. Author manuscript; available in PMC: 2018 Nov 1.

Published in final edited form as: J Biomed Inform. 2017 May 22;75 Suppl:S105–S111. doi: 10.1016/j.jbi.2017.05.015

Table 5.

Average MAE of GBT with or without verbose-answer features with ten rounds of 5-fold cross-validation

Resample Size	Features

	Short-answer features	Short-answer + verbose-answer features
0	0.617	0.445^***
250	0.514	0.461^**
500	0.548	0.432^***
1000	0.539	0.415^***
2000	0.549	0.460^***

Note: Significant at the:

^***

0.1%,

^**

1%, or

5% level