Table 6 Mean Rate and Range of Social Initiation Behavior (%)

	Baseline(range)	Intervention(range)	Maintenance(range)
Child 1	0	44.9 (33.3~56.6)	46.6 (43.3~50.0)
Child 2	0	23.0 (6.6~38.3)	28.3 (25.0~31.6)