Table 3.

Summary of training and testing data sets.

Data set	Records, n (%)
	Low-severity group	High-severity group
Training (n=4480)	4260 (95.1)	220 (4.9)
Testing (n=1121)	1070 (95.5)	51 (4.5)
Total (N=5601)	5330 (95.2)	271 (4.8)