Table 2.

Comparison of accuracies of the different algorithms.

Algorithm	Accuracy (95% CI), %	p value
K-means	81.7 (73.1–88.4)	0.02
Hierarchical clustering analysis	78.9 (70.0–86.1)
Model-based clustering	91.7 (84.9–96.2)

Model-based clustering showed the highest accuracy.