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This article shows how to use SAS to fit a growth curve to data. Growth curves model the evolution of a quantity over time. Examples include population growth, the height of a child, and the growth of a tumor cell. This article focuses on using PROC NLIN to estimate the
The SAS INFILE statement can read multiple text files in a single DATA step. Use file name wildcards (like * and ?) and a special FILENAME= option to keep track of which records come from which files.
