bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increasing questionnaire response: evidence from a nested RCT within a longitudinal birth cohort study
Authors: Goodwin Michaela , Walsh Tanya , Whittaker William , Emsley Richard , Sutton Matt , Tickle Martin , Kelly Michael P. , Pretty Iain A. 
Published: June 2020

Abstract
Background
High response rates are essential when questionnaires are used within research, as representativeness can affect the validity of studies and the ability to generalise the findings to a wider population.
The study aimed to measure the response rate to questionnaires from a large longitudinal epidemiological study and sought to determine if any changes made throughout data collection had a positive impact on the response to questionnaires and addressed any imbalance in response rates by participants’ levels of deprivation.

Methods
Data were taken from a prospective, comparative study, designed to examine the effects of the reintroduction of water fluoridation on children’s oral health over a five-year period. Response rates were analysed for the first year of data collection. During this year changes were made to the questionnaire layout and cover letter to attempt to increase response rates. Additionally a nested randomised control trial compared the effect on response rates of three different reminders to complete questionnaires.

Results
Data were available for 1824 individuals. Sending the complete questionnaire again to non-responders resulted in the highest level of response (25%). A telephone call to participants was the only method that appeared to address the imbalance in deprivation, with a mean difference in deprivation score of 2.65 (95% CI -15.50 to 10.20) between the responders and non-responders.

Conclusions
Initially, low response rates were recorded within this large, longitudinal study giving rise to concerns about non-response bias. Resending the entire questionnaire again was the most effective way of reminding participants to complete the questionnaire. As this is a less labour intensive method than for example, calling participants, more time can then be spent targeting groups who are underrepresented. In order to address these biases, data can be weighted in order to draw conclusions about the population.
Research methodology and characteristics of journal articles with original data, preprint articles and registered clinical trial protocols about COVID-19
Authors: Fidahic Mahir , Nujic Danijela , Runjic Renata , Civljak Marta , Markotic Filipa , Lovric Makaric Zvjezdana , Puljak Livia 
Published: June 2020

Abstract
Background
The research community reacted rapidly to the emergence of COVID-19. We aimed to assess characteristics of journal articles, preprint articles, and registered trial protocols about COVID-19 and its causal agent SARS-CoV-2.

Methods
We analyzed characteristics of journal articles with original data indexed by March 19, 2020, in World Health Organization (WHO) COVID-19 collection, articles published on preprint servers medRxiv and bioRxiv by April 3, 2010. Additionally, we assessed characteristics of clinical trials indexed in the WHO International Clinical Trials Registry Platform (WHO ICTRP) by April 7, 2020.

Results
Among the first 2118 articles on COVID-19 published in scholarly journals, 533 (25%) contained original data. The majority was published by authors from China (75%) and funded by Chinese sponsors (75%); a quarter was published in the Chinese language. Among 312 articles that self-reported study design, the most frequent were retrospective studies (N = 88; 28%) and case reports (N = 86; 28%), analyzing patients’ characteristics (38%). Median Journal Impact Factor of journals where articles were published was 5.099.
Among 1088 analyzed preprint articles, the majority came from authors affiliated in China (51%) and were funded by sources in China (46%). Less than half reported study design; the majority were modeling studies (62%), and analyzed transmission/risk/prevalence (43%).
Of the 927 analyzed registered trials, the majority were interventional (58%). Half were already recruiting participants. The location for the conduct of the trial in the majority was China (N = 522; 63%). The median number of planned participants was 140 (range: 1 to 15,000,000). Registered intervention trials used highly heterogeneous primary outcomes and tested highly heterogeneous interventions; the most frequently studied interventions were hydroxychloroquine (N = 39; 7.2%) and chloroquine (N = 16; 3%).

Conclusions
Early articles on COVID-19 were predominantly retrospective case reports and modeling studies. The diversity of outcomes used in intervention trial protocols indicates the urgent need for defining a core outcome set for COVID-19 research. Chinese scholars had a head start in reporting about the new disease, but publishing articles in Chinese may limit their global reach. Mapping publications with original data can help finding gaps that will help us respond better to the new public health emergency.
Spatio-temporal analysis of socio-economic characteristics for pulmonary tuberculosis in Sichuan province of China, 2006–2015
Authors: Xia Lan , Zhu Sui , Chen Chuang , Rao Zheng-Yuan , Xia Yong , Wang Dan-Xia , Zhang Pei-Ru , He Jinge , Zhang Ju-Ying , Wu Jian-Lin 
Published: June 2020

AbstractBackgroundThe disease burden caused by pulmonary tuberculosis (TB) in Sichuan province still persisted at a high level, and large spatial variances were presented across regional distribution disparities. The socio-economic factors were suspected to affect the population of TB notification, we aimed to describe TB case notification rate (CNR) and identify which factors influence TB epidemic are necessary for the prevention and control of the disease in Sichuan province.MethodsA retrospective cross-sectional study and an ecological spatial analysis was conducted to quantify the presence and location of spatial clusters of TB by the Moran’sIindex and examined these patterns with socio-economic risk factors by hierarchical Bayesian spatio-temporal model.ResultsA total of 630,009 pulmonary TB cases were notified from 2006 to 2015 in 181 counties of Sichuan province. The CNR decreased year by year since 2007, from 88.70 to 61.37 per 100,000 persons. The spatial heterogeneities of CNR were observed during the study periods. Global Moran’sIindex varied from 0.23 to 0.44 with allP-value < 0.001. The Bayesian spatio-temporal model with parametric spatio-temporal interactions was chosen as the best model according to the minimum of Deviance Information Criterion (DIC)(19,379.01), and in which the quadratic form of time was taken. The proportion of age group and education year were all associated with CNR after adjusting the spatial effect, temporal effect and spatio-temporal interactions. TB CNR increased by 10.2% [95% credible interval (CI): 6.7–13.7%] for every 1-standard-deviation increase in proportion of age group and decreased by 23% (95%CI: 13.7–32.7%) for every 1-standard-deviation increase in education year.ConclusionsThere were spatial clusters of TB notification rate in Sichuan province from 2006 to 2015, and heavy TB burden was mainly attributed to aging and low socioeconomic status including poor education. Thus, it is more important to pay more attention to the elderly population and improve socioeconomic status including promoting education level in Sichuan province to reduce the TB burden.
Fungal arthritis with adjacent osteomyelitis caused by Candida pelliculosa: a case report
Authors: Song Kwang Yun , Park Chulmin , Byun Ji-Hyun , Chun Hye-Sun , Choi Jung-Hyun , Han Eun Hee , Lee Seung Ok , Jeong Yeonjeong , Kim Youn Jeong , Kim Si-Hyun 
Published: June 2020

AbstractBackgroundCandidasp. osteoarticular infection is rare and most often due to hematogenous seeding during an episode of candidemia in immunocompromised patients. However, the diagnosis can be delayed in patients with subtle symptoms and signs of joint infection without a concurrent episode of candidemia.Case presentationA 75-year-old woman presented with a three-year history of pain and swelling of the left knee.Candida pelliculosawas detected from the intraoperative tissue when the patient had undergone left total knee arthroplasty 32 months ago, but no antifungal treatment was performed. One year after the total knee arthroplasty,C. pelliculosawas repeatedly isolated from the left knee synovial fluid and antifungal treatment comprising amphotericin B deoxycholate and fluconazole was administered. However, joint infection had extended to the adjacent bone and led to progressive joint destruction. The patient underwent surgery for prosthesis removal and received prolonged antifungal treatment with micafungin and fluconazole.ConclusionsThis case shows thatC. pelliculosa, an extremely rare non-Candida albicans sp.,can cause fungal arthritis and lead to irreversible joint destruction owing to delayed diagnosis and treatment.
Twelve months of exercise training did not halt abdominal aortic calcification in patients with CKD – a sub-study of RENEXC-a randomized controlled trial
Authors: Zhou Yunan , Hellberg Matthias , Hellmark Thomas , Höglund Peter , Clyne Naomi 
Published: June 2020

Abstract
Background
Arteriosclerosis is prevalent in patients with chronic kidney disease (CKD). Our aims were to investigate (1) the effects of 12 months of either balance- or strength- both in combination with endurance training on abdominal aortic calcification (AAC); on some lipids and calcific- and inflammatory markers; and (2) the relationships between the change in AAC score and these markers in non-dialysis dependent patients with CKD stages 3 to 5.

Methods
One hundred twelve patients (mean age 67 ± 13 years), who completed 12 months of exercise training; comprising either balance- or strength training, both in combination with endurance training; with a measured glomerular filtration rate (mGFR) 22.6 ± 8 mL/min/1.73m2, were included in this study. AAC was evaluated with lateral lumbar X-ray using the scoring system described by Kauppila. Plasma fetuin-A, fibroblast growth factor 23 (FGF23) and interleukin 6 (IL6) were measured with Enzyme-linked immunosorbent assay (ELISA) kits.

Results
After 12 months of exercise training, the AAC score increased significantly in both groups; mGFR and lipoprotein (a) decreased significantly in both groups; parathyroid hormone (PTH) and 1,25(OH)2D3 increased significantly only in the strength group; fetuin-A increased significantly only in the balance group. Plasma triglycerides, total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, FGF23, phosphate, calcium, IL6, C-reactive protein (CRP), albumin were unchanged. The increase in AAC score was positively related to ageing and the levels of baseline triglycerides and lipoprotein (a).

Conclusions
Exercise training did not prevent the progression of AAC; it might have contributed to the reduced levels of lipoprotein (a) and unchanged levels of calcific- and inflammatory markers in these patients with non-dialysis dependent CKD. Hypertriglyceridemia, high levels of lipoprotein (a) and ageing emerged as longitudinal predictors of vascular calcification in these patients.

Trial registration
NCT02041156 at www.ClinicalTrials.gov. Date of registration: January 20, 2014. Retrospectively registered.
Making therapies culturally relevant: translation, cultural adaptation and field-testing of the Thinking Healthy Programme for perinatal depression in China
Authors: Nisar Anum , Yin Juan , Yiping Nan , Lanting Huo , Zhang Jingjun , Wang Duolao , Rahman Atif , Li Xiaomei 
Published: June 2020

Abstract
Background
The prevalence of perinatal depression in China ranges from 15 to 20% and the vast majority of prenatally depressed women do not receive the intervention they require. Recent research evidence shows that evidence based, culturally–adapted psychosocial interventions are effective in reducing mental health problems. The World Health Organization (WHO) has endorsed the Thinking Healthy Programme (THP), which is an evidence based psychosocial intervention that can be delivered by non-mental health specialists. The aim of this study was to translate and adapt THP for the Chinese population and to establish its acceptability when delivered by non-specialists to a group of mothers with perinatal depression.

Methods
The study was conducted in two phases. The THP manual, handbook, and health calendar was translated and adapted based on 8 domains of the Bernal framework (language, metaphors, content, concepts, goals, context, people and methods). Pre-testing was done using cognitive interviewing in the first phase. In second phase of field-testing, THP sessions were delivered to the depressed women by local THP trained nurses. Post intervention, programme survey was used for evaluation.

Results
This study showed that the core structure, process and techniques of the THP were culturally compatible with the target Chinese population and did not require major changes. It was found that the adapted version of THP manual, handbook, and health calendar were acceptable, understandable, and culturally relevant to the Chinese women and their family members. Nurses were found as a suitable delivery agent by the mothers and their families.

Conclusion
The Thinking Healthy Programme is acceptable and transferable to the Chinese cultural and healthcare context and nurses are a suitable delivery agent. The translated and adapted version of THP can be used for further implementation and evaluation studies in the Chinese context. Further evaluation can help establish the effectiveness of the programme and barriers to scale-up in China.
Unlocking community capabilities for addressing social norms/practices: behavioural change intervention study to improve birth preparedness and complication readiness among pregnant women in rural Nigeria
Authors: Eze Irene Ifeyinwa , Mbachu Chinyere Ojiugo , Ossai Edmund Ndudi , Nweze Celestina Adaeze , Uneke Chigozie Jesse 
Published: June 2020

AbstractBackgroundMaternal mortality is attributed to combination of contextual factors that cause delay in seeking care, leading to poor utilization of skilled health services. Community participation is one of the acknowledged strategies to improve health services utilization amongst the poor and rural communities. The study aimed at assessing the potentials of improving birth preparedness and complication readiness (BP/CR) using community-driven behavioural change intervention among pregnant women in rural Nigeria.MethodsA pre-post intervention study was conducted from June 2018 to October 2019 on 158 pregnant women selected through multi-stage sampling technique from 10 villages. Data on knowledge and practices of birth preparedness and utilization of facility health services were collected through interviewer-administered pre-tested structured questionnaire. Behavioural change intervention comprising of stakeholders’ engagement, health education, facilitation of emergency transport and fund saving system, and distribution of educational leaflets/posters were delivered by twenty trained volunteer community health workers. The intervention activities focused on sensitization on danger signs of pregnancy, birth preparedness and complication readiness practices and emergency response. Means, standard deviations, and percentages were calculated for descriptive statistics; and T-test and Chi square statistical tests were carried out to determine associations between variables. Statistical significance was set atp-value < 0.05.ResultsThe result showed that after the intervention, mean knowledge score of danger signs of pregnancy increased by 0.37 from baseline value of 3.94 (p < 0.001), and BP/CR elements increased by 0.27 from baseline value of 4.00 (p < 0.001). Mean score for BP/CR practices increased significantly by 0.22 for saving money. The proportion that had antenatal care (76.6%) and had facility delivery (60.0%) increased significantly by 8.2 and 8.3% respectively. Participation in Community-related BP/CR activities increased by 11.6% (p = 0.012).ConclusionWith the improvements recorded in the community-participatory intervention, birth preparedness and complication readiness should be promoted through community, household and male-partner inclusive strategies. Further evaluation will be required to ascertain the sustainability and impact of the programme.
Amplification of KRAS and its heterogeneity in non-Asian gastric adenocarcinomas
Authors: Rehkaemper Jan , Korenkov Michael , Quaas Alexander , Rueschoff Josef , Pamuk Aylin , Zander Thomas , Hillmer Axel M. , Buettner Reinhard , Hoelscher Arnulf Heinrich , Bruns Christiane Josephine , Loeser Heike , Alakus Hakan , Schoemig-Markiefka Birgid 
Published: June 2020

Abstract
Background
Gastric cancer is one of the deadliest cancer entities worldwide. While surgery is the only curative treatment option in early tumors, for locally advanced and metastatic patients further therapeutic targets are needed. Several studies not only reported mutations but also amplifications of the KRAS locus in different cancer entities. More recently, KRAS amplification was discussed as a new therapeutic target. Little is known about the (prognostic) relevance and (heterogenic) distribution of KRAS amplification in gastric adenocarcinomas, especially in Non-Asian patients.

Methods
Amplification of the KRAS locus and corresponding protein expression was analyzed in 582 gastric adenocarcinomas employing fluorescence in-situ hybridization (FISH) and immunohistochemistry. Amplification status was correlated with clinico-pathological features, clinical outcome and molecular tumor data including a correlation to the TCGA subtypes of gastric carcinoma.

Results
KRAS amplification was detected in 27 out of 470 analysable tumors (5.7%) and correlated with protein expression of KRAS in all amplified tumors. Within the KRAS amplified gastric tumors 14/27 (51.9%) showed a heterogeneous distribution with also KRAS non-amplified tumor parts. According to TCGA 24 tumors (88.8%) were related to chromosomal instable tumors (CIN). The survival analysis of the entire patient cohort did not show any difference in overall survival in dependence on the KRAS status. However, a significant survival difference with a worse outcome for patients with KRAS amplified tumors was identified when analysing patients without neoadjuvant pre-treatment.

Conclusions
We confirm the unfavorable prognosis of KRAS amplified tumors reported by other studies in (Asian) patient groups, at least in patients without neoadjuvant pre-treatment. Within KRAS amplified tumors we revealed intratumoral heterogeneity that may define a (more aggressive) tumor cell population which is more frequently observed in patients with lymph node metastases. Despite the heterogeneous distribution of KRAS amplified tumor clones, KRAS amplified locally advanced or metastasized gastric adenocarcinomas represent a therapeutically highly relevant tumor subgroup.
A severe presentation of chronic non-infectious osteomyelitis associated with ulcerative colitis: a case report
Authors: Lorenze Alyssa , Meadows Lukas , Kehinde Temitope , Menchini Cortney Ballengee 
Published: June 2020

Abstract
Background
Chronic Non-Infectious Osteomyelitis (CNO) is a chronic, relapsing, self-limiting inflammation of the bone. Although it is rare, CNO has been associated with inflammatory bowel disease and frequently precedes the initial diagnosis. We present a case of CNO in a patient with known ulcerative colitis in clinical remission who presented with purulent multifocal joint effusions in the setting of elevated inflammatory markers and fever suspicious for bacterial osteomyelitis.

Case presentation
Our patient is a 12-year-old girl with ulcerative colitis who presented with fevers and insidious onset of joint pain at multiple sites. She had multiple joint effusions on imaging and blood and joint cultures were negative. Biopsy of the left acromion demonstrated acute and chronic osteomyelitis with areas of necrosis and granulomatous inflammation suggestive of CNO. Patient was started on high dose corticosteroids as well as methotrexate injections with marked improvement in symptoms.

Conclusion
This case highlights that while purulent effusions are often indicative of bacterial osteomyelitis, the consideration of CNO in a patient with inflammatory bowel disease (IBD) with multifocal small bone involvement and negative blood cultures should be considered.
The impact of sleep deprivation and alcohol on driving: a comparative study
Authors: Lowrie Joanna , Brownlow Helen 
Published: June 2020

Abstract
Background
There is concern about the detrimental effects of shift-workers’ increasing working hours particularly when driving sleep deprived. The approach to measuring the magnitude of driving impairment caused by sleep deprivation was by comparing it to alcohol. The study compared driving performance after 24-h of wakefulness to performance with a BrAC of just over 22 μg/100mls of breath which is equal to 50 mg of alcohol per 100mls of blood (Scottish drink-drive limit). The effectiveness of coffee as a countermeasure for driver fatigue and the association between subjective impairment and actual performance was also investigated.

Methods
A study of 30 participants (11 male and 19 female; mean age 21) was conducted. Subjects were tested under three conditions: fully rested, sleep deprived, and alcohol intoxicated – BrAC mean [SD] 25.95 μg [2.78]. Under each condition, subjects were tested before and after coffee ingestion. This involved driving simulation (Lane Change Task and Reaction Test) and subjective Likert scales (Karolinska Sleepiness Scale and driver impairment scale). Outcome measures included lane tracking adaptive mean deviation, reaction time, and subjective sleepiness and impairment ratings.

Results
Compared to alcohol, sleep deprived mean reaction times were slower (2.86 s vs. 2.34 s) and lateral control of the vehicle was reduced (lane tracking adaptive mean deviation: 0.5 vs. 0.3). Coffee did not produce an improvement when sleep deprived, and instead, performance deteriorated. Females were less impaired following sleep deprivation than males. Following prolonged wakefulness, the correlation between subjective impairment and actual performance was significant.

Conclusions
It was concluded that sleep deprivation has a greater impact on driving performance than a BrAC of 22 μg/100mls of breath, as measured by driving simulation. Coffee is not an effective countermeasure for sleep deprived driving and drivers’ ability to judge this impairment is suggested to be limited.