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. Author manuscript; available in PMC: 2014 Jun 8.
Published in final edited form as: J Clin Exp Neuropsychol. 2013 Jun 8;35(6):608–616. doi: 10.1080/13803395.2013.804035

Table 1.

Dx < 6 yrs are children diagnosed before age 6, Dx > 6 yrs are children diagnosed after age 6

MPS IH MPS IIIA
Dx < 6 yrs
MPS IIIA
Dx > 6 yrs
N, male:female 3:5 17:7 3:3
Mean age (SD) at test (months) 52 (17) 55 (22) 149 (54)
Cognitive function – DQ 85 (14.7) 51 (26.5) 25 (19.9)
Cognitive function – Age
Equivalent in months
41 (14.4) 24 (12.1) 33 (21.8)