Segmented Linear Regression Models for Assessing Change in Retrospective Studies in Healthcare

Table 1

A tabular illustration of the results of F-tests between models.

	Plateau	Line	Line⟷plateau
Line	pline/plateau
Line⟷plateau	pline-plateau/plateau	pline-plateau/line
Line-line	pline-line/plateau	pline-line/line	pline-line/line-plateau

The best model is the one that has a row of uninterrupted significant values () stretching furthest to the right. In the case of a tie, the lower-order model is preferred. If no significant values feature in the table, the plateau is chosen as the best model.