I am working to publish some hierarchical clustering indicating phenotypes in a disease population. I log transformed and min-max normalised my input vairables, and used Ward to identify clusters.
In order to select k (where to cut the tree), I used 3 statistical methods - GAP, elbow and silhouette, and selected the "majority vote" - in this case 5.
Following this analysis (and halfway through writing the publicaiton) I came across the hopkins statistic for which my data gave a very low result - 0.2 - indicating non-clusterable data.
I am slightly confused given the results of the 3 previously used clustering stats, and not sure if I should report this value or not..
Any feedback is welcome!