Table 1.

The number of selected CpG sites and the performance of four classifiers for DNA methylation profiles.

		Normal	Invasiveness
MRMD	Number of CpG	14	134
	Training Accuracy	97%	93.6%
	Testing Accuracy	96.9%	549/217
mRMR	Number of CpG	12	5
	Training Accuracy	99%	100%
	Testing Accuracy	96.9%	611/165
PCA	Number of CpG	8	3
	Training Accuracy	99%	95%
	Testing Accuracy	91%	454/312
FA	Number of CpG	80	60
	Training Accuracy	99%	93.3%
	Testing Accuracy	94.8%	664/102