Table 2.

Percentage of intervals with inappropriate behaviors per phase and effect size measures between phases

	BL	INT	MTN	BL to INT	BL to INT
Classroom	M (SD) Range	M (SD) Range	M (SD) Range	PEM	PEM
Classroom A	23.8% (11.1) 13%–33%	15.4% (7.0) 6%–31%	11.4% (5.4) 1%–15%	.85	1
Classroom B	80.2% (6.6) 71%–90%	70.2% (16.9) 43%–90%	50.3% (15.2) 33%–75%	.67	1
Classroom C	68.2% (9.7) 55%–81%	45.3% (9.1) 30%–53%	29.7% (4.2) 23%–36%	1	1

BL baseline-phase data; INT intervention-phase data; MTN maintenance-phase data; PEM percentage of data points exceeding the median