sex, weight, and height) and corresponding exposure parameters (tube voltage and current-exposure time product) were obtained. The KAP values were measured, and descriptive statistics were utilized for data analysis. The median KAP values obtained were proposed as IDRLs. The IDRLs in Gy.cm2 were 0.23 for cervical spine anterior-posterior (AP), 0.19 for cervical spine lateral (LAT), 0.10 for chest posterior-anterior (PA), 0.06 for knee joint AP, 0.05 for knee joint LAT, 1.47 for KUB AP, 0.85 for lumbar spine AP, 1.97 for lumbar spine LAT, 0.29 for shoulder joint AP, 0.61 for skull PA, and 0.60 for skull LAT examinations. The maximum to minimum ratio of KAP values ranged from 2.4 for KUB AP to 6.3 for the cervical spine AP examinations. The median and the 75th percentile of most of the examinations were comparable to corresponding KAP values reported by the countries mentioned above, except for the skull PA and LAT examinations. Accordingly, interquartile ranges of exposure parameters are recommended for skull examinations to improve the optimization of patient doses.

PMID:36448529 | DOI:10.1002/acm2.13852

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Nevin Manimala Statistics

C-reactive protein as a prognostic predictor for non-muscle invasive bladder cancer after intravesical bacillus Calmette-Guérin therapy: A Japan Urological Oncology Group study analysis

Int J Urol. 2022 Nov 30. doi: 10.1111/iju.15106. Online ahead of print.

ABSTRACT

OBJECTIVE: To investigate the involvement of pretreatment C-reactive protein (CRP) and neutrophil-to-lymphocyte ratio (NLR) in the prognosis of patients who underwent intravesical bacillus Calmette-Guérin (BCG) therapy for non-muscle invasive bladder cancer (NMIBC).

METHODS: The clinicopathological data of 1709 patients with NMIBC who underwent initial intravesical BCG therapy after transurethral resection of bladder tumor were retrospectively analyzed to evaluate the outcome of intravesical BCG therapy in a multicenter study conducted by the Japan Urological Oncology Group. The prognoses of these patients were analyzed to determine whether the biomarkers (CRP and NLR) could predict the efficacy of intravesical BCG therapy. Patients were divided into two groups according to the pretreatment CRP and NLR, with cutoff values defined as CRP ≥ 0.5 mg/dl and NLR ≥ 2.5, based on several previous reports.

RESULTS: In the univariable analysis, CRP ≥ 0.5 mg/dl was significantly associated with intravesical recurrence, cancer-specific survival, and bladder cancer (BC) progression, while NLR ≥ 2.5 was not significantly associated with patient prognosis. In the multivariable analysis, CRP ≥ 0.5 mg/dl was significantly associated with intravesical recurrence and BC progression. The concordance index was used to examine the accuracy in predicting recurrence and progression events. While CRP was slightly, though not statistically significant, inferior to the European Association of Urology risk classification, the combination of them showed improved predictive accuracy.

CONCLUSION: This study suggests that CRP can be a prognostic factor after intravesical BCG therapy and may provide useful data for determining treatment and follow-up strategies for patients with NMIBC.

PMID:36448522 | DOI:10.1111/iju.15106

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Ultrasound ciliary plasty in glaucoma treatment: A long-term follow-up study

Acta Ophthalmol. 2022 Nov 30. doi: 10.1111/aos.15290. Online ahead of print.

ABSTRACT

PURPOSE: The present study aimed to evaluate the efficacy and safety of ultrasound ciliary plasty (UCP) in patients with open-angle glaucoma for three consecutive years.

METHODS: Sixty-one patients (62 eyes) with primary and secondary glaucoma were enrolled to undergo UCP. The primary outcome measures were intraocular pressure (IOP) reduction, success rates, glaucoma medication use and visual acuity after UCP. An IOP reduction of 20% compared to the baseline value without re-intervention was considered a successful treatment. Complete success was defined as cessation of antiglaucoma medications. Secondary outcome measures included intraoperative and postoperative complications. Measurements were performed preoperatively and at the first week, and 1, 3, 6, 12, 18, 24, 30 and 36 months postoperatively.

RESULTS: A total of 41 patients (41 eyes) were evaluated 36-month after UCP. The mean ± SD values of IOP preoperatively at 1 day, 1 week, 1; 3; 6; 12; 18; 24; 30 and 36 months postoperatively were 22.7 ± 5.0 mmHg, 17.1 ± 4.2 mmHg (p < 0.001), 15.7 ± 4.8 mmHg (p < 0.001), 18.8 ± 4.8 mmHg (p < 0.001), 17.3 ± 3.7 mmHg (p < 0.001), 16.9 ± 3.2 mmHg (p < 0.001), 16.6 ± 2.7 mmHg (p < 0.001), 16.3 ± 3.0 mmHg (p < 0.001), 15.8 ± 3.4 mmHg (p < 0.001), 15.3 ± 2.1 mmHg (p < 0.001) and 16.3 ± 3.0 mmHg (p < 0.001), respectively. The mean IOP at the last follow-up was reduced by 28.5%. The qualified success rate was 64.0%. All patients at 36-month follow-up visit required the use of antiglaucoma medications – none of the patients achieved complete success. The decrease in the number of antiglaucoma medications was statistically significant at each follow-up visit compared to the baseline. Choroid detachment was observed in three patients (4.8%), while macular oedema was observed in three patients (4.8%) after the procedure. No other major intraoperative or postoperative complications occurred.

CONCLUSION: Ultrasound ciliary plasty seems to be an effective and well-tolerated method to reduce IOP in patients with refractory glaucoma. Further studies with a larger group are needed to confirm the efficacy of this procedure.

PMID:36448501 | DOI:10.1111/aos.15290

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Nevin Manimala Statistics

Child pedestrian, drowning and burn mortality in Johannesburg

Int J Inj Contr Saf Promot. 2022 Nov 30:1-7. doi: 10.1080/17457300.2022.2147193. Online ahead of print.

ABSTRACT

The study examined the extent, demographics and risks for child pedestrian, burns and drowning mortality in Johannesburg. Information on the demographics, scene and temporal circumstances for childhood injury deaths from 2000 to 2010 was gleaned from the National Injury Mortality Surveillance System. Descriptive statistical methods were used. The study recorded 756 pedestrian (8.7/100,000), 439 drowning (5.1/100,000), and 399 burn injury deaths (4.6/100,000) among children aged 0-14 years. Male children were the main victims, with male-to-female ratios of 2.3 for drowning, 1.7 for pedestrian and 1.2 for burn mortality. The pattern of child mortality differed across age groups with older children recording higher rates for pedestrian deaths and younger children higher rates for the non-traffic deaths. Pedestrian and burn mortality especially affected black children, while drowning affected both black and white children. The time, day and month of greatest injury mortality varied by injury cause, with e.g. pedestrian mortality common in afternoons and evenings, weekends, and dispersed across the year although increasing towards year end. The study highlighted the salience of differentiating risks for childhood injuries by discrete external cause for purposes of informing prevention responses.

PMID:36448497 | DOI:10.1080/17457300.2022.2147193

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Nevin Manimala Statistics

Correlation analysis of self-directed learning ability, self-efficacy and academic burnout of junior nursing college students in closed management colleges

Nurs Open. 2022 Nov 30. doi: 10.1002/nop2.1509. Online ahead of print.

ABSTRACT

AIMS: To understand the status quo of self-directed learning ability, self-efficacy and academic burnout of junior nursing college students, since the closed management mode was implemented during COVID-19 pandemic disease.

DESIGN: Cross-sectional study.

METHODS: Participants came from 3,051 junior nursing college students of a college in Zhengzhou City, Henan Province, China. Data were collected by online questionnaire and analysed by SPSS25.0 (a statistical package for social science) and AMOS24.0 software.

RESULTS: High self-directed learning ability and self-efficacy were related to low levels of academic burnout (p < .01). In addition, the analysis of mediation effect indicated that the influence of self-directed learning ability on academic burnout was not mediated by self-efficacy.

PMID:36448492 | DOI:10.1002/nop2.1509

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An MRI-Based Radiomics Nomogram to Assess Recurrence Risk in Sinonasal Malignant Tumors

J Magn Reson Imaging. 2022 Nov 30. doi: 10.1002/jmri.28548. Online ahead of print.

ABSTRACT

BACKGROUND: Sinonasal malignant tumors (SNMTs) have a high recurrence risk, which is responsible for the poor prognosis of patients. Assessing recurrence risk in SNMT patients is a current problem.

PURPOSE: To establish an MRI-based radiomics nomogram for assessing relapse risk in patients with SNMT.

STUDY TYPE: Retrospective.

POPULATION: A total of 143 patients with 68.5% females (development/validation set, 98/45 patients).

FIELD STRENGTH/SEQUENCE: A 1.5-T and 3-T, fat-suppressed fast spin echo (FSE) T2-weighted imaging (FS-T2WI), FSE T1-weighted imaging (T1WI), and FSE contrast-enhanced T1WI (T1WI + C).

ASSESSMENT: Three MRI sequences were used to manually delineate the region of interest. Three radiomics signatures (T1WI and FS-T2WI sequences, T1WI + C sequence, and three sequences combined) were built through dimensional reduction of high-dimensional features. The clinical model was built based on clinical and MRI features. The Ki-67-based and tumor-node-metastasis (TNM) model were established for comparison. The radiomics nomogram was built by combining the clinical model and best radiomics signature. The relapse-free survival analysis was used among 143 patients.

STATISTICAL TESTS: The intraclass/interclass correlation coefficients, univariate/multivariate Cox regression analysis, least absolute shrinkage and selection operator Cox regression algorithm, concordance index (C index), area under the curve (AUC), integrated Brier score (IBS), DeLong test, Kaplan-Meier curve, log-rank test, optimal cutoff values. A P value < 0.05 was considered statistically significant.

RESULTS: The T1 + C-based radiomics signature had best prognostic ability than the other two signatures (T1WI and FS-T2WI sequences, and three sequences combined). The radiomics nomogram had better prognostic ability and less error than the clinical model, Ki-67-based model, and TNM model (C index, 0.732; AUC, 0.765; IBS, 0.185 in the validation set). The cutoff values were 0.2 and 0.7 and then the cumulative risk rates were calculated.

DATA CONCLUSION: A radiomics nomogram for assessing relapse risk in patients with SNMT may provide better prognostic ability than the clinical model, Ki-67-based model, and TNM model.

EVIDENCE LEVEL: 3.

TECHNICAL EFFICACY: Stage 5.

PMID:36448476 | DOI:10.1002/jmri.28548

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Impact of rapid rehabilitation surgery on perioperative nursing in patients undergoing cardiac surgery: A meta-analysis

J Card Surg. 2022 Nov 30. doi: 10.1111/jocs.17226. Online ahead of print.

ABSTRACT

OBJECTIVE: To systematically evaluate the effect of enhanced recovery after surgery (ERAS) on perioperative nursing of patients undergoing cardiac surgery.

METHODS: A systematic literature search was performed in PubMed, Embase, Web of science, Cochrane, CNKI, Wanfang, and VIP using predefined search strings from inception of database to May 2021. Randomized control trials (RCTs) with sample size >40 on cardiac surgery with either ERAS nursing or routine nursing reporting extubation (trachea) time, length of stay, out of bed activity time, and nursing satisfaction were included in the analysis. Stata SE 12.0 software was used for statistical analysis.

RESULTS: A total of 27 RCTs were included. All the included studies were Chinese due to lack of studies in English. The results of meta-analysis showed that the extubation time standardized mean difference ([SMD] = -3.11; 95% confidence interval [CI]: -3.77, -2.45; p < .001), out of bed activity time (SMD = -2.89; 95% CI: -3.34, -2.44; p < .001), and hospitalization time (SMD = -2.08; 95% CI: -2.37, -1.79; p < .001) of cardiac surgery patients with ERAS nursing was significantly shorter than those with routine nursing. The patient’s satisfaction after surgery with ERAS was higher than that of routine nursing relative risk ([RR] = 1.24; 95% CI: 1.18, 1.30; p < .001).

CONCLUSION: ERAS nursing can accelerate perioperative rehabilitation of patients undergoing cardiac surgery and highly accepted by patients.

PMID:36448468 | DOI:10.1111/jocs.17226

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Artificial intelligence model with deep learning in nonalcoholic fatty liver disease diagnosis: genetic based artificial neural networks

Nucleosides Nucleotides Nucleic Acids. 2022 Nov 30:1-9. doi: 10.1080/15257770.2022.2152046. Online ahead of print.

ABSTRACT

Nonalcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease in the world. The NAFLD spectrum includes simple steatosis, steatohepatitis, fibrosis, cirrhosis, and hepatocellular carcinoma (HCC). Genetic, nutritional factors, obesity, insulin resistance, gut microbiota are among the risk factors for NAFLD. The genetic variant Patatin-like phospholipase domain-containing protein 3 (PNPLA3) plays an important role in the development of a number of liver diseases ranging from steatosis, chronic hepatitis, cirrhosis and HCC. Due to the increase in the prevalence of NAFLD, new models are being developed with machine learning, deep learning, artificial neural network (ANN) algorithms in the field of artificial intelligence (AI) to determine low-cost, noninvasive diagnostic methods. Models developed with ANN from AI modules are important in order to examine biochemical and genomic information in detail in the diagnosis of NAFLD. The aim of this study is to develop a simple ANN model using biochemical and genotypic parameters in the diagnosis of NAFLD. A total of 300 patients followed up with the diagnosis of NAFLD and 100 controls were included in the study. The data set was divided into two as training and test set. Genotyping of PNPLA3 (CC, CG, GG) as genomic analysis was performed with real time PCR device. The algorithm used for the diagnosis of NAFLD was designed using age, body mass index (BMI), mean platelet volume (MPV), insulin resistance (IR), alanine aminotransferase (ALT), genotype PNPLA3 (CC, CG, GG) parameters. MLP Classifier algorithm from ANN was used in the development of the model. ANN algorithms are used in python programming language. Statistical analyzes were made in SPSS program. Percent accuracy, area under the ROC curve, confusion matrix, Positive (PPV) and Negative Predicted Value (NPV) values, precision, recall, and f1-score results were determined. The accuracy percentage was determined as 0.979 in the train set and 0.970 in the test set. The Log Loss value was set to 0.09. The developed neural network achieved an accuracy percentage of 97.0% during testing, with an area under the ROC curve value of 0.95. We think that the ANN model developed with genomic and biochemical parameters can be used as a cost-effective, noninvasive new predictive diagnostic model in clinical practice in the diagnosis of NAFLD.

PMID:36448439 | DOI:10.1080/15257770.2022.2152046

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Revisiting chronic low back pain: evidence that it is not non-specific

J Osteopath Med. 2022 Nov 29. doi: 10.1515/jom-2022-0092. Online ahead of print.

ABSTRACT

CONTEXT: There is a common symptom pattern with most chronic low back pain (CLBP), suggesting that there is a common underlying etiology, belying the term “nonspecific.” Many studies of CLBP and its treatment have been conducted with the assumption of nonspecificity, and as a result, treatment has not been focused, thus there has not been a significant change in CLBP prevalence over the past several decades. It is the thesis of this study to show that there is an underlying, specific cause of CLBP and that the presumption that CLBP is nonspecific is misdirected. The lumbosacropelvic (LSP) region, including the sacroiliac joint (SIJ), is part of a neuromusculoskeletal (NMSK) feedback system, and it is proposed here that CLBP is the result of a change in the feedback (afferent) aspect in that system.

OBJECTIVES: The objectives of this study are to show that CLBP presents as a pattern of symptoms that actually represents the final common pathway for a dysfunctional LSP joint system. Rather than being “nonspecific,” the majority of CLBP has an underlying cause that is quite specific and predictable.

METHODS: A total of 252 patients were seen for CLBP, 67% of whom were diagnosed with an SIJ dysfunction. The presence of pain was recorded from seven structures most closely associated with CLBP. The conditional probabilities of having each pain generator given a SIJ dysfunction and an SIJ dysfunction given the presence of the pain generator were estimated, and associations were analyzed utilizing chi-square tests. Phi coefficients and odds ratios were utilized to quantify the strength of the association. The multivariable logistic regression model was fit to relate the presence or absence of the SIJ dysfunction to the seven pain generators.

RESULTS: The associations between SIJ dysfunction and each pain generator were statistically significant. Phi coefficients indicated moderate strengths of these bivariate associations. Iliolumbar ligament (ILL) and psoas muscle (PSM) were significant predictors of SIJ dysfunction in the multivariable model.

CONCLUSIONS: Seven pain generators had a strong association with SIJ dysfunction. This empirical clinical evidence supports our hypothesis that LSP system dysfunction, as evidenced by SIJ dysfunction, is a common source of symptom patterning associated with CLBP and is most likely the causal element. This is evidence that most CLBP is not “nonspecific” but rather the result of changes made by the NMSK control system for the LSP region.

PMID:36448422 | DOI:10.1515/jom-2022-0092