Τρίτη 8 Δεκεμβρίου 2020

Comparison of ARIMA model and XGBoost model for prediction of human brucellosis

payt.helady61 shared this article with you from Inoreader

bmjopen-default-cover.png

Objectives

Human brucellosis is a public health problem endangering health and property in China. Predicting the trend and the seasonality of human brucellosis is of great significance for its prevention. In this study, a comparison between the autoregressive integrated moving average (ARIMA) model and the eXtreme Gradient Boosting (XGBoost) model was conducted to determine which was more suitable for predicting the occurrence of brucellosis in mainland China.

Design

Time-series study.

Setting

Mainland China.

Methods

Data on human brucellosis in mainland China were provided by the National Health and Family Planning Commission of China. The data were divided into a training set and a test set. The training set was composed of the monthly incidence of human brucellosis in mainland China from January 2008 to June 2018, and the test set was composed of the monthly incidence from July 2018 to June 2019. The mean absolute error (MAE), root mean square error (RMSE) and mean absolute percentage error (MAPE) were used to evaluate the effects of model fitting and prediction.

Results

The number of human brucellosis patients in mainland China increased from 30 002 in 2008 to 40 328 in 2018. There was an increasing trend and obvious seasonal distribution in the original time series. For the training set, the MAE, RSME and MAPE of the ARIMA(0,1,1)x(0,1,1)12 model were 338.867, 450.223 and 10.323, respectively, and the MAE, RSME and MAPE of the XGBoost model were 189.332, 262.458 and 4.475, respectively. For the test set, the MAE, RSME and MAPE of the ARIMA(0,1,1)x(0,1,1)12 model were 529.406, 586.059 and 17.676, respectively, and the MAE, RSME and MAPE of the XGBoost model were 249.307, 280.645 and 7.643, respectively.

Conclusions

The performance of the XGBoost model was better than that of the ARIMA model. The XGBoost model is more suitable for prediction cases of human brucellosis in mainland China.

View on the web

Evidence of sociocultural factors influencing intimate partner violence among young women

payt.helady61 shared this article with you from Inoreader
Objective

This study carried out a scoping review of research on intimate partner violence to determine the extent to which studies on sociocultural factors influencing intimate partner violence among young women (15–24 years) have been conducted, and how different geographical areas are represented. It also considered whether the methodologies used were sufficient to describe the risk factors, prevalence and health outcomes associated with intimate partner violence among young women.

Study design

Scoping review.

Methods

Online databases were used to identify studies published between 2008 and 2019. The Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines by Arksey and O'Malley were used to select studies, and primary studies were assessed using the Mixed Method Appraisal Tool, V.2011. Thematic content analysis was used to summarise the findings of the scoping review.

Results

The majority of publications eight (61.5%) reported cross-sectional studies, while four (31.5%) were qualitative studies. One of the studies (7%) collected measured data. Overall, 13 (100%) of the publications examined factors influencing intimate partner violence.

Using a customised quality assessment instrument, 12 (92.3%) of studies achieved a 'high'-quality ranking with a score of 100%, and 7.7% of studies achieved an 'average' quality ranking with a score of 75%.

Conclusions

While the quality of the studies is generally high, researches on sociocultural factors influencing intimate partner violence among young women would benefit from a careful selection of methods and reference standards, including direct measures of the violence affecting young women. Prospective cohort studies are required linking early exposure with individual, sociocultural and community factors, and detailing the abuse experienced from childhood, adolescence and youth.

PROSPERO registration number

CRD42018116463.

Scoping protocol publication

https://doi.org/10.1186/s13643-019-1234-y

View on the web

Use of implantable meshes for augmented rotator cuff repair: a systematic review and meta-analysis

payt.helady61 shared this article with you from Inoreader
Objective

To appraise studies reporting on clinical effectiveness and safety of surgical meshes used to augment rotator cuff repairs (RCRs).

Design

Systematic review and meta-analysis.

Data sources

MEDLINE, Embase and Cochrane databases were searched between April 2006 and April 2020.

Eligibility criteria

All studies evaluating adults (≥18 years) undergoing RCR were considered. There were no language restrictions.

Data extraction and synthesis

Screening, data extraction and quality appraisal were conducted by two independent reviewers. Meta-analysis was conducted using a random-effects models if ≥2 comparative studies reported the same outcome measure. Risk of bias assessment was undertaken for randomised (RoB2, Cochrane) and comparative studies (ROBINS-I, Cochrane).

Results

We included 60 studies, consisting of 7 randomised controlled trials, 13 observational comparative studies and 40 observational case series. All comparative studies reported on shoulder-specific functional outcome scores, 18 on the radiographic occurrence of re-tear and 14 on pain score metrics. All studies contained some risk of bias.

Compared with non-augmented repair, a small improvement in shoulder-specific function or pain scores was observed for synthetic patches with a mean improvement of 6.7 points on the University of California Los Angles (UCLA) shoulder score (95% CI 0.1 to 13.4) and 0.46 point reduction on the Visual Analogue Scale (95% CI –0.74 to –0.17), respectively. A reduced likelihood of radiologically observed re-tear was observed for synthetic (risk ratio (RR) 0.41, 95% CI 0.27 to 0.61) and allograft (RR 0.34, 95% CI 0.18 to 0.65) patches. A total of 49 studies reported on the occurrence of complications. Slightly higher crude complication rates were observed following patch-augmented repair (2.1%) than standard repair (1.6%).

Conclusions

While several studies suggest a decreased failure rate and small improvements in shoulder function and pain following augmented RCR, a paucity of rigorous clinical evaluation, for both effectiveness and safety, prevents firm recommendations.

Prospero registration number

CRD42017057908.

View on the web

Relationship between acute pain trajectories after an emergency department visit and chronic pain: a Canadian prospective cohort study

payt.helady61 shared this article with you from Inoreader
Objectives

Inadequate acute pain management can reduce the quality of life, cause unnecessary suffering and can often lead to the development of chronic pain. Using group-based trajectory modelling, we previously identified six distinct pain intensity trajectories for the first 14-day postemergency department (ED) discharge; two linear ones with moderate or severe pain during follow-up (~40% of the patients) and four cubic polynomial order trajectories with mild or no pain at the end of the 14 days (low final pain trajectories). We assessed if previously described acute pain intensity trajectories over 14 days after ED discharge are predictive of chronic pain 3 months later.

Design

Prospective cohort study.

Setting

Tertiary care trauma centre academic hospital.

Participants

This study included 18 years and older ED patients who consulted for acute (≤2 weeks) pain conditions that were discharged with an opioid prescription. Patients completed a 14-day diary in which they listed their daily pain intensity (0–10 numeric rating scale).

Outcomes

Three months after ED visit, participants were questioned by phone about their current pain intensity (0–10 numeric rating scale). Chronic pain was defined as patients with current pain intensity ≥4 at 3 months.

Results

A total of 305 participants remained in the study at 3 months, 49% were women and a mean age of 55±15 years. Twelve per cent (11.9; 95% CI 8.2 to 15.4) of patients had chronic pain at the 3-month follow-up. Controlling for age, sex and pain condition, patients with moderate or severe pain trajectories and those with only a severe pain trajectory were respectively 5.1 (95% CI 2.2 to 11.8) and 8.2 (95% CI 3.4 to 20.0) times more likely to develop chronic pain 3 months later compared with patients in the low final pain trajectories.

Conclusion

Specific acute pain trajectories following an ED visit are closely related to the development of chronic pain 3 months later.

Trial registration number

NCT02799004; Results.

View on the web

Real-world patterns of pegloticase use for treatment of gout: descriptive multidatabase cohort study

payt.helady61 shared this article with you from Inoreader
Objective

Pegloticase is used in severe refractory gout or in cases of intolerance to other urate-lowering therapies. We sought to evaluate the patterns of pegloticase use in the USA and the incidence of safety outcomes.

Methods

We conducted a retrospective descriptive study using data from two US commercial insurance claims databases (2010–2018). We identified new initiators of pegloticase with ≥1 gout diagnosis code in the 365-day baseline period prior to pegloticase initiation. We measured the number and duration of pegloticase infusions. We assessed the risk of anaphylaxis or anaphylactoid reactions, cardiovascular events, including myocardial infarction or stroke, and hospitalisation for heart failure (new onset or exacerbations) while undergoing pegloticase therapy.

Results

Among 2.9 million patients with ≥1 diagnosis of gout, we identified only 483 (179 in Optum and 304 in MarketScan) pegloticase initiators. The mean age and % female was 55.6 years, 10.9% for MarketScan and 60.6 years and 17.3% for Optum. Hypertension was present in up to 85%, diabetes mellitus in 38%, chronic kidney disease in 46% and heart failure in 21% of the patients. The median number of infusions was four and the duration of therapy was 3 months. During the mean 0.5-year follow-up time on pegloticase, there were 3 (0.6%) anaphylaxis, 7 (1.4%) composite cardiovascular, 31 (6.4%) heart failure hospitalisations and 3 (0.6%) deaths.

Conclusion

Pegloticase is rarely used in gout, and the median duration of pegloticase therapy was 3 months. There were few anaphylaxis events captured in this claims-based study, while heart failure hospitalisations were common.

View on the web

Association between age-related macular degeneration and arthritis

payt.helady61 shared this article with you from Inoreader

bmjopen-default-cover.png

Objective

To explore the association between age-related macular degeneration (AMD) and arthritis in a representative sample of the US population.

Design

Population-based, cross-sectional study.

Setting

The National Health and Nutrition Examination Survey (NHANES) 2005–2008.

Participants

A total of 4813 participants aged 40 years and older with available information on AMD and arthritis in the 2005–2008 NHANES.

Methods

The status and types of arthritis were obtained from questionnaires. Non-mydriatic fundus photographs were collected. The types of AMD were assessed using the modified Wisconsin Age-Related Maculopathy Grading Classification Scheme. The association between arthritis and AMD was evaluated using logistic regression models.

Results

After adjusting for covariates, participants with any or early AMD had significantly lower odds of having any type of arthritis (any AMD: OR=0.56, 95% CI: 0.36–0.86; early AMD: OR=0.55, 95% CI: 0.34–0.88) or osteoarthritis (OA) (any AMD: OR=0.43, 95% CI: 0.26–0.71; early AMD: OR=0.44, 95% CI: 0.25–0.76) compared with those without AMD. When considering AMD as the outcome, significant negative associations were also found between any arthritis or OA and any (any arthritis: OR=0.64, 95% CI: 0.43–0.94; OA: OR=0.52, 95% CI: 0.33–0.82) or early AMD (any arthritis: OR=0.61, 95% CI: 0.40–0.93; OA: OR=0.51, 95% CI: 0.31–0.86) in the multivariable logistic models. There was no significant association between different types of arthritis and late AMD.

Conclusions

People with arthritis, especially those with OA, were less likely to have AMD compared with those without arthritis and vice versa. Further studies are needed to confirm this potential protective effect of arthritis and/or arthritis treatment on AMD and to explore the underlying mechanisms.

View on the web

Δευτέρα 7 Δεκεμβρίου 2020

The Influence of Surface Electromyography Visual and Clinician Verbal Feedback on Swallow Effort Ratio at Different Bolus Volumes in a Healthy Population

pa.ythelady61 shared this article with you from Inoreader

?image=000511497-1.jpg

Background/Aims: The effortful swallow is a common treatment intervention requiring increased intensity to facilitate adaptations and modify swallow kinematics. The type of feedback and bolus volume provided may influence the intensity of the effortful swallow. To determine the increased effortful swallow intensity, a clinician can collect the peak amplitude of an effortful swallow and a typical swallow and compute a "swallow effort ratio" (SER). Dividing the effortful swall ow surface electromyography (sEMG) peak amplitude by the typical swallow sEMG peak amplitude derives the SER. A higher SER suggests increased intensity. An increase in the SER may have clinical relevance in swallowing therapy as a threshold of intensity is required to elicit neuroplastic change. The purpose of this investigation was to determine whether sEMG visual and clinician verbal feedback increases the SER. Additionally, the investigation examined whether the SER is influenced by different liquid bolus volumes. Methods: Eighty-two nondysphagic, healthy adults were assigned at random to 2 groups. One group received no feedback, and the other received verbal and visual feedback while performing typical and effortful swallows at 3 liquid volumes. Results: An analysis of covariance compared the typical and effortful peak swallow amplitudes among 3 volumes in the 2 feedback groups. There was a significant effect on the peak amplitude values by feedback g roup F(2, 79) = 22.82, p #x3c; 0.001. There were no differences in peak amplitude by volume regardless of feedback F(2, 78) = 0.413, p = 0.663. Conclusion: It appears that sEMG visual and clinician verbal feedback increases the SER, which may be a surrogate for intensity. An increased SER may have a positive effect on swallow intervention as intensity is known to influence outcomes of exercise and elicit neuroplastic change.
Folia Phoniatr Logop
View on the web

Αρχειοθήκη ιστολογίου