To interpret each principal component, you must compute the correlations between the original values for each attribute (in Input) and each principal component (in Output (Table of Principal Components)).
The first step is to create a view that shows both the principal components and the patient attribute values, using this SQL statement:
CREATE VIEW v_pca_health_corr_input AS SELECT PC.pid, PC.pca_1, PC.pca_2, PC.pca_3, SR.age, SR.bmi, SR.bloodpressure, SR.glucose, SR.strokes, SR.cigarettes, SR.insulin, SR.hdl FROM pca_health_pc PC JOIN patient_pca_input SR ON (SR.pid = PC.pid);