Category: Statistics

J Cancer Res Clin Oncol. 2023 Nov 15. doi: 10.1007/s00432-023-05466-8. Online ahead of print.

ABSTRACT

BACKGROUND: Ovarian carcinoma is the most lethal gynecologic malignancy because of its late diagnosis, extremely high recurrence rate, and limited curative treatment options. In clinical practice, high-grade serous carcinoma (HGSC) predominates due to its frequency, high aggressiveness, and rapid development of drug resistance. Recent evidence suggests that CXCL12 is an important immunological factor in ovarian cancer progression. Therefore, we investigated the predictive and prognostic significance of the expression of this chemokine in tumor and immune cells in patients with HGSC.

METHODS: We studied a cohort of 47 primary high-grade serous ovarian carcinomas and their associated recurrences. A tissue microarray was constructed to evaluate the CXCL12 immunostained tumor tissue. CXCL12 expression was evaluated and statistically analyzed to correlate clinicopathologic data, overall survival, and recurrence-free survival.

RESULTS: A high proportion of CXCL12 + positive immune cells in primary ovarian serous carcinoma correlated significantly with chemosensitivity (p = 0.005), overall survival (p = 0.021), and longer recurrence-free survival (p = 0.038). In recurrent disease, high expression of CXCL12 was also correlated with better overall survival (p = 0.040). Univariate and multivariate analysis revealed that high CXCL12 + tumor-infiltrating immune cells (TICs) (HR 0.99, p = 0.042, HR 0.99, p = 0.023, respectively) and combined CXCL12 + /CD66b + infiltration (HR 0.15, p = 0.001, HR 0.13, p = 0.001, respectively) are independent favorable predictive markers for recurrence-free survival.

CONCLUSION: A high density of CXCL12 + TICs predicts a good response to chemotherapy, leading to a better overall survival and a longer recurrence-free interval. Moreover, with concomitant high CXCL12/CD66b TIC density, it is an independent favorable predictor of recurrence-free survival in patients with ovarian carcinoma.

PMID:37966614 | DOI:10.1007/s00432-023-05466-8

Matern Child Health J. 2023 Nov 15. doi: 10.1007/s10995-023-03853-8. Online ahead of print.

ABSTRACT

INTRODUCTION: Excessive maternal gestational weight gain (GWG) is strongly correlated with childhood obesity, yet how excess maternal weight gain and gestational diabetes mellitus (GDM) interact to affect early childhood obesity is poorly understood. The purpose of this study was to investigate whether overall and trimester-specific maternal GWG and GDM were associated with obesity in offspring by age 6 years.

METHODS: A cohort of 10,335 maternal-child dyads was established from electronic health records. Maternal weights at conception and delivery were estimated from weight trajectory fits using functional principal components analysis. Kaplan-Meier curves and Cox regression, together with generalized raking, examined time-to-childhood-obesity.

RESULTS: Obesity diagnosed prior to age 6 years was estimated at 19.7% (95% CI: 18.3, 21.1). Maternal weight gain during pregnancy was a strong predictor of early childhood obesity (p < 0.0001). The occurrence of early childhood obesity was lower among mothers with GDM compared with those without diabetes (adjusted hazard ratio = 0.58, p = 0.014). There was no interaction between maternal weight gain and GDM (p = 0.55). Higher weight gain during the first trimester was associated with lower risk of early childhood obesity (p = 0.0002) whereas higher weight gain during the second and third trimesters was associated with higher risk (p < 0.0001).

DISCUSSION: Results indicated total and trimester-specific maternal weight gain was a strong predictor of early childhood obesity, though obesity risk by age 6 was lower for children of mothers with GDM. Additional research is needed to elucidate underlying mechanisms directly related to trimester-specific weight gain and GDM that impede or protect against obesity prevalence during early childhood.

PMID:37966561 | DOI:10.1007/s10995-023-03853-8

Eur Arch Otorhinolaryngol. 2023 Nov 15. doi: 10.1007/s00405-023-08322-0. Online ahead of print.

ABSTRACT

OBJECTIVE: To assess the efficacy of newly designed butterfly splint with special technique for middle turbinate stabilization in preventing adhesion following bilateral endoscopic sinus surgery (ESS) for chronic rhinosinusitis with nasal polyps (CRSwNP).

STUDY DESIGN: Prospective, double-blind, randomized controlled.

SETTING: University hospitals.

METHODS: Following ESS, in cases of traumatized and/or unstable middle turbinates, newly designed butterfly plastic splint was randomly inserted in the middle meatus of one nasal side, while no splint was inserted in the other (control). Patients were followed up on after 1 week, 1 month, and 6 months. Endoscopic examination and a visual analog scale were used to evaluate each side of the nasal cavity for adhesion, crusting, pus, pain, nasal obstruction, and nasal discharge.

RESULTS: Thirty patients (60 nasal sides) were included. For all investigated parameters, there was no significant difference between the splinted and non-splinted sides at the first week visit. Adhesion was found significantly less in the splinted sides (3%) than the non-splinted sides (27%) after 1 month (P = 0.038). The adhesion rate in the splinted sides remained 3% at the 3 month follow-up visit, however, in the non-splinted sides, the rate increased up to 30% (P = 0.007). Throughout the follow-up visits, all other investigated parameters remained statistically insignificant between both sides.

CONCLUSIONS: The newly designed butterfly plastic splints to avoid middle turbinate adhesion is safe and effective in both reducing middle meatal adhesion with low complication rate in CRSwNP patients undergoing ESS and middle turbinate stabilization in its intermediate position.

PMID:37966539 | DOI:10.1007/s00405-023-08322-0

J Autism Dev Disord. 2023 Nov 15. doi: 10.1007/s10803-023-06189-y. Online ahead of print.

ABSTRACT

PURPOSE: To explore the recalled experience of pregnancy and motherhood in women diagnosed with Autism Spectrum Disorders (ASD) without intellectual disabilities, focusing on sensory perceptions and mood.

METHODS: We retrospectively evaluated, through an ad-hoc structured interview, the sensory sensitivity during the pre-partum, the peri-partum, and the post-partum of thirty-three mothers with ASD and thirty-two neurotypical mothers. Participants also underwent a psychometric assessment about autistic traits, general sensory sensitivity, and post-partum depressive symptomatology.

RESULTS: Mothers with ASD recalled a higher sensitivity than the comparison group across the three time-points; however, during the peri-partum their recalled hypersensitivity decreases, and in the post-partum it returned as high as before childbirth. The difference in the length of recall between groups did not statistically influence our results. Higher levels of autistic traits correlated with higher depressive post-partum symptomatology.

CONCLUSIONS: Mothers with ASD seem to recall their experience of pregnancy, childbirth, and post-partum period differently from neurotypical mothers, particularly in terms of hypersensitivity. The correlation with depressive symptoms and the potential role of oxytocin and of long-term memory (encoding and recollection) are discussed. Further exploring these aspects might give fundamental hints to provide tailored support to mothers with ASD during pregnancy and motherhood.

PMID:37966534 | DOI:10.1007/s10803-023-06189-y

J Autism Dev Disord. 2023 Nov 15. doi: 10.1007/s10803-023-06165-6. Online ahead of print.

ABSTRACT

Caring for children with different developmental trajectories brings various challenges, which are often exacerbated in low-resource settings. International research has shown that raising a child with autism strongly impacts family caregivers, particularly mothers. There is a dearth of information regarding caregiving for individuals with autism in the Kurdistan Region of Iraq (KRI) and for fathers as well as mothers. This study examined the similarities and differences in caregiving for mothers and fathers of a child with autism in KRI using validated rating scales to measure various aspects of their general well-being. Over two years, a sample of 118 parents of individuals with autism (81 mothers and 37 fathers) self-completed the rating scales, which were further discussed through individual interviews with service personnel mainly known to them. The findings indicated that mothers and fathers were similarly impacted. Although there were no statistically significant differences in the ratings of their general health, sources of stress, family functioning, and satisfaction with caregiving, the majority of parents had elevated ratings on all the measures. In addition, parents who rated their children higher on the Aberrant Behavior Checklist had significantly higher scores on their general health issues and were less satisfied with their caregiving role. Parents of female individuals with autism were also significantly more stressed compared to the male individuals with autism and parents of children who received a diagnosis before three years of age, reported fewer behavioral problems with their child compared to the parents who received a diagnosis when the child was older. In this sample, mothers and fathers seem to be similarly impacted by caring for a child with autism, which is contrary to findings from other countries. However, in this region, family bonds between couples and the wider family may have had an influence which further cross-cultural research in low-resource settings could help elucidate, notwithstanding the challenges this poses. The findings have policy implications for health authorities in the KRI to improve the support provided to both mothers and fathers who care for children with autism, which presently is rarely available to them.

PMID:37966533 | DOI:10.1007/s10803-023-06165-6

Int Nurs Rev. 2023 Nov 15. doi: 10.1111/inr.12907. Online ahead of print.

ABSTRACT

AIM: To describe activities and professional characteristics of nurses in expanded roles in acute care in Germany and achieve a greater understanding of the current situation of advanced practice nursing.

BACKGROUND: Advanced practice nursing plays an important role in meeting increased demands in healthcare and promoting high-quality care.

INTRODUCTION: In Germany, advanced practice nursing is still at an early stage with a lack of studies describing the scope of practice of nurses in expanded roles.

METHODS: We conducted a cross-sectional-study using a paper-and-pencil questionnaire. In a nationwide convenience sample, we surveyed nurses with an academic degree, who work in an acute care hospital and take over expanded roles in direct patient care. Reporting followed the STROBE checklist.

RESULTS: Of 108 eligible nurses, 84 (77%) completed the survey. The majority had a Master’s degree (63.1%) and the average work experience was 18.2 years. Participants carried out activities in all the domains that were queried (direct clinical practice, guidance and coaching, consultation, leadership and research) with differences within and between domains. Foci were on direct clinical practice and coaching and guidance.

DISCUSSION: In Germany, qualifications are nearing the international standard of advanced practice nursing. Results suggest that participants partly undertake activities within the scope of registered nurses’ practice that do not correspond fully to their formal qualifications.

CONCLUSION AND IMPLICATIONS FOR NURSING AND/OR HEALTH POLICY: In order to foster the role development of expanded practice nurses in Germany, political efforts are needed in terms of training (e.g. specific Master’s programmes), funding of corresponding positions in practice and control mechanisms (e.g. professional registration).

PMID:37965870 | DOI:10.1111/inr.12907

Chirurgia (Bucur). 2023 Oct;118(5):487-501. doi: 10.21614/chirurgia.2023.v.118.i.5.p.487.

ABSTRACT

Background: Colorectal cancer, 3rd in incidence and 2nd in mortality among cancers worldwide, represents the most common malignant tumor of the digestive tract. In Romania, it is the most frequently diagnosed type of cancer (approximately 0.06% of the population/year). During the COVID-19 pandemic the legislation preventing the SARS-CoV-2 viral transmission impairing access to outpatient healthcare services combined with patients fear of SARS-CoV-2 infection had consequences on the diagnosis and treatment of all other pathologies. Methods: A 5-year retrospective cohort study was conducted in a tertiary hospital in Arad, Romania, and included 1329 newly diagnosed colorectal cancer patients. For statistical analysis, Fisher’s exact test was used for categorical data and the unpaired test with Welch’s correction for continuous data. Results: The age on diagnosis decreased during the early COVID-19 pandemic to 68.50 (95% CI [67.90 69.11]) years, with the highest percentage (7.41%) of early onset colorectal cancer patients, a steady post-pandemic increase in the percentage of male (52.71% in 2019 to 62.20% in 2022) and urban (54.18% in 2018 to 70.10% in 2022) patients, admitted to the hospital due to an emergency presentation (peaking at 83.95% in 2020) and requiring a longer hospitalization period (10.03 [95% CI (8.76-11.30)] days in 2020 to 8.37 [95% CI (7.44-9.30)] days in 2022). The most common colo-rectal cancer diagnosis of patients in our reference population was malignant neoplasm of the rectum (ICD-10 code C20.0), while the most common complications were peritumoral adherence-related disorder, occlusion, and perforation, encountered in patients with comorbidities such as arterial hypertension, ischemic cardiomyopathy, diabetes mellitus, obesity, and non-alcoholic steatohepatitis. Conclusions: Regional particularities should be analyzed to better target the population at risk and to better direct the necessary healthcare resources towards the reference population, especially during crisis periods similar to the COVID-19 pandemic.

PMID:37965833 | DOI:10.21614/chirurgia.2023.v.118.i.5.p.487

Chirurgia (Bucur). 2023 Oct;118(5):445-454. doi: 10.21614/chirurgia.2023.v.118.i.5.p.445.

ABSTRACT

The literature review is a direct consequence of the increased volume of scientific information, becoming a necessity not only for the medical field. Such material, properly done, is of great use to any professional who wishes to keep abreast of the latest knowledge and concepts. The proposed goal is to help and guide resident doctors, doctoral students, and young researchers in understanding the concepts that are the basis of conducting a literature review and acquiring the generally accepted methodology for conducting it. The selection of information sources, accessing databases, the concept of peer-review, indexing and the impact factor are clearly presented as elements that cannot be neglected in the valorisation of scientific information sources. The structure of a literature review must consider the generally accepted format for such an article, with each chapter having its own importance. Depending on the quality and heterogeneity of the results obtained after analysing the collected data, the review can be structured narratively or systematically, the homogeneity of the results allowing the application of statistical study methods (meta-analysis). Although it seems difficult, conducting a literature review is easier and faster than developing an original study based on experimental or clinical scientific research. The literature review can be carried out in comfortable conditions, online, regardless of location and is a welcome support in the development of the professional and scientific career.

PMID:37965829 | DOI:10.21614/chirurgia.2023.v.118.i.5.p.445

Acta Obstet Gynecol Scand. 2023 Nov 15. doi: 10.1111/aogs.14720. Online ahead of print.

ABSTRACT

INTRODUCTION: Birth before arrival is associated with maternal morbidity and neonatal morbidity and mortality. Yet, timely risk stratification remains challenging. Our objective was to identify risk factors for birth before arrival which may be determined at the first antenatal appointment.

MATERIAL AND METHODS: This was an unmatched case-control study involving 37 348 persons who gave birth at a minimum of 22+0 weeks’ gestation over a 5-year period from January 2014 to October 2019 (IRAS project ID 222260; REC reference: 17/SC/0374). The setting was a large UK university hospital. Data obtained on maternal characteristics at booking was examined for association with birth before arrival using a stepwise multivariable logistic regression analysis. Data are presented as adjusted odds ratios with 95% confidence intervals. Area under the receiver-operator characteristic curves (C-statistic) were employed to enable discriminant analysis assessing the risk prediction of the booking data on the outcome.

RESULTS: Multivariable analysis identified significant independent predictors of birth before arrival that were detectable at booking: parity, ethnicity, multiple deprivation, employment status, timing of booking, distance from home to the nearest maternity unit, and safeguarding concerns raised at booking by clinical staff. Our model demonstrated good discrimination for birth before arrival; together, the predictors accounted for 77% of the data variance (95% confidence interval 0.74-0.80).

CONCLUSIONS: Information gathered routinely at booking may discriminate individuals at risk for birth before arrival. Better recognition of early factors may enable maternity staff to direct higher-risk women towards specialized care services at an early point in their pregnancy, enabling time for clinical and social interventions.

PMID:37965812 | DOI:10.1111/aogs.14720

Brief Bioinform. 2023 Sep 22;24(6):bbad395. doi: 10.1093/bib/bbad395.

ABSTRACT

Spatial transcriptomics is a rapidly growing field that aims to comprehensively characterize tissue organization and architecture at single-cell or sub-cellular resolution using spatial information. Such techniques provide a solid foundation for the mechanistic understanding of many biological processes in both health and disease that cannot be obtained using traditional technologies. Several methods have been proposed to decipher the spatial context of spots in tissue using spatial information. However, when spatial information and gene expression profiles are integrated, most methods only consider the local similarity of spatial information. As they do not consider the global semantic structure, spatial domain identification methods encounter poor or over-smoothed clusters. We developed ConSpaS, a novel node representation learning framework that precisely deciphers spatial domains by integrating local and global similarities based on graph autoencoder (GAE) and contrastive learning (CL). The GAE effectively integrates spatial information using local similarity and gene expression profiles, thereby ensuring that cluster assignment is spatially continuous. To improve the characterization of the global similarity of gene expression data, we adopt CL to consider the global semantic information. We propose an augmentation-free mechanism to construct global positive samples and use a semi-easy sampling strategy to define negative samples. We validated ConSpaS on multiple tissue types and technology platforms by comparing it with existing typical methods. The experimental results confirmed that ConSpaS effectively improved the identification accuracy of spatial domains with biologically meaningful spatial patterns, and denoised gene expression data while maintaining the spatial expression pattern. Furthermore, our proposed method better depicted the spatial trajectory by integrating local and global similarities.

PMID:37965808 | DOI:10.1093/bib/bbad395