Nevin Manimala

Science. 2022 Sep 16;377(6612):1304-1310. doi: 10.1126/science.abl4476. Epub 2022 Sep 15.

ABSTRACT

The authors analyzed data from multiple large-scale randomized experiments on LinkedIn’s People You May Know algorithm, which recommends new connections to LinkedIn members, to test the extent to which weak ties increased job mobility in the world’s largest professional social network. The experiments randomly varied the prevalence of weak ties in the networks of over 20 million people over a 5-year period, during which 2 billion new ties and 600,000 new jobs were created. The results provided experimental causal evidence supporting the strength of weak ties and suggested three revisions to the theory. First, the strength of weak ties was nonlinear. Statistical analysis found an inverted U-shaped relationship between tie strength and job transmission such that weaker ties increased job transmission but only to a point, after which there were diminishing marginal returns to tie weakness. Second, weak ties measured by interaction intensity and the number of mutual connections displayed varying effects. Moderately weak ties (measured by mutual connections) and the weakest ties (measured by interaction intensity) created the most job mobility. Third, the strength of weak ties varied by industry. Whereas weak ties increased job mobility in more digital industries, strong ties increased job mobility in less digital industries.

PMID:36107999 | DOI:10.1126/science.abl4476

PLoS One. 2022 Sep 15;17(9):e0273666. doi: 10.1371/journal.pone.0273666. eCollection 2022.

ABSTRACT

BACKGROUND: Paediatric early warning systems (PEWS) are a means of tracking physiological state and alerting healthcare professionals about signs of deterioration, triggering a clinical review and/or escalation of care of children. A proactive end-to-end deterioration solution (the DETECT surveillance system) with an embedded e-PEWS that included sepsis screening was introduced across a tertiary children’s hospital. One component of the implementation programme was a sub-study to determine an understanding of the DETECT e-PEWS in terms of its clinical utility and its acceptability.

AIM: This study aimed to examine how parents and health professionals view and engage with the DETECT e-PEWS apps, with a particular focus on its clinical utility and its acceptability.

METHOD: A prospective, closed (tick box or sliding scale) and open (text based) question, e-survey of parents (n = 137) and health professionals (n = 151) with experience of DETECT e-PEWS. Data were collected between February 2020 and February 2021.

RESULTS: Quantitative data were analysed using descriptive and inferential statistics and qualitative data with generic thematic analysis. Overall, both clinical utility and acceptability (across seven constructs) were high across both stakeholder groups although some challenges to utility (e.g., sensitivity of triggers within specific patient populations) and acceptability (e.g., burden related to having to carry extra technology) were identified.

CONCLUSION: Despite the multifaceted nature of the intervention and the complexity of implementation across a hospital, the system demonstrated clinical utility and acceptability across two key groups of stakeholders: parents and health professionals.

PMID:36107953 | DOI:10.1371/journal.pone.0273666

PLoS One. 2022 Sep 15;17(9):e0273734. doi: 10.1371/journal.pone.0273734. eCollection 2022.

ABSTRACT

BACKGROUND: Anticipated stigma related to chronic illness patients undermines diagnosis, treatment, and successful health outcomes. The study aimed to assess the magnitude and factors associated with anticipated stigma among patients with chronic illness attending follow-up clinics in Amhara Region Referral Hospitals, Ethiopia.

METHODS: A cross-sectional institution-based study was conducted in Amhara Region Referral Hospitals from 01 March to 15 April 2021. A simple random sampling technique was used to select the three Referral Hospitals in the region and study subjects. Data were collected using a pre-tested interview-based questionnaire. Data were entered and cleaned with Epi-Info version 6 and exported for analysis STATA version 14. Multiple linear regression was used to show the association between anticipated stigma and potential factors. Associations were measured using ß coefficients and were considered statistically significant if the p-value > 0.05.

RESULTS: A total of 779 patients were included for analysis with a response rate of 97%. Their mean (Standard deviation) of anticipated stigma was estimated at 1.86 and 0.5, respectively. After running an assumption test for multiple linear regression; educational status, cigarette smoking, psychological distress, medication adherence, alcohol consumption, and social part of the quality of life were statically significantly associated with anticipated stigma.

CONCLUSION AND RECOMMENDATION: The result showed a high level of anticipated stigma reported among the participants. Emphasizing improving their social part of the quality of life, avoiding risky behaviors like alcohol consumption and cigarette smoking, access to health education for chronically ill patients, integrating mental health in all types of chronic disease, and developing strategies and protocols which will help to improve patient medication adherence to their prescribed medication will be crucial. This can provide a foundation for government andnon-governmental organizations, and researchers implementing evidence-based interventions and strategies on chronic care to address factors related to anticipated stigma.

PMID:36107943 | DOI:10.1371/journal.pone.0273734

Prep Biochem Biotechnol. 2022 Sep 15:1-6. doi: 10.1080/10826068.2022.2119573. Online ahead of print.

ABSTRACT

Experiments were carried out to illustrate the effect of UV light on the course of the enzymatic reaction of the coumarin derivative. Only the pulsating light of the UV diode gives the correct results for the determination of the kinetic constants of the enzymatic reaction. The enzyme concentration limit was found where the description of the M-M model breaks. It was shown that the system determines the kinetic parameters of enzymatic reactions: V_max-the maximum rate of reaction and K_M–the Michaelis constant. This method produces kinetic constants calculated from the changes in enzyme product concentration using the Michaelis-Menten model. To verify the results, we used a statistical analysis that checks the correctness of the model used.

PMID:36107636 | DOI:10.1080/10826068.2022.2119573

Medicine (Baltimore). 2022 Sep 2;101(35):e30121. doi: 10.1097/MD.0000000000030121.

ABSTRACT

BACKGROUND: Activation of venous flow has been shown with different types of electrical stimulation. The aim of this study is to compare the hemodynamic effects of transcutaneous electrical nerve stimulation (TENS), neuromuscular electrical stimulation (NMES), and sham stimulation on healthy young people.

METHODS: This randomized crossover study was conducted during June 2018 in the Faculty of Physical Therapy of A Coruña (Spain). Twenty-four university students (50% male) received in a randomized order 5 Hz-TENS, NMES, and sham stimulation on soleus muscle. Flow volume (FV) and peak velocity (PV) from popliteal vein were recorded via Doppler ultrasound, and relative changes from baseline were determined. Discomfort among the 3 stimulations was also compared.

RESULTS: The differences among the 3 stimulations were assessed using the ANOVA for repeated measured, the Friedman test and the Kendall tau test, according to the type of measurement to be compared. FV (mL/min) and PV (cm/s) increased significantly after NMES (percentual increase 37.2 ± 62.0%, P = .002; 264.4 ± 152.2%, P < .001, respectively) and TENS (226.2 ± 190.3%, P < .001; 202.7 ± 144.6%, P < .001, respectively). These percentual changes from basal level in hemodynamics were statistically different to those after placebo, which was ineffective enhancing hemodynamics. The improvements in FV were statistically higher with TENS than with NMES (P < .001), but there was no statistical difference in PV (P = .531). Despite NMES was applied at a significantly lower amplitude than TENS (P < .001), NMES protocol was the worst tolerated, though the differences in discomfort were not statistically significant.

CONCLUSION: Both active electrical protocols but not sham stimulation increased hemodynamics in healthy people. TENS obtained higher flow volume increase from baseline than NMES, considered globally at not only in its on-time.

PMID:36107611 | DOI:10.1097/MD.0000000000030121

Medicine (Baltimore). 2022 Sep 2;101(35):e30382. doi: 10.1097/MD.0000000000030382.

ABSTRACT

This study aimed to investigate the value of the product of peripheral blood platelet and serum C-reactive protein (P-CRP), an inflammatory indicator, for the prognosis of patients with osteosarcoma. Patients with osteosarcoma who were diagnosed and treated at the First Affiliated Hospital of Guangxi Medical University, China, between January 2012 and December 2019 were included in this retrospective study. Receiver operating characteristic curves were used to calculate the optimal cut-off values for inflammatory indicators such as P-CRP, the C-reactive protein/albumin ratio (CRP/Alb), the neutrophil-lymphocyte ratio (NLR), and the platelet-lymphocyte ratio (PLR) in the peripheral blood of patients before treatment. Based on the cut-off values, the patients were divided into high P-CRP and low P-CRP groups, high CRP/Alb and low CRP/Alb groups, high NLR and low NLR groups, and high NLR and low NLR groups; the Kaplan-Meier method was used to compare the overall survival (OS) rates and OS times of the above groups. Univariate and multivariate Cox regression models were used to analyze the effects of various factors on the prognosis of osteosarcoma and to determine the independent influencing factors. The Kaplan-Meier survival analysis results suggested that the OS rate of the high P-CRP group was significantly lower than that of the low P-CRP group (14.0% vs 67.2%, P < .001). The univariate analysis results suggested that tumor volume, tumor stage, NLR, PLR, P-CRP and CRP/Alb were factors that affected the prognosis of patients with osteosarcoma, and the differences were statistically significant (P < .05). The multivariate analysis results showed that tumor volume (hazard ratio [HR] = 1.061; 95% CI, 1.001-1.125; P = .046) and preoperative P-CRP (HR, 1.037; 95% CI, 1.024-1.050; P < .01) were independent prognostic factors affecting the OS rate after osteosarcoma surgery. The results of our study showed that P-CRP is a novel and promising prognostic indicator for patients with osteosarcoma. The higher the P-CRP level in the peripheral blood of patients is before treatment, the worse the prognosis might be.

PMID:36107592 | DOI:10.1097/MD.0000000000030382

Medicine (Baltimore). 2022 Sep 2;101(35):e30148. doi: 10.1097/MD.0000000000030148.

ABSTRACT

The lack of knowledge on health literacy affects all segments of society, particularly health workers. The objectives were to identify nursing students’ means of accessing information during the coronavirus disease 2019 pandemic, their level of health literacy, and the factors that affect it. This cross-sectional study was conducted in Turkey among 398 nursing students of Çukurova University and Van Yüzüncü Yil University between June 1 and June 30, 2020. As a data collection tool, E-Health Literacy Scale was used, with students’ characteristics and personal information form related to Internet use. These forms were converted to the online format. The survey link was sent to the students’ smartphones and/or e-mails to ask them to participate. Majority of participants were Van Yüzüncü Yil University nursing students (63.8%). E-SYO score average of all students was found to be 29.42 ± 4.39 (min = 14, max = 40); it was is found be at a good level. They used the Internet as the first source of information about coronavirus disease 2019 (65.1%).Among the participants, 65.8% stated that it was important to access the health resource on the Internet and 19.1% of the participants thought that it was very important. It was found that Internet use was being used for >3 times a day (72.9%). The age, class, gender, family type, income level, high school from which they graduated from, and their working status significantly were statistically affecting their health literacy (P < .05). The health literacy scale scores were significant and higher than those who did not know the concept of health literacy, and those who perceived Internet skills well and very well than those who perceived them poorly (P < .05). Nursing students were found to have good average health literacy averages. Improving the health literacy is important for making individuals healthier.

PMID:36107588 | DOI:10.1097/MD.0000000000030148

Medicine (Baltimore). 2022 Sep 2;101(35):e30338. doi: 10.1097/MD.0000000000030338.

ABSTRACT

Acupuncture manipulation with needling direction is important for the therapeutic effect based on traditional Chinese medicine theory. However, there is controversy over directional manipulation and therapeutic effect, despite some research showing that acupuncture manipulations may have something to do with therapeutic effect. Moreover, research usually focuses on the therapeutic effects on the acupoints and acupuncture time rather than exploring the manipulation method. This study applies a semiconductor analyzer to investigate the effects of acupuncture manipulation. 10 healthy participants were recruited for the study. We used a cross-over design to compare the effect of different manipulation on individuals. This study employed an Agilent B1500A semiconductor analyzer to investigate the electric characteristics of meridians under directional supplementation and draining manipulation. We measured the electric current of meridians under different manipulation, and compared the difference between supplementation and draining manipulation in healthy individuals. The electric current was significantly larger in supplementation manipulation compared to draining manipulation in the meridians (P < .001). The measured electric current in the same manipulation methods did not show a statistical difference between meridians (P = .094). The different directional manipulation result in different electric currents in humans. Our finding implies that the supplementation and draining manipulation may result in different therapeutic effects clinically as the description of traditional Chinese medicine theory. Therefore, directional manipulation may need to be taken into consideration in future acupuncture studies and clinical management.

PMID:36107585 | DOI:10.1097/MD.0000000000030338

Medicine (Baltimore). 2022 Sep 2;101(35):e30361. doi: 10.1097/MD.0000000000030361.

ABSTRACT

The COVID-19 pandemic has disrupted medical care worldwide and caused delays in care for many illnesses and procedures unrelated to COVID-19; however, less clear is how it may have affected diagnosis of conditions that present with similar symptoms, such as primary pulmonary coccidioidomycosis (PPC). We conducted an observational cohort study of patients diagnosed with PPC between March 1 and December 1 in 2 years: 2019 (before COVID-19) and in 2020 (after COVID-19) to compare the time from symptom onset to PPC diagnosis. Relevant demographic and clinical variables were collected, and statistical analyses were performed with the χ2 test, Wilcoxon rank sum test, and Cox proportional hazards regression analysis. During 2019, 83 patients were diagnosed with PPC. During 2020, 113 patients were diagnosed with PPC. For both groups, the median time from symptom onset to diagnosis of PPC was 14 days (P = .13). No significant differences in time to diagnosis existed between the 2 years for location of diagnosis (outpatient clinic, emergency department, or in hospital), for computed tomographic imaging performed before diagnosis, or for number of COVID-19 tests received before PPC diagnosis. In addition, there were no differences in the 2 years between the total number of clinical visits before diagnosis. However, patients in the post-COVID-19 group who had fever were diagnosed with PPC earlier than those without fever (hazard ratio, 1.77; 95% confidence interval, 1.15-2.73; P = .01). Contrary to what we expected, no significant delay in diagnosis of PPC occurred during the COVID-19 pandemic.

PMID:36107584 | DOI:10.1097/MD.0000000000030361

Medicine (Baltimore). 2022 Sep 2;101(35):e30355. doi: 10.1097/MD.0000000000030355.

ABSTRACT

INTRODUCTION: Low-volume bowel preparation has been developed to increase patient compliance. We compared 1 L of polyethylene glycol/ascorbic acid (PEG/Asc) and oral sodium sulfate (OSS) with respect to bowel preparation efficacy, compliance, and safety.

METHODS: A multicenter, prospective, randomized, single-blinded, non-inferiority trial was conducted in 3 hospitals. Patients were randomized to receive a bowel-cleansing agent. Bowel-cleansing efficacy was evaluated using the Boston Bowel Preparation Scale (BBPS). Satisfaction, feeling, taste of the bowel cleanser, and adverse events after taking the bowel cleanser were investigated through a questionnaire. Additionally, blood samples were analyzed before and after bowel cleansing.

RESULTS: In total, 172 patients were analyzed (85 with 1 L PEG/Asc and 87 with OSS), and the mean BBPS scores were comparable between agents. The 1L PEG/Asc group tended to have a higher BBPS score in the right colon (2.22 vs 2.02; P = .08). The compliance of 1 L of PEG/Asc was comparable to that of OSS. Patients taking 1 L PEG/Asc reported greater thirst and dizziness (P = .04 and P = .047, respectively) than the OSS cohort. On the other hand, gastrointestinal symptoms such as vomiting and abdominal distension were more common in the OSS group, without statistical significance. In terms of laboratory adverse events, elevation of serum creatinine was found in both groups after taking the bowel cleansing agent (P < .001 for the 1L PEG/Asc group; P = .04 for the OSS group). However, most of the increased values were within the normal ranges.

DISCUSSION: The 1L PEG/Asc treatment was comparable to OSS in terms of bowel preparation efficacy, compliance, and safety.

PMID:36107563 | DOI:10.1097/MD.0000000000030355