Univariate comparison revealed five variables in which the group with CHD differed significantly from the group without CHD: age, sex, smoking status, log triglyceride, and log lipoprotein(a). No significant differences were observed between the two groups in serum total cholesterol, HDL cholesterol, or LDL cholesterol. Stepwise multiple-discriminant analysis of only the variables for which differences were significant was carried out post hoc to investigate the independence of these risk factors in predicting CHD among patients with familial hypercholesterolemia (Table 3).
Note the P values for Total cholesterol, LDL-C & HDL-C are all >0.5 (no statistical significance). However, that of TG is significant! Check the link below if you want to confirm what I mentioned above:
www.nejm.org/doi/full/10.1056/NEJM199005243222104