. Author manuscript; available in PMC: 2009 Jul 24.

Published in final edited form as: Artif Intell Med. 2009 Jan 21;46(3):217–231. doi: 10.1016/j.artmed.2008.12.004

Table 2.

Correlation of predictors (a) MLP and (b) PNN

		SBP_max	DBP_avg	DBP_krt	RAP_skw	pH_skw	pCO_2max	pCO_2avg
(a) MLP
SBP_max	Pearson correlation	1	.545^**	-.019	.064	-.067	.056	.284^**
	Sig. (two-tailed)		.000	.847	.522	.502	.571	.004
DBP_avg	Pearson correlation		1	-.057	.199^*	-.158	-.236^*	-.102
	Sig. (two-tailed)			.570	.044	.111	.016	.305
DBP_krt	Pearson correlation			1	-.111	-.151	.120	.026
	Sig. (two-tailed)				.265	.128	.226	.797
RAP_skw	Pearson correlation		Symmetric		1	.019	-.083	-.030
	Sig. (two-tailed)					.848	.407	.761
pH_skw	Pearson correlation					1	-.033	.108
	Sig. (two-tailed)						.739	.278
pCO_2max	Pearson correlation						1	.731^**
	Sig. (two-tailed)							.000
pCO_2avg	Pearson correlation							1
	Sig. (two-tailed)
		HR_adm	SBP_max	SBP_avg	DBP_avg	pCO_2adm	pCO_2min	pCO_2avg

(b) PNN
HR_adm	Pearson correlation	1	.200^*	.161	.099	.180	.027	-.073
	Sig. (two-tailed)		.043	.104	.322	.069	.788	.463
SBP_max	Pearson correlation		1	.885^**	.545^**	.178	.358^**	.284^**
	Sig. (two-tailed)			.000	.000	.073	.000	.004
SBP_avg	Pearson correlation			1	.538^**	.193	.348^**	.233^*
	Sig. (two-tailed)				.000	.051	.000	.018
DBP_avg	Pearson correlation		Symmetric		1	.181	.132	-.102
	Sig. (two-tailed)					.068	.183	.305
pCO_2adm	Pearson correlation					1	.087	-.098
	Sig. (two-tailed)						.381	.323
pCO_2min	Pearson correlation						1	.621^**
	Sig. (two-tailed)							.000
pCO_2avg	Pearson correlation							1
	Sig. (two-tailed)

Significance at 0.05 level (p < 0.05).

^**

Significance at 0.01 level (p < 0.01).