Table 1.

Data of term and premature infants: sex, gestational age, age at test, and gender homogeneity of groups.

		Term	Preterm
Female a	N	19	18
	%	52,8	60
Male a	N	17	12
	%	47,2	40
Age at test	Mean	42,5	40,3
(in weeks)	SD b	1,4	2,6
	Median	42,4	39,5
Gestational age	Mean	39,2	35,7
(in weeks)	SD b	1,1	1
	Median	39,3	36

^aChi-square test p = 0.5561

^bStandard deviation