Table 3. Correlation analysis and intergroup comparisons.

	Gross Motor Function mean ± SD				Presence of medical care mean ± SD				Children							Parent
	Low	High			Yes	No			Age		Height		Weight			Age
Number of items	2.1	5.1 ± 1.6	*		3.3 ± 1.9	4.4 ± 2.1	**		−0.01		0.29	**	0.36	**		0.09
Frequency	2.6 ± 1.0	3.5 ± 1.0	**		2.5 ± 1.2	2.9 ± 0.8	**		−0.21	*	−0.10		0.01			−0.21	*
Involvement	3.6 ± 1.2	3.5 ± 0.9			3.3 ± 1.4	3.8 ± 0.9			0.05		0.18	*	0.23	*		0.08

The Mann-Whitney U-test was used to perform comparisons between groups with high and low gross motor function and between groups with and without medical care.

Spearman rank correlation coefficients with PEM-CY are listed under age, height, and weight of the child and parental age.

*p<0.05, **p<0.01.

PEM-CY: Participation and Environment Measure for Children and Youth.