bluuebunny/crossref_metadata_2025_split huggingface dataset:
Power sources among district health managers in Ghana: a qualitative study
Authors: Bawontuo Vitalis , Adomah-Afari Augustine , Atinga Roger A. , Kuupiel Desmond , Agyepong Irene Akua 
Published: April 2022

AbstractBackgroundIn Ghana district directors of health services and district hospital medical superintendents provide leadership and management within district health systems. A healthy relationship among these managers is dependent on the clarity of formal and informal rules governing their routine duties. These rules translate into the power structures within which district health managers operate. However, detailed nuanced studies of power sources among district health managers are scarce. This paper explores how, why and from where district health directors and medical superintendents derive power in their routine functions.MethodsA multiple case study was conducted in three districts; Bongo, Kintampo North and Juaboso. In each case study site, a cross-sectional design was used to explore the research question. Purposive sampling technique was used to select study sites and 61 participants for interview and focus group discussion. A total of 11 interviews (3 in each district and 2 with deputy regional directors), and 9 focus group discussions (3 in each district) were conducted. Transcriptions of the voice-recordings were done verbatim, cleaned and imported into the Nvivo version 11 software for analysis using the inductive content analysis approach.ResultsThe findings revealed that legitimacy provides formal power source for district health managers since they are formally appointed by the Director General of the Ghana Health Service after going through the appointment processes. These appointments serve as the primary power source for district health managers based on the existing legal and policy framework of the Ghana Health Service. Additionally, resource control especially finances and medical dominance are major informal sources of power that district health managers often employ for the management and administration of their functional areas in the health districts.ConclusionsThe study concludes that district health managers derive powers primarily from their positions within the hierarchical structure (legitimacy) of the district health system. Secondary sources of power stems from resource control (medical dominance and financial dominance), and these power sources inform the way district health managers relate to each other. This paper recommends that district health managers are oriented to understand the power dynamics in the district health system.
Association between stress hyperglycemia ratio and delirium in older hospitalized patients: a cohort study
Authors: Song Quhong , Dai Miao , Zhao Yanli , Lin Taiping , Huang Li , Yue Jirong 
Published: April 2022

Abstract
Background
It remains unclear whether stress hyperglycemia is associated with delirium. We performed this cohort study to determine the association between stress hyperglycemia and delirium.

Methods
We consecutively enrolled patients aged ≥70 years who were admitted to the Geriatric Department of West China Hospital between March 2016 and July 2017. Stress hyperglycemia ratio (SHR) was calculated as fasting blood glucose divided by estimated average glucose derived from glycosylated hemoglobin (HbA1c) and was classified into three tertiles. Delirium was screened within 24 h of admission and three times daily thereafter, using the confusion assessment method. The Cox proportional hazards models were used to assess the association of SHR with delirium.

Results
Among 487 included patients (mean age 83.0 years, 72.0% male), 50 (10.3%) patients experienced delirium during hospitalization. Compared to the second tertile, both the lowest and the highest SHR tertiles were independently associated with delirium (hazard ratio [HR] 3.71, 95% confidence interval [CI] 1.45-9.51; and HR 2.97, 95% CI 1.29-6.81, respectively). Similar results were found after further adjusting for statin comedication. Multiple-adjusted restricted cubic splines revealed a nonlinear relationship between SHR and delirium (Pnonlinearity=0.04). Adding SHR to conventional risk factors improved the risk prediction of delirium (net reclassification index 0.39, P=0.01; integrated discrimination improvement 0.07, P=0.03). Subgroup analyses indicated that the relationship between SHR and delirium was more apparent in patients with HbA1c <6.5%, with significantly higher HR in the first (3.65, 95% CI 1.11-11.97) and third (3.13, 95% CI 1.13-8.72) SHR tertiles compared to the second tertile, while there was no significant association between SHR and delirium in those with HbA1c ≥6.5%.

Conclusions
Both lower and higher SHR were associated with increased risk of delirium but only in patients with HbA1c <6.5%. Admission SHR may serve as a promising predictor of delirium, and incorporating this biomarker into prediction algorithms might have potential clinical utility in aiding delirium risk stratification, especially in those with HbA1c <6.5%.
Social relations and health in older people in Spain using SHARE survey data
Authors: Silberman-Beltramella Mariela , Ayala Alba , Rodríguez-Blázquez Carmen , Forjaz Maria João 
Published: April 2022

Abstract
Introduction
Social relationships (SR) are an important aspect in the healthy ageing process. The study aimed to describe SR in over-50s in Spain and analyse their association with physical/emotional, functional and cognitive/sensory health variables.

Methods
The study sample was formed by 5583 people representing the Spanish population aged 50 and over, who participated in the sixth wave of the Survey of Health, Ageing and Retirement in Europe (SHARE). The variables were divided into socio-demographic aspects and economic, health and SR aspects represented by the number of friends, family members and satisfaction with social network and the Revised UCLA loneliness scale. The health variables were grouped using a main component analysis. Multiple linear regressions were performed between the health components with socio-demographic and SR variables.

Results
67.26% of respondents said they did not feel lonely. The feeling of loneliness was the variable most closely related to the physical and emotional, functional and cognitive and sensory health components. The main SR variable associated to health components was the Revised UCLA Loneliness Scale (standardised beta, p < 0.001; p < 0.001; and p < 0.001, respectively). The number of family members in social network SR variable was also associated with the physical/emotional health (β = 0.09, p < 0.001) and cognitive/sensory ability (β = 0.10, p = 0.001) components.

Conclusions
The main SR aspect that impacts health status was loneliness. The results of this study suggest the importance of developing public health policies oriented to promoting action on the SR characteristics that enhance older people’s health.
Hot-spots of HIV infection in Cameroon: a spatial analysis based on Demographic and Health Surveys data
Authors: Sandie Arsène Brunelle , Tchatchueng Mbougua Jules Brice , Nlend Anne Esther Njom , Thiam Sokhna , Nono Betrand Fesuh , Fall Ndèye Awa , Senghor Diarra Bousso , Sylla El Hadji Malick , Faye Cheikh Mbacké 
Published: April 2022

Abstract
Background
The Human Immunodeficiency Virus(HIV) infection prevalence in Cameroon has decreased from $$5.28\%$$

5.28
%

in 2004 to $$2.8\%$$

2.8
%

in 2018. However, this decrease in prevalence does not show disparities especially in terms of spatial or geographical pattern. Efficient control and fight against HIV infection may require targeting hotspot areas. This study aims at presenting a cartography of HIV infection situation in Cameroon using the 2004, 2011 and 2018 Demographic and Health Survey data, and investigating whether there exist spatial patterns of the disease, may help to detect hot-spots.

Methods
HIV biomarkers data and Global Positioning System (GPS) location data were obtained from the Cameroon 2004, 2011, and 2018 Demographic and Health Survey (DHS) after an approved request from the MEASURES Demographic and Health Survey Program. HIV prevalence was estimated for each sampled area. The Moran’s I (MI) test was used to assess spatial autocorrelation. Spatial interpolation was further performed to estimate the prevalence in all surface points. Hot-spots were identified based on Getis–Ord (Gi*) spatial statistics. Data analyses were done in the R software(version 4.1.2), while Arcgis Pro software tools’ were used for all spatial analyses.

Results
Generally, spatial autocorrelation of HIV infection in Cameroon was observed across the three time periods of 2004 ($$MI=0.84$$

M
I
=
0.84

, $$p-value < 0.001$$

p
-
v
a
l
u
e
<
0.001

), 2011 ($$MI=0.80$$

M
I
=
0.80

, $$p-value < 0.001$$

p
-
v
a
l
u
e
<
0.001

) and 2018 ($$MI=0.87$$

M
I
=
0.87

, $$p-value < 0.001$$

p
-
v
a
l
u
e
<
0.001

). Subdivisions in which one could find persistent hot-spots for at least two periods including the last period 2018 included: Mbéré, Lom et Djerem, Kadey, Boumba et Ngoko, Haute Sanaga, Nyong et Mfoumou, Nyong et So’o Haut Nyong, Dja et Lobo, Mvila, Vallée du Ntem, Océan, Nyong et Kellé, Sanaga Maritime, Menchum, Dounga Mantung, Boyo, Mezam and Momo. However, Faro et Déo emerged only in 2018 as a subdivision with HIV infection hot-spots.

Conclusion
Despite the decrease in HIV epidemiology in Cameroon, this study has shown that there are spatial patterns for HIV infection in Cameroon and possible hot-spots have been identified. In its effort to eliminate HIV infection by 2030 in Cameroon, the public health policies may consider these detected HIV hot-spots, while maintaining effective control in other parts of the country.
Verbal fluency as a quick and simple tool to help in deciding when to refer patients with a possible brain tumour
Authors: Zienius Karolis , Ozawa Mio , Hamilton Willie , Hollingworth Will , Weller David , Porteous Lorna , Ben-Shlomo Yoav , Grant Robin , Brennan Paul M. 
Published: April 2022

Abstract
Background
Patients with brain tumours often present with non-specific symptoms. Correctly identifying who to prioritise for urgent brain imaging is challenging. Brain tumours are amongst the commonest cancers diagnosed as an emergency presentation. A verbal fluency task (VFT) is a rapid triage test affected by disorders of executive function, language and processing speed. We tested whether a VFT could support identification of patients with a brain tumour.

Methods
This proof-of-concept study examined whether a VFT can help differentiate patients with a brain tumour from those with similar symptoms (i.e. headache) without a brain tumour. Two patient populations were recruited, (a) patients with known brain tumour, and (b) patients with headache referred for Direct-Access Computed-Tomography (DACT) from primary care with a suspicion of a brain tumour. Semantic and phonemic verbal fluency data were collected prospectively.

Results
180 brain tumour patients and 90 DACT patients were recruited. Semantic verbal fluency score was significantly worse for patients with a brain tumour than those without (P  <  0.001), whether comparing patients with headache, or patients without headache. Phonemic fluency showed a similar but weaker difference. Raw and incidence-weighted positive and negative predictive values were calculated.

Conclusion
We have demonstrated the potential role of adding semantic VFT score performance into clinical decision making to support triage of patients for urgent brain imaging. A relatively small improvement in the true positive rate in patients referred for DACT has the potential to increase the timeliness and efficiency of diagnosis and improve patient outcomes.
Impact of post-COVID conditions on mental health: a cross-sectional study in Japan and Sweden
Authors: Matsumoto Kazuki , Hamatani Sayo , Shimizu Eiji , Käll Anton , Andersson Gerhard 
Published: April 2022

Abstract
Background
Due to the coronavirus disease 2019 (COVID-19) pandemic, people have undermined their mental health. It has been reported that post-COVID conditions at a certain rate. However, information on the mental health of people with post-COVID conditions is limited. Thus, this study investigated the relationship between post-COVID conditions and mental health.

Methods
Design of the present study was an International and collaborative cross-sectional study in Japan and Sweden from March 18 to June 15, 2021. The analyzed data included 763 adults who participated in online surveys in Japan and Sweden and submitted complete data. In addition to demographic data including terms related to COVID-19, psychiatric symptoms such as depression, anxiety, and post-traumatic stress were measured by using the fear of COVID-19 scale (FCV-19S), Patient Health Questionnaire-9 (PHQ-9), General Anxiety Disorder-7 item (GAD-7), and Impact of Event Scale-Revised (IES-R).

Results
Of the 135 COVID-19 survivors among the 763 total participants, 37.0% (n = 50/135) had COVID-19-related sequelae. First, the results of the Bonferroni-corrected Mann Whitney U test showed that the group infected SARS-CoV-2 with post-COVID conditions scored significantly higher than those without one and the non-infected group on all clinical symptom scales (P ≤ .05). Next, there was a significant difference that incidence rates of clinical-significant psychiatric symptoms among each group from the results of the Chi-squared test (P ≤ .001). Finally, the results of the multivariate logistic model revealed that the risk of having more severe clinical symptoms were 2.44–3.48 times higher among participants with post-COVID conditions.

Conclusion
The results showed that approximately half had some physical symptoms after COVID-19 and that post-COVID conditions may lead to the onset of mental disorders.

Trial registration
The ethics committee of Chiba University approved this cross-sectional study (approval number: 4129). However, as no medical intervention was conducted, a clinical trial registration was not necessary.
Sex differences in the experience of COVID-19 post-traumatic stress symptoms by adults in South Africa
Authors: Nzimande Ntombifuthi P. , El Tantawi Maha , Zuñiga Roberto Ariel Abeldaño , Opoku-Sarkodie Richmond , Brown Brandon , Ezechi Oliver C. , Uzochukwu Benjamin S. C. , Ellakany Passent , Aly Nourhan M. , Nguyen Annie Lu , Folayan Morenike Oluwatoyin 
Published: April 2022

Abstract
Background
The COVID-19 pandemic has created multiple mental health challenges. Many residents in South Africa face pre-existing elevated levels of stress and the pandemic may have had varying impacts on sub-populations. The aims of this study were to determine: 1) the factors associated with post-traumatic stress symptoms (PTSS) and 2) sex differences in the factors associated with PTSS in adults residing in South Africa during the COVID-19 pandemic.

Methods
Study participants aged 18 years and above, were recruited for this cross-sectional study through an online survey implemented from June 29, 2020 to December 31, 2020. The outcome variable was PTSS; explanatory variables were sex at birth, COVID-19 status, social isolation and access to emotional support. Confounders considered were age, education level completed and current work status. Logistic regressions were used to determine the association between the outcome and explanatory variables after adjusting for confounders.

Outcomes
There were 489 respondents. Among all respondents, those who were older (AOR: 0.97; 95% CI: 0.95 – 0.99) and had access to emotional support from family and relatives (AOR: 0.27; 95% CI: 0.14 – 0.53) had significantly lower odds of PTSS. Respondents who felt socially isolated had higher odds of PTSS (AOR: 1.17; 95% CI: 1.08 – 1.27). Females had higher PTSS scores and higher odds of PTSS compared to males (AOR: 2.18; 95% CI: 1.41-3.39). Females (AOR: 0.27; 95% CI: 0.08 – 0.95) and males (AOR: 0.26; 95% CI: 0.11, 0.59) who had access to emotional support had significantly lower odds of PTSS than those who had no support. Females (AOR: 1.15; 95% CI: 1.04 -1.27) and males (AOR: 1.19; 95% CI: 0.11, 0.59) who felt socially isolated had higher odds of PTSS compared to those who did not feel socially isolated.

Interpretation
Compared to males, females had higher scores and higher odds of reporting PTSS during the COVID-19 pandemic. Access to emotional support ameliorated the odds of having PTSS for both sexes, while feeling socially isolated worsened the odds for both sexes.
The significance of serum S100 calcium-binding protein A4 in silicosis
Authors: Zhang Jing , Yuan Cuifang , Li Enhong , Guo Yiming , Cui Jie , Liu Heliang , Hao Xiaohui , Guo Lingli 
Published: April 2022

Abstract
Background
Silicosis is a chronic occupational pulmonary disease characterized by persistent inflammation and irreversible fibrosis. Considerable evidences now indicate that S100 calcium-binding protein A4 (S100A4) has been associated with fibrotic diseases. However, the role of S100A4 in silicosis is still unclear.

Methods
In this study, serum levels of S100A4, transforming growth factor-β1 (TGF-β1), connective tissue growth factor (CTGF), interleukin-6 (IL-6) and tumour necrosis factor-α (TNF-α) in patients with silicosis (n = 42) and control group (CG, n = 12) were measured by ELISA. S100A4 expression in lung tissues and primary alveolar macrophages (AMs) of mice with and without silicosis was detected by immunohistochemistry (IHC)/real-time PCR. The correlations between S100A4 and cytokines or lung function were assessed by Spearman's rank correlation analyses.

Results
Compared with CG, the levels of S100A4 were significantly increased in silicosis patients (70.84 (46.22, 102.46) ng/ml vs (49.84 (42.86, 60.02) ng/ml). The secretions of TGF-β1, CTGF, IL-6 and TNF-α in silicosis group were significantly higher than that in control group (p < 0.05). Serum S100A4 levels were positively correlated with TGF-β1 and IL-6, while were negatively correlated with lung function parameters including percentage of predicted forced vital capacity (FVC%pre), maximum vital capacity (Vcmax), deep inspiratory capacity (IC) and peak expiratory flow at 75% of vital capacity (PEF75). In receiver operating characteristic (ROC) analyses, S100A4 > 61.7 ng/ml had 63.4% sensitivity and 83.3% specificity for silicosis, and the area under the curve (AUC) was 0.707. Furthermore, immunostaining of lung tissues showed the accumulation of S100A4-positive cells in the areas of nodules of silicotic mice. The mRNA expression of S100A4 in the lung tissues and AMs of silicotic mice were significantly higher than controls.

Conclusion
These data suggested that increased S100A4 might contribute to the pathogenesis of silicosis.
Living with a frozen shoulder – a phenomenological inquiry
Authors: Lyne Suellen Anne , Goldblatt Fiona Mary , Shanahan Ernst Michael 
Published: April 2022

Abstract
Background
Frozen shoulder (adhesive capsulitis) is an inflammatory condition affecting the capsule of the glenohumeral joint. It is characterised by a painful restricted range of passive and active movement in all planes of motion. The impact of frozen shoulder on affected individuals remains poorly characterised. In this study we sought to better understand the lived experience of people suffering from frozen shoulder to characterise the physical, psychological and socioeconomic impact of the condition.

Methods
A qualitative study using a phenomenological approach was undertaken. Purposeful sampling was used to identify individuals for interview. Semi-structured interviews were performed and continued until saturation was achieved. A biopsychosocial framework was used during the analysis in order to generate themes which best described the phenomenon and reflected the lived experience of individuals’ suffering from this condition.

Results
Ten interviews were conducted, and five main themes emerged including; the severity of the pain experience, a loss of independence, an altered sense of self, the significant psychological impact, and the variable experience with healthcare providers.

Conclusions
These findings offer an insight into the lived experience of individuals with frozen shoulder, both on a personal and sociocultural level. The pain endured has profound impacts on physical and mental health, with loss of function resulting in a narrative reconstruction and altered sense of self. Our findings illustrate that frozen shoulder is much more than a benign self-limiting musculoskeletal condition and should be managed accordingly.

Trial registration
ANZCTR 12620000677909 Registered 28/04/2020 https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=379719&isReview=true
Potential biomarkers that discriminate rheumatoid arthritis and osteoarthritis based on the analysis and validation of datasets
Authors: Kang Le , Dai Chengqian , Wang Lihong , Pan Xinling 
Published: April 2022

Abstract
Background
Rheumatoid arthritis (RA) and osteoarthritis (OA) share some similar arthritic symptoms, but different mechanisms underlie the pathogenesis of these two diseases. Analysis of differentially expressed molecules in rheumatoid arthritis and osteoarthritis may assist in improving diagnosis and treatment strategies in clinical practice.

Methods
Microarray and RNA-seq data were acquired from the gene expression omnibus database. Differentially expressed genes (DEGs) were identified using Bioconductor packages. Receiver operating characteristic curves were plotted to assess performance. Gene ontology enrichment analysis was conducted using the clusterProfiler application. During validation, synovial fluid was harvested from patients who had undergone in-hospital joint replacement, in which the expression of proteins was measured using enzyme-linked immunosorbent assays.

Results
Compared with OA samples, RA samples showed 14 genes to be upregulated and 3 to be downregulated. Gene ontology analysis indicated that DEGs principally included molecules responsible for the regulation of a synovial tissue inflammatory response. Seven genes displayed a good discriminatory power with an AUC higher than 0.90. ADAMDEC1 was the biomarker that most clearly discriminated RA from OA in the database, exhibiting an AUC of 0.999, a sensitivity of 100%, and a specificity of 97.8%. Following validation, the expression levels of ADAMDEC1 in the synovial fluid from RA patients were significantly higher than those in the synovial fluid from OA patients (P < 0.05). At the cut-off value of 1957 pg/mL, ADAMDEC1 expression in the synovial fluid discriminated RA from OA with an AUC of 0.951, a specificity of 88.6%, and a sensitivity of 92.9%.

Conclusion
The differential expression of genes in RA compared with OA indicates potential targets for molecular diagnosis and treatment. The presence of ADAMDEC1 in synovial fluid is a good biomarker of RA.