bluuebunny/crossref_metadata_2025_split huggingface dataset:
Problem behavior in young children referred with language difficulties: Relations to language and intentional communication
Authors: Jansen Rianne , Maljaars Jarymke , Verhappen Anouk , Zink Inge , Steyaert Jean , Noens Ilse 
Published: January 2020

Background and aims This exploratory study aims to examine the relative contribution of language and intentional communication to internalizing and externalizing problem behavior. Methods Twenty-nine Dutch-speaking children (age range 24–46 months) referred with language difficulties participated in this study. For the majority of children, these early language difficulties appeared to be part of a broader neurodevelopmental disorder, mainly autism spectrum disorder. Parent ratings on the Achenbach Child Behavior Checklist 1½–5 were predicted from children’s language level and intentional communicative abilities, the latter being assessed by both parent report and direct observation. In all series of hierarchical regression analyses, chronological age and nonverbal mental age were included as covariates. Results Parents commonly reported withdrawal, emotionally reactive behavior, attention problems, and aggressive behavior. Parent-rated intentional communication was the most important predictor of internalizing problem behavior and played an important role in the prediction of aggressive behavior as well. However, chronological age and/or nonverbal mental age also predicted parent-rated levels of externalizing problem behavior, especially attention problems. Conclusions The relation between language difficulties and problem behavior may be influenced by maturation and children’s ability to communicate intentionally. Implications: Language proficiency should, therefore, be independently assessed from children’s intentional communicative abilities which, in turn, may differ across contexts.
Dose–response characteristics of noninvasive ventilation in acute respiratory failure
Authors: Hukins Craig , Murphy Michelle , Edwards Timothy 
Published: January 2020

Acute noninvasive ventilation (NIV) is a well-established therapy for acute respiratory failure but the dose–response characteristics of this therapy have not been defined. The aim of this study was to define this dose–response relationship.This study was a retrospective review of patients receiving NIV for acute respiratory failure in a tertiary hospital respiratory high-dependency unit between July 2012 and June 2017. Mask-on time (rather than the period that NIV was in use) as the “dose” was compared with hospital survival as the “response”.654 patients were included, 594 (91%) with hypercapnic respiratory failure (HCRF). NIV was used for a median (interquartile range (IQR)) duration of 2.74 (1.51–4.73) days and median (IQR) mask-on time was 34 (18–60) h (56.1% (41.2–69.5%) of treatment time). There was evidence of a dose–response relationship in the HCRF group up to a ceiling of 24 h mask-on time, but not in the hypoxaemic respiratory failure (HRF) group. There was a difference in survival with as little as 2 h mask-on time (92% compared with 73%; p<0.001). Patients requiring NIV for 80–100% of therapy time had lower survival.We conclude that there is evidence of a dose–response relationship between cumulative NIV usage (mask-on time) and survival from as little as 2 h to a ceiling of ∼24 h in HCRF, but not in HRF.
Transparent PAN:TiO2 and PAN-co-PMA:TiO2 Nanofiber Composite Membranes with High Efficiency in Particulate Matter Pollutants Filtration
Authors: Ruan Dongliang , Qin Liming , Chen Rouxi , Xu Guojie , Su Zhibo , Cheng Jianhua , Xie Shilei , Cheng Faliang , Ko Frank 
Published: January 2020

AbstractParticulate matter is one of the main pollutants, causing hazy days, and it has been serious concern for public health worldwide, particularly in China recently. Quality of outdoor atmosphere with a pollutant emission of PM2.5 is hard to be controlled; but the quality of indoor air could be achieved by using fibrous membrane-based air-filtering devices. Herein, we introduce nanofiber membranes for both indoor and outdoor air protection by electrospun synthesized polyacrylonitrile:TiO2 and developed polyacrylonitrile-co-polyacrylate:TiO2 composite nanofiber membranes. In this study, we design both polyacrylonitrile:TiO2 and polyacrylonitrile-co-polyacrylate:TiO2 nanofiber membranes with controlling the nanofiber diameter and membrane thickness and enable strong particulate matter adhesion to increase the absorptive performance and by synthesizing the specific microstructure of different layers of nanofiber membranes. Our study shows that the developed polyacrylonitrile-co-polyacrylate:TiO2 nanofiber membrane achieves highly effective (99.95% removal of PM2.5) under extreme hazy air-quality conditions (PM2.5 mass concentration 1 mg/m3). Moreover, the experimental simulation of the test in 1 cm3 air storehouse shows that the polyacrylonitrile-co-polyacrylate:TiO2 nanofiber membrane (1 g/m2) has the excellent PM 2.5 removal efficiency of 99.99% in 30 min.
RETRACTED ARTICLE: Prognostic value of heart failure in hemodialysis-dependent end-stage renal disease patients with myocardial fibrosis quantification by extracellular volume on cardiac magnetic resonance imaging
Authors: Xu Hua-yan , Yang Zhi-gang , Zhang Yi , Peng Wan-lin , Xia Chun-chao , Li Zhen-lin , He Yong , Xu Rong , Rao Li , Peng Ying , Li Yu-ming , Gao Hong-ling , Guo Ying-kun 
Published: January 2020

AbstractBackgroundEnd-stage renal disease (ESRD) patients are at high cardiovascular risk, and myocardial fibrosis (MF) accounts for most of their cardiac events. The purpose of this study is to investigate the prognostic value and risk stratification of MF as measured by extracellular volume (ECV) on cardiac magnetic resonance (CMR) for heart failure (HF) in patients with hemodialysis-dependent ESRD.MethodsSixty-six hemodialysis ESRD patients and 25 matched healthy volunteers were prospectively enrolled and underwent CMR to quantify multiple parameters of MF by T1 mapping and late gadolinium enhancement (LGE). All ESRD patients were followed up for 11–30 months, and the end-point met the 2016 ESC guidelines for the definition of HF.ResultsOver a median follow-up of 18 months (range 11–30 months), there were 26 (39.39%) guideline-diagnosed HF patients in the entire cohort of ESRD subjects. The native T1 value was elongated, and ECV was enlarged in the HF cohort relative to the non-HF cohort and normal controls (native T1, 1360.10 ± 50.14 ms, 1319.39 ± 55.44 ms and 1276.35 ± 56.56 ms; ECV, 35.42 ± 4.42%, 31.85 ± 3.01% and 26.97 ± 1.87%; all p<0.05). In the cardiac strain analysis, ECV was significantly correlated with global radial strain (GRS) (r = − 0.501,p = 0.009), global circumferential strain (GCS) (r = 0.553,p = 0.005) and global longitudinal strain (GLS) (r = 0.507,p = 0.008) in ESRD patients with HF. Cox proportional hazard regression models revealed that ECV (hazard ratio [HR] = 1.160, 95% confidence interval: 1.022 to 1.318,p = 0.022) was the only independent predictor of HF in ESRD patients. It also had a higher diagnostic accuracy for detecting MF (area under the curve [AUC] = 0.936; 95% confidence interval: 0.864 to 0.976) than native T1 and post T1 (allp ≤ 0.002). Kaplan-Meier analysis revealed that the high-ECV group had a shorter median overall survival time than the low-ECV group (18 months vs. 20 months, log-rankp = 0.046) and that ESRD patients with high ECV were more likely to have HF.ConclusionsMyocardial fibrosis quantification by ECV on CMR T1 mapping was shown to be an independent risk factor of heart failure, providing incremental prognostic value and risk stratification for cardiac events in ESRD patients.Trial registrationChinese Clinical Trial RegistryChiCTR-DND-17012976, 13/12/2017, Retrospectively registered.
A systematic review reporting quality of radiomics research in neuro-oncology: toward clinical utility and quality improvement using high-dimensional imaging features
Authors: Park Ji Eun , Kim Ho Sung , Kim Donghyun , Park Seo Young , Kim Jung Youn , Cho Se Jin , Kim Jeong Hoon 
Published: January 2020

Abstract
Background
To evaluate radiomics analysis in neuro-oncologic studies according to a radiomics quality score (RQS) system to find room for improvement in clinical use.

Methods
Pubmed and Embase were searched up the terms radiomics or radiogenomics and gliomas or glioblastomas until February 2019. From 189 articles, 51 original research articles reporting the diagnostic, prognostic, or predictive utility were selected. The quality of the methodology was evaluated according to the RQS. The adherence rates for the six key domains were evaluated: image protocol and reproducibility, feature reduction and validation, biologic/clinical utility, performance index, a high level of evidence, and open science. Subgroup analyses for journal type (imaging vs. clinical) and biomarker (diagnostic vs. prognostic/predictive) were performed.

Results
The median RQS was 11 out of 36 and adherence rate was 37.1%. Only 29.4% performed external validation. The adherence rate was high for reporting imaging protocol (100%), feature reduction (94.1%), and discrimination statistics (96.1%), but low for conducting test-retest analysis (2%), prospective study (3.9%), demonstrating potential clinical utility (2%), and open science (5.9%). None of the studies conducted a phantom study or cost-effectiveness analysis. Prognostic/predictive studies received higher score than diagnostic studies in comparison to gold standard (P < .001), use of calibration (P = .02), and cut-off analysis (P = .001).

Conclusions
The quality of reporting of radiomics studies in neuro-oncology is currently insufficient. Validation is necessary using external dataset, and improvements need to be made to feature reproducibility, demonstrating clinical utility, pursuits of a higher level of evidence, and open science.
Gender differences in response to war-related trauma and posttraumatic stress disorder – a study among the Congolese refugees in Uganda
Authors: Ainamani Herbert E. , Elbert Thomas , Olema David Kani , Hecker Tobias 
Published: January 2020

Abstract
Background
The wars in the Democratic Republic of Congo have left indelible marks on the mental health and functioning of the Congolese civilians that sought refuge in Uganda. Even though it is clear that civilians who are exposed to potentially traumatizing events in war and conflict areas develop trauma-related mental health problems, scholarly information on gender differences on exposure to different war-related traumatic events, their conditional risks to developing PTSD and whether the cumulative exposure to traumatic events affects men and women differently is still scanty.

Methods
In total, 325 (n = 143 males, n = 182 females) Congolese refugees who lived in Nakivale, a refugee settlement in the Southwestern part of Uganda were interviewed within a year after their arrival. Assessment included exposure to war-related traumatic events, and DSM-IV PTSD symptom severity.

Results
Our main findings were that refugees were highly exposed to war-related traumatic events with experiencing dangerous flight as the most common event for both men (97%) and women (97%). The overall high prevalence of PTSD differed among women (94%) and men (84%). The highest conditional prevalence of PTSD in women was associated with experiencing rape. The dose-response effect differed significantly between men and women with women showing higher PTSD symptom severity when experiencing low and moderate levels of potentially traumatizing event types.

Conclusion
In conflict areas, civilians are highly exposed to different types of war-related traumatic events that expose them to high levels of PTSD symptoms, particularly women. Interventions focused at reducing mental health problems resulting from war should take the context of gender into consideration.
Progression of the smoking epidemic in high-income regions and its effects on male-female survival differences: a cohort-by-age analysis of 17 countries
Authors: Wensink Maarten , Alvarez Jesús-Adrián , Rizzi Silvia , Janssen Fanny , Lindahl-Jacobsen Rune 
Published: January 2020

Abstract
Background
Of all lifestyle behaviours, smoking caused the most deaths in the last century. Because of the time lag between the act of smoking and dying from smoking, and because males generally take up smoking before females do, male and female smoking epidemiology often follows a typical double wave pattern dubbed the ‘smoking epidemic’. How are male and female deaths from this epidemic differentially progressing in high-income regions on a cohort-by-age basis? How have they affected male-female survival differences?

Methods
We used data for the period 1950–2015 from the WHO Mortality Database and the Human Mortality Database on three geographic regions that have progressed most into the smoking epidemic: high-income North America, high-income Europe and high-income Oceania. We examined changes in smoking-attributable mortality fractions as estimated by the Preston-Glei-Wilmoth method by age (ages 50–85) across birth cohorts 1870–1965. We used these to trace sex differences with and without smoking-attributable mortality in period life expectancy between ages 50 and 85.

Results
In all three high-income regions, smoking explained up to 50% of sex differences in period life expectancy between ages 50 and 85 over the study period. These sex differences have declined since at least 1980, driven by smoking-attributable mortality, which tended to decline in males and increase in females overall. Thus, there was a convergence between sexes across recent cohorts. While smoking-attributable mortality was still increasing for older female cohorts, it was declining for females in the more recent cohorts in the US and Europe, as well as for males in all three regions.

Conclusions
The smoking epidemic contributed substantially to the male-female survival gap and to the recent narrowing of that gap in high-income North America, high-income Europe and high-income Oceania. The precipitous decline in smoking-attributable mortality in recent cohorts bodes somewhat hopeful. Yet, smoking-attributable mortality remains high, and therefore cause for concern.
CHD7 gene polymorphisms in female patients with idiopathic scoliosis
Authors: Borysiak Karolina , Janusz Piotr , Andrusiewicz Mirosław , Chmielewska Małgorzata , Kozinoga Mateusz , Kotwicki Tomasz , Kotwicka Małgorzata 
Published: January 2020

Abstract
Background
The CHD7 (chromosome domain helicase DNA binding protein 7) gene has been associated with familial idiopathic scoliosis (IS) in families of European descent. The CHD7 single-nucleotide polymorphisms have never been studied in Polish Caucasian IS patients.

Methods
The aim of this study was to investigate the relationship of CHD7 gene polymorphisms with susceptibility to or progression of IS in Polish Caucasian females. The study group comprised 211 females who underwent clinical, radiological and genetic examination. The study group was analyzed in three subgroups according to: (1) Cobb angle (Cobb angle ≤30° vs. Cobb angle ≥35°), (2) age of diagnosis (adolescent IS vs. early-onset IS) and (3) rate of progression (non-progressive vs. slowly progressive vs. rapidly progressive IS). The control group comprised 83 females with no scoliosis and with a negative family history who underwent clinical and genetic examination. In total six CHD7 gene polymorphisms were examined. Three polymorphisms (rs1017861, rs13248429, and rs4738813) were examined by RFLP (restriction fragment length polymorphism) analysis, and three were quantified by Sanger sequencing (rs78874766, rs4738824, and rs74797613).

Results
In rs13248429, rs78874766, and rs74797613 polymorphisms only the wild allele was present. The rs1017861 polymorphism demonstrated an association with IS susceptibility (p < 0.01). Two polymorphisms, rs1017861 and rs4738813, were associated with curve severity and progression rate (p < 0.05). None of the evaluated polymorphisms in CHD7 gene showed any association with the age of IS onset.

Conclusions
The polymorphism rs1017861 in CHD7 gene showed an association with IS susceptibility. Two polymorphisms (rs1017861 and rs4738813) were associated with curve severity and progression rate. None of the evaluated polymorphisms in CHD7 gene showed any association with the age of IS onset. Further evaluation of CHD7 gene should be considered as IS modifying factor.
Researcher and study participants’ perspectives of consent in clinical studies in four referral hospitals in Vietnam
Authors: Van Nuil Jennifer Ilo , Nguyen Thi Thanh Thuy , Le Nguyen Thanh Nhan , Nguyen Van Vinh Chau , Chambers Mary , Ta Thi Dieu Ngan , Merson Laura , Nguyen Thi Phuong Dung , Hoang Minh Tu Van , Parker Michael , Bull Susan , Kestelyn Evelyne 
Published: January 2020

Abstract
Background
Within the research community, it is generally accepted that consent processes for research should be culturally appropriate and tailored to the context, yet researchers continue to grapple with what valid consent means within specific stakeholder groups. In this study, we explored the consent practices and attitudes regarding essential information required for the consent process within hospital-based trial communities from four referral hospitals in Vietnam.

Methods
We collected surveys from and conducted semi-structured interviews with study physicians, study nurses, ethics committee members, and study participants and family members regarding their experiences of participating in research, their perspectives toward research, and their views about various elements of the consent process.

Results
In our findings, we describe three interrelated themes related to the consent process: (1) words and regulation; (2) reimbursement, suspicions, and joining; and (3) responsibilities. In general, stakeholders had highly varied perspectives of nghiên cứu (Eng.: research) and researchers used varying levels of detail regarding all aspects of the study in the consent process to build trust with and/or promote potential research participants’ choices about taking part in research. Findings additionally highlight how researchers felt that offering financial reimbursements in a hospital setting, where payment for services was routine, would be unfamiliar to participants and could raise suspicions about the research. Participants, however, focused their discussions on reimbursement or alternative reasons for joining the study, such as health related benefits or altruism. Finally, participants often relied on their physician to help them decide about joining a study or not.

Conclusion
Further research is needed to understand how researchers and participants make sense of and practice consent, and how that impacts participants’ decision-making about research participation. To promote valid consent within this context, it is important to engage with hospital-based trial communities as a whole. The data from this study will inform future research on consent, guide the revisions of consent related policies within our research sites and point to several larger issues surrounding researcher-participant expectations, communication, and trust.
Tocilizumab modifies clinical and laboratory features of macrophage activation syndrome complicating systemic juvenile idiopathic arthritis
Authors: Shimizu Masaki , Mizuta Mao , Okamoto Nami , Yasumi Takahiro , Iwata Naomi , Umebayashi Hiroaki , Okura Yuka , Kinjo Noriko , Kubota Tomohiro , Nakagishi Yasuo , Nishimura Kenichi , Mohri Mariko , Yashiro Masato , Yasumura Junko , Wakiguchi Hiroyuki , Mori Masaaki 
Published: January 2020

Abstract
Background
This study aimed to determine the influence of tocilizumab (TCZ) in modifying the clinical and laboratory features of macrophage activation syndrome (MAS) complicating systemic juvenile idiopathic arthritis (s-JIA). Furthermore, we assessed the performance of the 2016 MAS classification criteria for patients with s-JIA-associated MAS while treated with TCZ.

Methods
A panel of 15 pediatric rheumatologists conducted a combination of expert consensus and analysis of real patient data. Clinical and laboratory features of s-JIA-associated MAS in 12 TCZ-treated patients and 18 untreated patients were evaluated. Possible MAS was defined as having characteristic laboratory features but lack of clinical features of MAS, or atypical MAS, or early treatment that prevented full-blown MAS.

Results
Clinically, the TCZ-treated patients with s-JIA-associated MAS were less likely febrile and had significantly lower ferritin, triglyceride, and CRP levels than the untreated patients with s-JIA-associated MAS. Other laboratory features of MAS including lower platelet counts and lower fibrinogen were more pronounced in TCZ-treated patients. The TCZ-treated patients with s-JIA-associated MAS were less likely to be classified as MAS based on the MAS classification criteria (25% vs 83.3%, p < 0.01). This is ascribed to the absence of fever or insufficient ferritin elevation, compared with the untreated patients.

Conclusion
TCZ could modify the clinical and laboratory features of s-JIA-associated MAS. When evaluating the s-JIA patients while treated with TCZ, it is not applicable to use MAS classification criteria. Care must be taken to not underdiagnose MAS based on the MAS classification criteria.
Exploring women and traditional birth attendants’ perceptions and experiences of stillbirths in district Thatta, Sindh, Pakistan: a qualitative study
Authors: Mcnojia Sanam Zulfiqar , Saleem Sarah , Feroz Anam , Khan Kausar S. , Naqvi Farnaz , Tikmani Shiyam Sunder , McClure Elizabeth M. , Siddiqi Sameen , Goldenberg Robert L. 
Published: January 2020

Abstract
Background
Pakistan reports the highest stillbirth rate in the world at 43 per thousand births with more than three-quarters occurring in rural areas. The Global Network for Women’s and Children’s Health maintains a Maternal and Newborn Health Registry (MNHR) in 14 study clusters of district Thatta, Sindh Pakistan. For the last 10 years, the MNHR has recorded a high stillbirths rate with a slow decline. This exploratory study was designed to understand the perspectives of women and traditional birth attendants regarding the high occurrence of stillbirth in Thatta district.

Methods
We used an exploratory qualitative study design by conducting in-depth interviews (IDIs) and focus group discussions (FGDs) using semi-structured interview guide with rural women (FGDs = 4; n = 29) and traditional birth attendants (FGDs = 4; n = 14) who were permanent residents of Thatta. In addition, in-depth interviews were conducted with women who had experienced a stillbirth (IDIs = 4). This study presents perceptions and experiences of women and TBAs regarding high rate of stillbirth in Thatta district, Karachi.

Results
Women showed reluctance to receive skilled/ standard care when in need due to apprehensions towards operative delivery, poor attitude of skilled health care providers, and poor quality of care as service delivery factors. High cost of care, far distance to facility, lack of transport and need of an escort from the family or village to visit a health facility were additional important factors for not seeking care resulting in stillbirth. The easy availability of unskilled provider in the form of traditional birth attendant is then preferred over a skilled health care provider. TBAs shared their husband or family members restrict them to visit or consult a doctor during pregnancy. According to TBAs after delivering a macerated fetus, women are given herbs to remove infection from woman‘s body and uterus. Further women are advised to conceive soon so that they get rid of infections.

Conclusion
Women of this rural community carry lots of apprehension against skilled medical care and as a result follow traditional practices. Conscious efforts are required to increase the awareness of women to develop positive health seeking behavior during pregnancy, delivery and the post-partum period. Alongside, provision of respectful maternity care needs to be emphasized especially at public health facilities.