Table 2. Comparing the clusters obtained with MHMM, PAM, CLARA and FCM.

	MHMM	PAM	Clara	FCM
Size
Cluster 1 (“brief”)	528	267	267	142
Cluster 2 (“intermediate”)	211	254	244	346
Cluster 3 (“sustained”)	49	267	277	300
Silhouette index
Min.	-0.568	-0.502	-0.497	-0.418
1st Quartile	0.014	0.01	0.01	0.065
Median	0.326	0.147	0.145	0.244
Mean	0.216	0.131	0.132	0.212
3rd Quartile	0.466	0.301	0.307	0.379
Max.	0.507	0.422	0.437	0.504
Dunn index	0.019	0.012	0.014	0.014