. Author manuscript; available in PMC: 2015 Jan 9.

Published in final edited form as: J Neuropathol Exp Neurol. 2014 Feb;73(2):115–122. doi: 10.1097/NEN.0000000000000034

Table 4.

Homovanillic Acid (HVA) comparisons by diagnosis, adjusting for post-conceptional age (PCA) and postmortem interval (PMI)

	HVA
	Adjusted Mean (Standard Error) in pmol/L	P-value of Pair-wise Comparisons between Groups of Interest
SIDS cases, n=52	1557.7 (177.4)	SIDS vs. AC (0.004) SIDS vs. CC (0.963) SIDS vs. AA (0.989) SIDS vs. RSIDS (0.485) SIDS vs. UND (0.729) AC vs. CC (0.923) AC vs. AA (0.019)
Acute Controls (AC), n=9	3305.2 (423.0)
Chronic Controls (CC), n=2	2321.9 (915.6)
Acute Asphyxia (AA), n=8	1245.9 (462.4)
Resuscitated SIDS (RSIDS), n=5	2755.1 (645.3)
Undetermined cases(UND), n=10	914.2 (424.0)

Legend: A Tukey-Kramer adjustment was used to account for the multiple comparisons. The p-values are presented in the brackets. There was no difference in HVA levels between the SIDS and non-SIDS (AC, CC, and AA groups combined) (p-value=0.130). Abbreviation: vs., versus.