Results 261 to 270 of about 75,006 (300)
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Universal HIV screening in the emergency department: an interrupted time series analysis
AIDS, 2022We performed a calendar-matched, 12-month, before (November 27, 2017 to November 26, 2018) and after (November 27, 2018 to November 26, 2019) study, to assess the utility of an emergency department-based HIV screening program. There were 710 and 14 335 patients screened for HIV during the pre and post-best practice alert (BPA)
James S, Ford +9 more
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Computer Programs for Interrupted Time Series Analysis: II A Quantitative Evaluation
Multivariate Behavioral Research, 1990Interrupted time series analysis is a method of analysis for longitudinal experiments involving a sequence of observations on a single dependent variable before and after an intervention. The presence of dependency in the data necessitates the use of computer programs for data analysis. Five recently developed programs are evaluated: BMDP (Dixon, 1985),
J W, Harrop, W F, Velicer
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Multivariate Behavioral Research, 2014
Many data structures, particularly time series data, are naturally seasonal, cyclical, or otherwise circular. Past graphical methods for time series have focused on linear plots. In this article, we move graphical analysis onto the circle. We focus on 2 particular methods, one old and one new.
Joseph Lee, Rodgers +2 more
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Many data structures, particularly time series data, are naturally seasonal, cyclical, or otherwise circular. Past graphical methods for time series have focused on linear plots. In this article, we move graphical analysis onto the circle. We focus on 2 particular methods, one old and one new.
Joseph Lee, Rodgers +2 more
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Improving the Rate of Preschool Vision Screening: An Interrupted Time-Series Analysis
Pediatrics, 2011OBJECTIVE:To implement a 6-month quality improvement project in 13 clinics in North Carolina to improve vision screening rates for children 3 through 5 years of age.METHODS:We trained each clinic in approaches to vision screening and selected champions to provide feedback based on a 3-month baseline chart audit of up to 90 charts in each clinic and ...
Alex R, Kemper +4 more
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Interrupted Time Series Analysis for Policy Evaluation
JAMA Internal MedicineThis Guide to Statistics and Methods examines the population-level associations of guidelines for the use of doxycycline postexposure prophylaxis with sexually transmitted infection incidence.
Andrea L. Schaffer +2 more
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Challenges to validity in single‐group interrupted time series analysis
Journal of Evaluation in Clinical Practice, 2016AbstractRationale, aims and objectivesSingle‐group interrupted time series analysis (ITSA) is a popular evaluation methodology in which a single unit of observation is studied; the outcome variable is serially ordered as a time series, and the intervention is expected to “interrupt” the level and/or trend of the time series, subsequent to its ...
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A matching framework to improve causal inference in interrupted time‐series analysis
Journal of Evaluation in Clinical Practice, 2017AbstractRationale, aims, and objectivesInterrupted time‐series analysis (ITSA) is a popular evaluation methodology in which a single treatment unit's outcome is studied over time and the intervention is expected to “interrupt” the level and/or trend of the outcome, subsequent to its introduction. When ITSA is implemented without a comparison group, the
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[Design and analysis of two groups interrupt time series].
Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi, 2019Interrupted time-series (ITS) is a quasi-experimental design which evaluates the effectiveness of an intervention based on time-series outcome variables. Compared with the single group of ITS, the two groups of ITS can better control the influence of pre-interventional confounding factors and evaluate the effectiveness of the intervention.
Y, Li +5 more
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Robust testing of level changes in interrupted time-series analysis
Journal of Statistical Computation and Simulation, 2006Ramsey and Ramsey [Ramsey, P.P. and Ramsey, P.H., 2003, Comparing lease-squares lines for testing level changes in interrupted time-series analysis. Journal of Statistical Computation and Simulation, 73, 31–44.] have shown that a composite procedure (CP) can provide accurate tests of level changes in interrupted time-series analysis.
Patricia P. Ramsey, Philip H. Ramsey
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Openness and censorship in the European Union: An interrupted time series analysis
European Union Politics, 2014This study examines transparency and censorship in the Council of Ministers of the European Union from 1999 to 2009. We measure transparency by considering the timeliness of record release and the levels of censorship applied to records when (and if) they are released.
Cross, James P, Bølstad, Jørgen
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