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Fig. 9 | BMC Medical Research Methodology

Fig. 9

From: Comparison of six statistical methods for interrupted time series studies: empirical evaluation of 190 published series

Fig. 9

Autocorrelation coefficient estimates. Scatterplot showing the autocorrelation estimate on the vertical axis and length of data series on the (log scale) horizontal axis. LOESS lines are overlaid to show trends in autocorrelation coefficient with data series length. Dashed lines on the left show the distribution of the estimates with overlaid symbols showing the median value. Abbreviations: ARIMA, autoregressive integrated moving average; PW, Prais-Winsten; REML, restricted maximum likelihood

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BMC Medical Research Methodology

ISSN: 1471-2288

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