Using the linear trend model also allows testing trends before and after particular changepoints. Options are (1) to test trends before and after a priori selected changepoints or (2) to let TRIM ...

The final part, "Linear Trend," describes the predictor. Notice that the model you have specified consists only of the time index regressor _LINEAR_ and an intercept. Although this window is normally ...

The model is a linear time trend applied to the logarithms of the dependent series. Thus, specifying an exponential trend is equivalent to specifying the log series transformation and a linear time ...

A simple approximate formula for sample sizes for detecting a linear trend in proportions is derived. The formulas for both the uncorrected and corrected Cochran-Armitage test are given.