scholarly journals Did We STOP-IT? a Population-Based Interrupted Time Series Analysis of Antimicrobial Duration for Intra-abdominal Infections Before and after the Publication of a Landmark Randomized Controlled Trial

2021 ◽  
Vol 233 (5) ◽  
pp. e60-e61
Author(s):  
Joshua S. Ng ◽  
Andrea Soo ◽  
Paul B. McBeth ◽  
Ori D. Rotstein ◽  
Danny J. Zuege ◽  
...  
Keyword(s):  
Time Series ◽  
Randomized Controlled Trial ◽  
Time Series Analysis ◽  
Controlled Trial ◽  
Interrupted Time Series ◽  
Population Based ◽  
Interrupted Time Series Analysis ◽  
Randomized Controlled ◽  
Before And After ◽  
Abdominal Infections

scholarly journals Assessing the impact of retraction on the citation of randomized controlled trial reports: an interrupted time-series analysis

2018 ◽  
Vol 24 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Andrew Mott ◽  
Caroline Fairhurst ◽  
David Torgerson
Keyword(s):  
Time Series ◽  
Randomized Controlled Trial ◽  
Randomized Controlled Trials ◽  
Controlled Trial ◽  
Interrupted Time Series ◽  
Controlled Trials ◽  
Interrupted Time Series Analysis ◽  
Randomized Controlled ◽  
Before And After ◽  
The Impact

Objectives To assess the impact of retraction on the citation of randomized controlled trials. Methods We used an interrupted time-series with matched controls. PubMed, CINHAL, Google and the Retraction Watch Database were searched. We identified retracted publications reporting the results of randomized controlled trials involving human participants with two years of available data before and after retraction. We obtained monthly citation counts across all articles for the 24 months before and after retraction, from Web of Science. We used a Poisson segmented regression to detect changes in the level and trend of citation following retraction. We also undertook a matched control analysis of unretracted randomized controlled trials and a sensitivity analysis to account for cases of large-scale, well-advertised fraud. Results We identified 387 retracted randomized controlled trial reports, of which 218 (56.3%) were included in the interrupted time-series analysis. A reduction of 22.9% (95% CI 4.0% to 38.2%, p = 0.02) was observed in the number of citations in the month after retraction, and a further reduction of 1.9% (95% CI 0.4% to 3.5%, p = 0.02) per month in the following 24 months, relative to the expected trend. There was no evidence of a statistically significant reduction among the matched controls. Authors with a large number of retractions saw a 48.2% reduction at the time of retraction (95% CI 17.7% to 67.3%, p = 0.01). Other cases had a more gradual reduction with no change at the time of retraction and a 1.8% reduction per month in the following 24 months (95% CI 0.2% to 3.4%, p = 0.03). Conclusions Retractions of randomized controlled trial reports can be effective in reducing citations. Other factors, such as the scale of the retractions and media attention, may play a role in the effectiveness of the reduction.

scholarly journals The impact of implementing the 2016 WHO Recommendations on Antenatal Care for a Positive Pregnancy Experience on perinatal deaths: an interrupted time-series analysis in Mpumalanga province, South Africa

2020 ◽  
Vol 5 (12) ◽  
pp. e002965
Author(s):  
Tina Lavin ◽  
Robert Clive Pattinson ◽  
Erin Kelty ◽  
Yogan Pillay ◽  
David Brian Preen
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Perinatal Mortality ◽  
Interrupted Time Series ◽  
Interrupted Time Series Analysis ◽  
Neonatal Deaths ◽  
Series Analysis ◽  
Before And After ◽  
Implementation Period ◽  
Early Neonatal Deaths

ObjectivesTo investigate if the implementation of the 2016 WHO Recommendations for a Positive Pregnancy Experience reduced perinatal mortality in a South African province. The recommendations were implemented which included increasing the number of contacts and also the content of the contacts.MethodsRetrospective interrupted time-series analysis was conducted for all women accessing a minimum of one antenatal care contact from April 2014 to September 2019 in Mpumalanga province, South Africa. Retrospective interrupted time-series analysis of province level perinatal mortality and birth data comparing the pre-implementation period (April 2014–March 2017) and post-implementation period (April 2018–September 2019). The main outcome measure was unadjusted prevalence ratio (PR) for perinatal deaths before and after implementation; interrupted time-series analyses for trends in perinatal mortality before and after implementation; stillbirth risk by gestational age; primary cause of deaths (and maternal condition) before and after implementation.ResultsOverall, there was a 5.8% absolute decrease in stillbirths after implementation of the recommendations, however this was not statistically significant (PR 0.95, 95% CI 0.90% to 1.05%; p=0.073). Fresh stillbirths decreased by 16.6% (PR 0.86, 95% CI 0.77% to 0.95%; p=0.003) while macerated stillbirths (p=0.899) and early neonatal deaths remained unchanged (p=0.499). When stratified by weight fresh stillbirths >2500 g decreased by 17.2% (PR 0.81, 95% CI 0.70% to 0.94%; p=0.007) and early neonatal deaths decreased by 12.8% (PR 0.88, 95% CI 0.77% to 0.99%; p=0.041). The interrupted time-series analysis confirmed a trend for decreasing stillbirths at 0.09/1000 births per month (−0.09, 95% CI −1.18 to 0.01; p=0.059), early neonatal deaths (−0.09, 95% CI −0.14 to 0.04; p=<0.001) and perinatal mortality (−1.18, 95% CI −0.27 to −0.09; p<0.001) in the post-implementation period. A decrease in stillbirths, early neonatal deaths or perinatal mortality was not observed in the pre-implementation period. During the period when additional antenatal care contacts were implemented (34–38 weeks), there was a decrease in stillbirths of 18.4% (risk ratio (RR) 0.82, 95% CI 0.73% to 0.91%, p=0.0003). In hypertensive disorders of pregnancy, the risk of stillbirth decreased in the post-period by 15.1% (RR 0.85; 95% CI 0.76% to 0.94%; p=0.002).ConclusionThe implementation of the 2016 WHO Recommendations for a Positive Pregnancy Experience may be an effective public health strategy to reduce stillbirths in South African provinces.

scholarly journals Impact of COVID-19 Lockdown, during the Two Waves, on Drug Use and Emergency Department Access in People with Epilepsy: An Interrupted Time-Series Analysis

2021 ◽  
Vol 18 (24) ◽  
pp. 13253
Author(s):  
Ippazio Cosimo Antonazzo ◽  
Carla Fornari ◽  
Sandy Maumus-Robert ◽  
Eleonora Cei ◽  
Olga Paoletti ◽  
...  
Keyword(s):  
Time Series ◽  
General Population ◽  
Time Series Analysis ◽  
Virus Transmission ◽  
Interrupted Time Series ◽  
Population Based ◽  
Administrative Database ◽  
Interrupted Time Series Analysis ◽  
Series Analysis ◽  
Continuous Care

Background: In 2020, during the COVID-19 pandemic, Italy implemented two national lockdowns aimed at reducing virus transmission. We assessed whether these lockdowns affected anti-seizure medication (ASM) use and epilepsy-related access to emergency departments (ED) in the general population. Methods: We performed a population-based study using the healthcare administrative database of Tuscany. We defined the weekly time series of prevalence and incidence of ASM, along with the incidence of epilepsy-related ED access from 1 January 2018 to 27 December 2020 in the general population. An interrupted time-series analysis was used to assess the effect of lockdowns on the observed outcomes. Results: Compared to pre-lockdown, we observed a relevant reduction of ASM incidence (0.65; 95% Confidence Intervals: 0.59–0.72) and ED access (0.72; 0.64–0.82), and a slight decrease of ASM prevalence (0.95; 0.94–0.96). During the post-lockdown the ASM incidence reported higher values compared to pre-lockdown, whereas ASM prevalence and ED access remained lower. Results also indicate a lower impact of the second lockdown for both ASM prevalence (0.97; 0.96–0.98) and incidence (0.89; 0.80–0.99). Conclusion: The lockdowns implemented during the COVID-19 outbreaks significantly affected ASM use and epilepsy-related ED access. The potential consequences of these phenomenon are still unknown, although an increased incidence of epilepsy-related symptoms after the first lockdown has been observed. These findings emphasize the need of ensuring continuous care of epileptic patients in stressful conditions such as the COVID-19 pandemic.

scholarly journals England's Lockdown vs. Sweden's Herd Immunity: A Comparison of the Daily New COVID-19 Cases and Related Deaths Using Comparative Interrupted Time Series Analysis

2020 ◽  
Author(s):  
Moaath Mustafa Ali ◽  
Yazan Samhouri ◽  
Marwa Sabha ◽  
Lynna Alnimer
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Herd Immunity ◽  
Interrupted Time Series ◽  
Interrupted Time Series Analysis ◽  
Post Intervention ◽  
Series Analysis ◽  
Before And After ◽  
Rebound Increase ◽  
Related Mortality

Background: There is a lack of empirical evidence that lockdowns decrease daily cases of COVID-19 and related mortality compared to herd immunity. England implemented a delayed lockdown on March 23, 2020, but Sweden did not. We aim to examine the effect of lockdown on daily COVID-19 cases and related deaths during the first 100 days post-lockdown. Methods: We compared daily cases of COVID-19 infection and related mortality in England and Sweden before and after lockdown intervention using a comparative-interrupted time series analysis. The period included was from COVID-19 pandemic onset till June 30, 2020. Results: The adjusted-rate of daily COVID-19 infections was eight cases/10,000,000 person higher in England than Sweden before lockdown order (95% CI: 2-14, P=0.01). On the day of intervention (lagged lockdown), England had 693 more COVID-19 cases/10,000,000 person compared to Sweden (95% CI: 467-920, P<0.001). Compared to the pre-intervention period, the adjusted daily confirmed cases rate decreased by 19 cases/ 10,000,000 person compared to Sweden (95% CI: 13-26, P<0.001). There was a rate excess of 1.5 daily deaths/ 10,000,000 person in England compared to Sweden pre-intervention (95% CI: 1-2, P<0.001). The increased mortality rate resulted in 50 excess deaths/ 10,000,000 person related to COVID-19 in England compared to Sweden on the day of lockdown (95% CI: 30-71, P<0.001). Post-intervention, the rate of daily deaths in England decreased by two deaths/ 10,000,000 person compared to Sweden (95% CI: 1-3, P<0.001). During phases one and two of lockdown lifting in England, there was no rebound increase in daily cases or deaths compared to Sweden. Conclusion: The lockdown order implemented in England on March 23, 2020, effectively decreased the daily new cases rate and related mortality compared to Sweden. There was no short-term increase in COVID-19 cases and related-deaths after the phases one and two of the lifting of restrictions in England compared to Sweden. This study provides empirical, comparative evidence that lockdowns slow the spread of COVID-19 in communities compared to herd immunity.

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