Time-Series Analysis
Similar to the procedure of a recent analysis,17we then conducted time-series analyses to explore any time-based trends in the number of articles published per year for each coded category.
A preliminary visual inspection of all the time-series plots identified outstanding trends for further investigation. We used the Chow test to test for the presence of structural break points in time series data.18Segmented regression of interrupted time series analysis with AR(2) residuals were used to examine the sudden and gradual change in the proportions of publications of interest at given time points.19