Additional file 1: of Quantifying traditional Chinese medicine patterns using modern test theory: an example of functional constipation

S1. Longitudinal data used for the validation of the tool. With respect to variable names, T1, T2, and T3 prefix indicate baseline, 1st follow-up, and 2nd follow-up, respectively. I1 to I10 suffix indicate number of item. (XLSX 32 kb)