间断时间序列分析(Interrupted Time Series Analysis,ITS)其基本思想为通过连续收集干预实施前后多个时间点上的结局数据,比较结局在干预前后水平和趋势的变化,从而评估干预措施对结局产生的影响。ITS 的优势在于即使未设置对照也能通过对干预前后多个观测时间点数据的分析,控制并排除由历史或其他未测量混杂引起的长期趋势变化...
中断时间序列分析（Interrupted Time Series Analysis, ITSA），是一种强大的统计工具，无需对照组，仅依赖时间序列数据即可进行大规模干预效应评估。其核心要素包括：明确的干预节点、干预前后多次观测的数据点以及结果变量与时间的线性关系。通过分段回归，ITSA模型解析为四个关键部分：截距、趋势、即时效应和...
Linden A. Conducting interrupted time-series analysis for single- and multiple-group comparisons. STATA J 2015;15(2):480e500.Linden A. Conducting interrupted time-series analysis for single-and multiple-group comparisons. Stata J 2015;15:480-500....
XTITSA: Stata module for performing interrupted time-series analysis for panel data 来自 ideas.repec.org 喜欢 0 阅读量: 2525 作者: A Linden 摘要: xtitsa performs an interrupted time series analysis (ITSA) when individual-level data are available for analysis (panel data). xtitsa estimates ...
Linden A. Conducting interrupted time-series Analysis for single- and multiple-group comparisons. Stata J Promot Commun Stat Stata. 2015;15(2):480–500. Article Google Scholar Dong C, Liu J, Mi J. Information-Driven Integrated Healthcare: an analysis of the Cooperation Strategy of County Me...
The data as well as R code and Stata code for the analysis are provided as supplementary information. The data, which consist of monthly rotavirus-positive counts (mean = 23, range: 4–101) and rotavirus-negative counts (mean = 34, range: 14–83), are plotted on the log-...
Linden A. Conducting interrupted time-series analysis for single-and multiple-group comparisons. Stata J. 2015;15(2):480–500. Article Google Scholar Bernal JL, Cummins S, Gasparrini A. Interrupted time series regression for the evaluation of public health interventions: a tutorial. Int J Epide...
The data were categorized into five one-year age groups and analyzed using interrupted time series analysis with Stata/SE 15 software. Results The age-group specific HFMD incidence rate (1/100 000) during the two periods (January 2015 – July 2016 and August 2016 – December 2017) before ...
3. Statistical Analysis Statistical analysis was carried out using StataCorp 2019 STATA Statistical Software: release 16 (StataCorp LLC, College Station, TX, USA). Initially, the findings of all patients in the two groups were evaluated. Dichotomous data and counts were presented in frequencies, ...
stata中Q检验和BG检验的命令虽然能够对高阶自相关进行检验,但是并没有给出具体哪一阶存在自相关。以BG检验lag(3)为例,卡方值等于16.319,p值小于0.05。说明前三阶中至少有一阶存在自相关,但具体是哪一阶或哪几阶存在自相关便不得而知了。actest命令对此进行了优化: ...