Tag: statistics

Turk J Med Sci. 2023 Oct 10;53(6):1776-1785. doi: 10.55730/1300-0144.5747. eCollection 2023.

ABSTRACT

BACKGROUND/AIM: Community-acquired pneumonia (CAP) is one of the leading infectious causes of mortality, and diabetes mellitus is a globally prevalent disease. Consequently, the cooccurrence of these two disorders can be common and create challenging medical conditions. Therefore, it was aimed to compare the various aspects of CAP in diabetic and nondiabetic patients, in order to have a comprehensive and comparative picture of the differences.

MATERIALS AND METHODS: In this cross-sectional study, CAP patients with and without diabetes were assessed for clinicoradiological signs, laboratory features, disease severity, and pneumonia outcomes.

RESULTS: Analyzed herein were 172 CAP patients (77 had diabetes and 95 were nondiabetic). Clinical and radiological signs of pneumonia were mostly similar between the groups, except for purulent sputum, which was more prevalent among the nondiabetic patients. The laboratory results were also mostly similar. However, analysis of the outcomes and prognosis showed different results. The diabetic patients had a longer mean duration of hospital stay (8.52 days vs. 7.93 days, p = 0.015), higher median pneumonia severity based on the CURB-65 criteria (3 vs. 2, p = 0.016), and higher intensive care unit (ICU) admission requirement (22.1% vs. 7.3%, p = 0.004). Moreover, the mortality rate for the diabetic patients was nonsignificantly higher (16.8% vs. 15.7%, p = 0.453). Furthermore, the results of the logistic regression analysis showed that the diabetic patients had significantly higher odds of experiencing more severe forms of pneumonia (adjusted odds ratio (AOR): 5.77, 95% CI: 2.52-13.20), requiring ICU hospitalization (AOR: 3.56, 95% CI: 1.39-9.11), and having a longer hospital stay (AOR: 2.01, 95% CI: 1.09-3.71). In addition, although there was no significant relationship between the severity of pneumonia and the amount of glycated hemoglobin (HbA1c) in the diabetic patients (p = 0.940), the higher level of HbA1c in the nondiabetic patients was significantly correlated with a higher severity of pneumonia (p = 0.002).

CONCLUSION: While diabetic patients with CAP have the same clinicoradiological and laboratory features as nondiabetic patients, the presence of diabetes can significantly worsen the outcomes and prognosis of pneumonia.

PMID:38813518 | PMC:PMC10760569 | DOI:10.55730/1300-0144.5747

Turk J Med Sci. 2023 Oct 12;53(6):1614-1620. doi: 10.55730/1300-0144.5730. eCollection 2023.

ABSTRACT

BACKGROUND/AIM: This study investigated the possible degeneration in cochlear morphology induced by preeclampsia (PE) and the therapeutic/preventive effect of vitamin D (Vit D) and magnesium sulfate (MgSO₄) used separately and together on feto-maternal outcomes.

MATERIALS AND METHODS: We created PE in rats using a reduced uterine perfusion pressure (RUPP) animal model and recorded blood pressure (BP), embryonic survival (ES), and embryonic weight (EW) and evaluated cochlear morphology by electron microscopy.

RESULTS: The PE group had elevated BP, a decreased number and weight of live pups, and significant degeneration in the cochlea compared to the sham group. In the PEV group, we observed significant beneficial effects of Vit D supplementation at 14.5 and 19.5 dpc in terms of BP (p < 0.05), EW (p < 0.001), and cochlear degeneration compared to the PE group. In the PEM group, BP (p < 0.05) and cochlear degeneration nearly reached the level found in the sham group. However, although the EW was statistically different in the PE group, it did not reach sham group levels. We also observed that BP returned to sham level (p < 0.01) and noticed significant increases in the EW (p < 0.0001) and ES (p = 0.017) in the PEMV group compared to the PE group. According to the scanning electron microscope results, combined administration of VitD and MgSO₄ is more effective than separate administration in improving cochlear degeneration induced by PE.

CONCLUSION: The administration of Vit D and MgSO₄ during pregnancy has beneficial effects on PE pathology and may play a significant role in preventing PE-related complications, including cochlear degeneration.

PMID:38813514 | PMC:PMC10760567 | DOI:10.55730/1300-0144.5730

Turk J Med Sci. 2023 Oct 25;53(6):1840-1851. doi: 10.55730/1300-0144.5754. eCollection 2023.

ABSTRACT

BACKGROUND/AIM: The cause and treatment of electrical status epilepticus during sleep (ESES), one of the epileptic encephalopathies of childhood, is unclear. The aim of this study was to evaluate possible microstructural abnormalities in the brain using advanced magnetic resonance imaging (MRI) techniques in ESES patients with and without genetic mutations.

MATERIALS AND METHODS: This research comprised 12 ESES patients without structural thalamic lesions (6 with genetic abnormalities and 6 without) and 12 healthy children. Whole-exome sequencing was used for the genetic mutation analysis. Brain MRI data were evaluated using tractus-based spatial statistics, voxel-based morphometry, a local gyrification index, subcortical shape analysis, FreeSurfer volume, and cortical thickness. The data of the groups were compared.

RESULTS: The mean age in the control group was 9.05 ± 1.85 years, whereas that in the ESES group was 9.45 ± 2.72 years. Compared to the control group, the ESES patients showed higher mean thalamus diffusivity (p < 0.05). ESES patients with genetic mutations had lower axial diffusivity in the superior longitudinal fasciculus and gray matter volume in the entorhinal region, accumbens area, caudate, putamen, cerebral white matter, and outer cerebellar areas. The superior and middle temporal cortical thickness increased in the ESES patients.

CONCLUSION: This study is important in terms of presenting the microstructural evaluation of the brain in ESES patients with advanced MRI analysis methods as well as comparing patients with and without genetic mutations. These findings may be associated with corticostriatal transmission, ictogenesis, epileptogenesis, neuropsychiatric symptoms, cognitive impairment, and cerebellar involvement in ESES. Expanded case-group studies may help to understand the physiology of the corticothalamic circuitry in its etiopathogenesis and develop secondary therapeutic targets for ESES.

PMID:38813507 | PMC:PMC10760578 | DOI:10.55730/1300-0144.5754

Eur J Cancer. 2024 May 15;206:114118. doi: 10.1016/j.ejca.2024.114118. Online ahead of print.

ABSTRACT

BACKGROUND: Despite contributions provided by the recent clinical trials, several issues and challenges still remain unsolved in adjuvant colon cancer (CC). Hence, further studies should be planned to better refine risk assessment as well as to establish the optimal treatment strategy in the adjuvant setting. However, it is necessary to request adequate, contemporary and relevant variables and report them homogeneously in order to bring maximal information when analyzing their prognostic value.

MATERIAL AND METHODS: The project was devised to gain a consensus from experts engaged in the planning, accrual and analyses of stage II and III CC clinical trials, to identify mandatory and recommended baseline variables in order to i) harmonize future data collection worldwide in clinical trials dedicated to adjuvant treatment of CC; ii) propose guidance for Case Report Forms to be used for clinical trials in this setting. A total of 72 questions related to variables that should be reported and how to report them in adjuvant clinical trials were approved and then voted to reach a final consensus from panelists.

RESULTS: Data items on patient-related factors, histopathological features, molecular profile, circulating biomarkers and blood analyses were analyzed and discussed by the whole expert panel. For each item, we report data supporting the acquired consensus and the relevant issues that were discussed. Nineteen items were deemed to be mandatory for resected stage III patients and 24 for resected stage II disease. In addition, 9 and 4 items were judged as recommended for stage III and II, respectively.

CONCLUSION: In our opinion, these 28 variables should be used and uniformly reported in more comprehensive CRFs as research groups design future clinical trials in the field of adjuvant colon cancer.

PMID:38810317 | DOI:10.1016/j.ejca.2024.114118

Reprod Biomed Online. 2024 Mar 21;49(2):103947. doi: 10.1016/j.rbmo.2024.103947. Online ahead of print.

ABSTRACT

RESEARCH QUESTION: What are the efficacy, safety and reproductive outcomes of intrauterine balloon stent placement for 4 or 6 weeks after hysteroscopic adhesiolysis?

DESIGN: This retrospective cohort study was conducted at a university-affiliated hospital, and included 155 women with moderate to severe intrauterine adhesions who underwent hysteroscopic adhesiolysis between March 2016 and December 2019. Participants were divided according to whether the heart-shaped balloon stent was left in place for 4 (group 1) or 6 (group 2) weeks after surgery. Stents removed at the second-look hysteroscopy 4 or 6 weeks after surgery were sent for culturing of common bacteria. The incidence of adhesion reformation, adhesion score reduction, bacterial colonization of the intrauterine balloon stent, live birth rate and time to live birth were analysed.

RESULTS: Group 2 had a significantly lower adhesion reformation rate (45.7% versus 28.2%, P = 0.024) and a more significant reduction in adhesion score (5.2 ± 2.1 versus 6.3 ± 2.2, P = 0.003) compared with group 1. However, no statistical difference was observed in the percentage of bacterial colonization of the intrauterine balloon stent (55.9% versus 66.7%, P = 0.174), live birth rate (52.4% versus 42.3%, P = 0.331) or time to live birth (hazard ratio 1.09, 95% confidence interval 0.60-1.96, P = 0.778) between the two groups.

CONCLUSIONS: Extending intrauterine balloon stent use from 4 to 6 weeks further reduces the adhesion reformation rate after hysteroscopic adhesiolysis in patients with moderate to severe intrauterine adhesion. No increase in bacterial colonization of the balloon stent was observed. Extending the duration of intrauterine balloon stent placement did not significantly affect live birth rates.

PMID:38810315 | DOI:10.1016/j.rbmo.2024.103947

Med Phys. 2024 May 29. doi: 10.1002/mp.17190. Online ahead of print.

ABSTRACT

BACKGROUND: As radiotherapy techniques advance, so do planning methods for multi-target intracranial SRS cases. Multi-target-single-isocenter (MTSI) planning offers high-precision beam delivery with shortened duration. However, accommodating all targets in a single Patient-Specific-Quality-Assurance (PSQA) with QA devices like SRS MapCHECK (SRS MC) is generally impractical.

PURPOSE: Consequently, we conducted PSQA, using a custom script, by relocating each Target or Neighboring-Target-Group (T-NTG) relative to the beam isocenter on the PSQA device, ensuring each target’s dose coverage at high precision.

METHODS: SRS treatment plans use 6MV-FFF beams, consisting of four Volumetric Modulated ARC Therapy (VMAT) arcs, including one full-arc and three half arcs with couch-kicks. A custom script calculated T-NTG coordinates relative to the beam isocenter. QA verification plans were created for each T-NTG, redefining the beam isocenter for precise alignment with the center of the SRS MC. CBCT images were acquired during PSQA for SRS MC alignment, and gamma-index analysis (GIA) was performed. A single-tail paired t-test assessed the passing rate (PR) for 75 QA verification plans.

RESULTS: GIA with l.0 mm/2.0% criteria for each QA plan yielded a PR > 95.5%, with an average of 98.9%. Plans achieving PR > 99.0% and > 97.0% constituted 63% and 92% of studied plans, respectively. Statistical significance was observed in a t-test with an ideal PR value of 100%, while insignificance was found with a PR value of 99%, suggesting that PSQA for individual targets consistently approaches 99% PR. In MTSI cases using 6MV-FFF beams, targets within the lateral dose-fall-off region require careful verification for acceptability. Our clinical study on individual T-NTG relocation demonstrates that the presented PSQA methods are generally acceptable, supported by a statistically insignificant PR against a 99% PR value.

CONCLUSIONS: Presented statistical analysis results indicate that the proposed PSQA approach can serve as a reliable tool in clinical settings.

PMID:38810282 | DOI:10.1002/mp.17190

Phytopathology. 2024 May 29. doi: 10.1094/PHYTO-01-24-0009-PER. Online ahead of print.

ABSTRACT

In the past decade, there has been a recognized need for innovative methods to monitor and manage plant diseases aiming to meet the precision demands of modern agriculture. Over the last 15 years, significant advances in detection, monitoring, and management of plant diseases have been made, largely propelled by cutting-edge technologies. Recent advances in precision agriculture have been driven by sophisticated tools such as sensors, artificial intelligence, microsensor networks, and autonomous vehicles. These technologies have enabled the development of novel cropping systems, allowing for targeted management of crops, contrasting with traditional, homogeneous treatment of large crop areas. Research in this field is usually highly collaborative, and interdisciplinary endeavor. It brings together experts from diverse fields such as plant pathology, computer science, statistics, engineering, and agronomy. Despite the progress, translating the advancements in the precision of decision-making or automation into agricultural practice remains a challenge. Enhancing the accuracy and timeliness of disease detection continues to be a priority, with data-driven artificial intelligence systems poised to play a pivotal role. This perspective addresses critical questions and challenges faced in the implementation of digital technologies for plant disease management. It underscores the urgency of integrating innovative technological advances with traditional integrated pest management (IPM). It highlights unresolved issues regarding the establishment of control thresholds for site-specific treatments and the necessary alignment of digital technology use with regulatory frameworks. Importantly, the paper calls for intensified research efforts, widespread knowledge dissemination, and education to optimize the application of digital tools for plant disease management.

PMID:38810274 | DOI:10.1094/PHYTO-01-24-0009-PER

Scand J Work Environ Health. 2024 May 29:4169. doi: 10.5271/sjweh.4169. Online ahead of print.

ABSTRACT

OBJECTIVES: Physicians have been shown to have lower mortality compared to the general population, particularly regarding lifestyle-associated causes of death. Prior literature is divided on whether this is due to higher socioeconomic position (SEP), healthier lifestyle, or other specific occupational characteristics. This study analyzed the mortality of Austrian physicians compared to the general population and other (health) professionals with a similar SEP, and investigated patterns of lifestyle-associated mortality among physicians.

METHODS: Data from professional associations and cause-of-death statistics were collated to determine causes of death for all occupational groups. Gender-specific age-standardized mortality rates (ASMR) and standardized rate ratios (SRR) were calculated to compare main causes of death [cancer, cardiovascular disease (CVD), external causes] among physicians to other (health) professionals and the general population. Standardized mortality ratios (SMR) were calculated for more detailed causes of death in physicians compared to the general population.

RESULTS: Physicians had lower all-cause mortality than the general population [SRR 0.45, 95% confidence interval (CI) 0.41-0.49 for males and SRR 0.60, 95% CI 0.54-0.66 for females] and health professionals (SRR 0.72, 95% CI 0.60-0.88 for males and SRR 0.77, 95% CI 0.63-0.93 for females), mostly due to low CVD and cancer mortality. SMR for detailed causes of death among physicians exhibited a pattern of particularly low mortality in lifestyle-associated causes of death and an increased SMR for suicide among female physicians (SMR 1.58, 95% CI 1.22-2.02).

CONCLUSIONS: This study confirmed lower mortality among physicians compared to the general population and compared to other (health) professionals. Low physician mortality can be primarily explained by lifestyle-associated causes of death.

PMID:38810246 | DOI:10.5271/sjweh.4169

J Craniofac Surg. 2024 May 29. doi: 10.1097/SCS.0000000000010328. Online ahead of print.

ABSTRACT

Microvascular reconstruction of the scalp is frequently indicated in patients with locally advanced tumors, among other etiologies, in a relatively high-risk, older patient population that often has multiple medical comorbidities. A retrospective analysis was performed on patients undergoing microvascular scalp reconstruction at Emory University Hospital and Grady Memorial Hospital between 2011 and 2021. Patient demographics, wound characteristics, operative details, and complications were recorded. Statistical analysis using univariate and multivariate models was performed. Forty-two patients underwent 45 microvascular scalp reconstructive procedures during the study period. The median age was 63 years. Wounds were predominantly oncologic (n=38, 84.4%) and frequently involved deeper structures [calvarium (n=38, 84.4%), dura (n=17, 37.8%)]. At a median follow-up of 350 days, 33 patients (73.3%) had healed flaps, 9 (20.0%) had wound healing issues but ultimately successful reconstruction, and 3 (6.7%) experienced flap failure. Most patients (n=33, 80.9%) were discharged home or to a rehabilitation facility, while the remaining 8 patients (19.1%) were discharged to hospice or died. The 30-day mortality was 4 patients (8.9%) and the 6-month mortality was 8 patients (20.5%). There was a statistically significant difference in 30-day mortality (P=0.0001) on univariate analysis and 6-month mortality (P=0.003) on both univariate and multivariate analysis for patients >70 years. While age >70 years is a risk factor for mortality in patients undergoing microvascular scalp reconstruction, mortality was commonly related to underlying disease processes rather than complication of surgery. Microvascular reconstruction for scalp defects has a high success rate and can be offered as a palliative procedure for patients with locally advanced cancers, advanced age, and multiple comorbidities.

PMID:38810244 | DOI:10.1097/SCS.0000000000010328

J Osteopath Med. 2024 May 30. doi: 10.1515/jom-2024-0016. Online ahead of print.

ABSTRACT

CONTEXT: Racial inequalities across social determinants of health (SDOHs) are often influenced by discriminatory policies that reinforce systems that further uphold these disparities. There is limited data describing the influence of food insecurity (FI) on childhood racial discrimination.

OBJECTIVES: Our objective was to determine if the likelihood of experiencing racial discrimination was exacerbated by FI.

METHODS: We conducted a cross-sectional analysis of the 2016-2020 National Survey of Children’s Health (NSCH) to extract data on childhood racial discrimination and food security. We extracted sociodemographic variables to utilize as controls and constructed logistic regression models to determine associations, via odds ratios (ORs), between food security and whether the child experienced racial discrimination.

RESULTS: We found statistically significant associations between experiencing FI and childhood racial discrimination. Individuals who experienced food shortages were significantly more likely to experience racial discrimination compared to those without food limitations when controlling for race, food voucher usage, age, and % federal poverty guidelines (FPG, adjusted odds ratio [AOR]: 3.34; 95 % CI: 2.69-4.14).

CONCLUSIONS: Our study found that parents of minority children all reported high rates of racial discrimination, which was exacerbated by concurrent FI. Children of families that were the most food insecure reported the highest percentage of racial discrimination at 11.13 %, compared with children who always had enough nutritious meals to eat at 2.87 %. Acknowledging the intersection that exists between FI, race, gender, and socioeconomic status (SES), might be a way forward in addressing the adverse health effects experienced by food-insecure children and adults.

PMID:38810224 | DOI:10.1515/jom-2024-0016