Thus, if a decreasing trend in suicide mortality has already changed before an intervention, ITSA may overestimate an increasing trend or positive discontinuity in fluctuations after the intervention. 13 JPRA (also known as the segmented regression model) fits the simplest joinpoint model that the trend data allow and identifies significant points where trends change. 57 JPRA is used to analyze the number of connection points by calculating the sum of residual error squares between the fitted value and the true value.
← all excerpts
Suicide mortality rates in Japan before and beyond the COVID-19 pandemic era.
1
—
—