scholarly journals Atmospheric Pressure Change Measurement: An Observational Study

2021 ◽  
Author(s):  
Kuat Oshakbayev ◽  
Gulnara Bedelbayeva ◽  
Khalit Mustafin ◽  
Abdul Sabir ◽  
Attila Tordai
Keyword(s):  
Observational Study ◽  
Study Design ◽  
Atmospheric Pressure ◽  
Pressure Change ◽  
Indirect Measurement ◽  
Liquid Volume ◽  
Change Measurement ◽  
Air Volume

Abstract Introduction: The aim of the study was to show an atmospheric pressure change by indirect measurement in hermetically closed vessels during four years of follow-up.Methods: Study design: an observational study. In hermetically sealed elastic bottles with different liquids were measured differences in liquid and air volumes from baseline to final follow-up period. The physical law of flotation was used to measure liquid and air volume above liquid in bottles. To measure liquid and air (above liquid) volumes in each bottle was used the physical law of buoyancy. The follow-up period was four years.Results: The volumes of liquid and air in all bottles were decreased after the follow-up period to 14.38±2.40 and 36.25±3.37 ml, respectively. Air volume in comparison to liquid volume decreased more than two times significantly (P=0.0007) after the follow-up period.Conclusions: Thus, atmospheric pressure increased during the last 4-year follow-up period. Further investigations are needed.

scholarly journals Case Study on Post-Discharge Persistence or Reappearance of Respiratory Symptoms in COVID-19 Hypoxia Patients

2021 ◽  
pp. 31-39
Author(s):  
Jayshree Kharche ◽  
Deepak S. Khismatrao ◽  
Reshma Patil ◽  
Rajkumar Nikalje
Keyword(s):  
Natural History ◽  
Observational Study ◽  
Study Design ◽  
Respiratory Symptoms ◽  
Oxygen Therapy ◽  
Post Discharge ◽  
Respiratory Problems ◽  
History Of

Introduction: News published about persistence or reappearance of symptoms in Covid 19 is worrisome. However, only one study from Italy is observed in this reference. Aim: the current study is conducted to study persistence or reappearance of especially respiratory symptoms amongst COVID 19 hypoxia patients. Study Design: Post-discharge follow-up, observational study with the telephonic interview of Covid 19 hypoxia patients from a dedicated Covid 19 hospital in India. Methods: Sixty-two patients were interviewed 1 – 3 months post-discharge to elicit history on persistence or reappearance of respiratory symptoms. Results: out of the results many patients doesnot show any symptoms compared to female, male are more prone to respiratory problems. Thus, the oxygen therapy showed proof that males are more prone to illness and depict the symptoms compared to females. Conclusion: A large multi-centric year-long study is recommended to further conclude on the natural history of the disease.

scholarly journals Study design: what’s in a name?

2020 ◽  
Vol 183 (6) ◽  
pp. E11-E13
Author(s):  
Olaf M Dekkers ◽  
Rolf H H Groenwold
Keyword(s):  
Observational Study ◽  
Study Design ◽  
Observational Studies ◽  
Case Control Study ◽  
Case Control ◽  
Short Paper ◽  
Cross Sectional ◽  
Trial Intervention ◽  
Control Study

The name of the study should properly reflect the actual conduct and analysis of the study. This short paper provides guidance on how to properly name the study design. The first distinction is between a trial (intervention given to patients to study its effect) and an observational study. For observational studies, it should further be decided whether it is cross-sectional or whether follow-up time is taken into account (cohort or case–control study). The distinction prospective-retrospective has two disadvantages: prospective is often seen as marker of higher quality, which is not necessarily true; there is no unifying definition that makes a proper distinction between retrospective and prospective possible.

scholarly journals Cost comparison of asthma treatments in 12-week study: caution about matching and short observational follow-up

2016 ◽  
Vol 11 ◽  
Author(s):  
David B. Price ◽  
Job F.M. Van Boven ◽  
Lisa M. Law ◽  
Alessandra Cifra ◽  
R. Brett McQueen
Keyword(s):  
Observational Study ◽  
Cost Analysis ◽  
Study Design ◽  
Observational Studies ◽  
The Other ◽  
Cost Comparison ◽  
Treatment Groups ◽  
Matching Methods ◽  
Key Characteristics

In the absence of randomisation, observational studies must take extra care to create treatment groups that are comparable in terms of key characteristics. Various matching methods exist which can create sound comparisons, minimising confounding where possible. A recent observational study by Dal Negro et al. carried out a cost analysis comparing two asthma medications. They report strong conclusions which favour one treatment over the other, however they include little discussion on the limitations of their study. The purpose of this letter is to comment on the weaknesses of the study design, including the level of matching used, and to urge readers to consider these issues alongside the interpretation of results.

IS STEP RATE ASSOCIATED WITH RUNNING INJURY INCIDENCE? AN OBSERVATIONAL STUDY WITH 9- MONTH FOLLOW UP

2020 ◽  
Vol 15 (2) ◽  
pp. 221-228
Author(s):  
Eliza B. Szymanek ◽  
Erin M. Miller ◽  
Amy N. Weart ◽  
Jamie B. Morris ◽  
Donald L. Goss
Keyword(s):  
Observational Study ◽  
Injury Incidence ◽  
Step Rate ◽  
Running Injury

scholarly journals Safety of High-Dose Dabigatran in Elderly and Younger Patients with a Low Bleeding Risk: A Prospective Observational Study

Cardiology ◽  
2021 ◽  
pp. 1-5
Author(s):  
Aharon Erez ◽  
Gregory Golovchiner ◽  
Robert Klempfner ◽  
Ehud Kadmon ◽  
Gustavo Ruben Goldenberg ◽  
...  
Keyword(s):  
Observational Study ◽  
Elderly Patients ◽  
Prospective Observational Study ◽  
Bleeding Risk ◽  
The Elderly ◽  
High Dose ◽  
World Population ◽  
Younger Patients ◽  
End Point

<b><i>Introduction:</i></b> In patients with atrial fibrillation (AF) at risk for stroke, dabigatran 150 mg twice a day (DE150) is superior to warfarin for stroke prevention. However, there is paucity of data with respect to bleeding risk at this dose in elderly patients (≥75 years). We aimed to evaluate the safety of DE150 in comparison to warfarin in a real-world population with AF and low bleeding risk (HAS-BLED score ≤2). <b><i>Methods:</i></b> In this prospective observational study, 754 consecutive patients with AF and HAS-BLED score ≤2 were included. We compared outcome of elderly patients (age ≥75 tears) to younger patients (age &#x3c;75 years). The primary end point was the combined incidence of all-cause mortality, stroke, systemic emboli, and major bleeding event during a mean follow-up of 1 year. <b><i>Results:</i></b> There were 230 (30%) elderly patients, 151 patients were treated with warfarin, and 79 were treated with DE150. Fifty-two patients experienced the primary endpoint during the 1-year follow-up. Among the elderly, at 1-year of follow-up, the cumulative event rate of the combined endpoint in the DE150 and warfarin was 8.9 and 15.9% respectively (<i>p</i> = 0.14). After adjustment for age and gender, patients who were treated with DE150 had a nonsignificant difference in the risk for the combined end point as patients treated with warfarin both among the elderly and among the younger population (HR 0.58, 95% C.I = 0.25–1.39 and HR = 1.12, 95% C.I 0.62–2.00, respectively [<i>p</i> for age-group-by-treatment interaction = 0.83). <b><i>Conclusions:</i></b> Our results suggest that Dabigatran 150 mg twice a day can be safely used among elderly AF patients with low bleeding risk.

scholarly journals The effect of COVID-19 pandemic and lockdown on consultation numbers, consultation reasons and performed services in primary care: results of a longitudinal observational study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Ingmar Schäfer ◽  
Heike Hansen ◽  
Agata Menzel ◽  
Marion Eisele ◽  
Daniel Tajdar ◽  
...  
Keyword(s):  
Primary Care ◽  
Observational Study ◽  
Rural Areas ◽  
Longitudinal Observational Study ◽  
Multivariable Analyses ◽  
Gastrointestinal Complaints ◽  
Urban And Rural Areas ◽  
Quota Sampling ◽  
Primary Care Practices

Abstract Objectives The aims of our study were to describe the effect of the COVID-19 pandemic and lockdown on primary care in Germany regarding the number of consultations, the prevalence of specific reasons for consultation presented by the patients, and the frequency of specific services performed by the GP. Methods We conducted a longitudinal observational study based on standardised GP interviews in a quota sampling design comparing the time before the COVID-19 pandemic (12 June 2015 to 27 April 2017) with the time during lockdown (21 April to 14 July 2020). The sample included GPs in urban and rural areas 120 km around Hamburg, Germany, and was stratified by region type and administrative districts. Differences in the consultation numbers were analysed by multivariate linear regressions in mixed models adjusted for random effects on the levels of the administrative districts and GP practices. Results One hundred ten GPs participated in the follow-up, corresponding to 52.1% of the baseline. Primary care practices in 32 of the 37 selected administrative districts (86.5%) could be represented in both assessments. At baseline, GPs reported 199.6 ± 96.9 consultations per week, which was significantly reduced during COVID-19 lockdown by 49.0% to 101.8 ± 67.6 consultations per week (p < 0.001). During lockdown, the frequency of five reasons for consultation (-43.0% to -31.5%) and eleven services (-56.6% to -33.5%) had significantly decreased. The multilevel, multivariable analyses showed an average reduction of 94.6 consultations per week (p < 0.001). Conclusions We observed a dramatic reduction of the number of consultations in primary care. This effect was independent of age, sex and specialty of the GP and independent of the practice location in urban or rural areas. Consultations for complaints like low back pain, gastrointestinal complaints, vertigo or fatigue and services like house calls/calls at nursing homes, wound treatments, pain therapy or screening examinations for the early detection of chronic diseases were particularly affected.

scholarly journals Role of caregiver factors in outpatient medical follow-up post-stroke: observational study in Singapore

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Shilpa Tyagi ◽  
Gerald Choon-Huat Koh ◽  
Nan Luo ◽  
Kelvin Bryan Tan ◽  
Helen Hoenig ◽  
...  
Keyword(s):  
Observational Study ◽  
Management Strategies ◽  
Stroke Survivor ◽  
Stroke Survivors ◽  
Post Stroke ◽  
Memory Problems ◽  
Healthcare Needs ◽  
Stroke Study

Abstract Background Outpatient medical follow-up post-stroke is not only crucial for secondary prevention but is also associated with a reduced risk of rehospitalization. However, being voluntary and non-urgent, it is potentially determined by both healthcare needs and the socio-demographic context of stroke survivor-caregiver dyads. Therefore, we aimed to examine the role of caregiver factors in outpatient medical follow-up (primary care (PC) and specialist outpatient care (SOC)) post-stroke. Method Stroke survivors and caregivers from the Singapore Stroke Study, a prospective, yearlong, observational study, contributed to the study sample. Participants were interviewed 3-monthly for data collection. Counts of PC and SOC visits were extracted from the National Claims Database. Poisson modelling was used to explore the association of caregiver (and patient) factors with PC/SOC visits over 0–3 months (early) and 4–12 months (late) post-stroke. Results For the current analysis, 256 stroke survivors and caregivers were included. While caregiver-reported memory problems of a stroke survivor (IRR: 0.954; 95% CI: 0.919, 0.990) and caregiver burden (IRR: 0.976; 95% CI: 0.959, 0.993) were significantly associated with lower early post-stroke PC visits, co-residing caregiver (IRR: 1.576; 95% CI: 1.040, 2.389) and negative care management strategies (IRR: 1.033; 95% CI: 1.005, 1.061) were significantly associated with higher late post-stroke SOC visits. Conclusion We demonstrated that the association of caregiver factors with outpatient medical follow-up varied by the type of service (i.e., PC versus SOC) and temporally. Our results support family-centred care provision by family physicians viewing caregivers not only as facilitators of care in the community but also as active members of the care team and as clients requiring care and regular assessments.

scholarly journals Factors That Cause Concerns after Cardioverter Defibrillator Implantation

2021 ◽  
Vol 18 (11) ◽  
pp. 6095
Author(s):  
Olimpia Karczewska ◽  
Agnieszka Młynarska
Keyword(s):  
Observational Study ◽  
Secondary Prevention ◽  
Negative Emotions ◽  
Female Gender ◽  
Multiple Regression Model ◽  
Icd Implantation ◽  
Cardioverter Defibrillator ◽  
Input Method ◽  
Two Stages

Background and Objectives: The aim of the study was to assess the factors that influence the occurrence of concerns and their intensification after the implantation of a cardioverter defibrillator. Materials and Methods: This was a prospective and observational study including 158 patients. The study was conducted in two stages: stage I before implantable cardioverter defibrillator (ICD) implantation and stage II follow-up visit six months after ICD implantation. Standardized questionnaires were used in both stages. Results: Age and female gender were significantly correlated with the occurrence and intensity of concerns. Patients who had a device implanted for secondary prevention also experienced higher levels of concern. Additionally, a multiple regression model using the stepwise input method was performed. The model was statistically significant and explained 42% of the observed variance in the dependent variable (p = 0.0001, R2 = 0.4215). The analysis showed that age (p = 0.0036), insomnia (p = 0.0276), anxiety (p = 0.0000) and negative emotions (p = 0.0374) were important predictors of the dependent variable and enabled higher levels of the number of concerns to be predicted. Conclusions: There is a relationship between the severity of the concerns related to an implanted ICD and age, gender, anxiety, negative emotions and insomnia. Indications for ICD implantation may be associated with increased concerns about ICD.

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