Introduction to Advanced Programming in STATA
Erick L. Suárez, Cynthia M. Pérez, Graciela M. Nogueras, Camille Moreno-Gorrín · 2016
The expression Ln(Ti) denotes the natural logarithm of Ti under the expression [iii] of the Poisson regression model, which is included as a predictor variable with a coefficient or parameter equal to 1. This type of predictor is identified as an offset and has a fixed parameter.