Table 3.

Frequency of Participation in Physical Activities and Number of Regular Activities^* among TD Youth and Youth with ID^**

		TD Mean	ID Mean	Mean Difference (95% CI)	p-value
Frequency of participation (times/month)
	Overall**a	37.8	47.6	−9.8 (−20.8 to 1.2)	0.08
	Malesb	45.3	45.4	−0.1 (−17.1 to 16.9)	0.99
	Femalesc	28.2	47.1	−18.9 (−32.4 to −5.3)	0.008
Number of regular activities
	Overall**a	6.3	7.6	−1.3 (−2.8 to 0.05)	0.06
	Malesb	7.0	7.1	−0.06 (−2.1 to 1.9)	0.94
	Femalesc	5.2	7.8	−2.6 (−4.6 to −0.6)	0.01

^*Activities performed ≥12 times/year

^**Overall adjusted for age and sex; sex-stratified adjusted for age

^an=59 TD, 37 ID

^bn=36 TD, 17 ID

^cn=23 TD, 20 ID