. Author manuscript; available in PMC: 2009 Jul 19.

Published in final edited form as: Psychol Methods. 2009 Mar;14(1):43–53. doi: 10.1037/a0014699

Table 1.

Mock Data Used for Analysis of Different Clinical Trial Designs

Subj ID	Tx	T1	T2	T3	T4	T4 - T1
Control Group
101.00	−.50	3.00	5.00	5.00	7.00	4.00
102.00	−.50	4.00	4.00	6.00	6.00	2.00
103.00	−.50	4.00	5.00	7.00	8.00	4.00
104.00	−.50	5.00	6.00	6.00	8.00	3.00
105.00	−.50	5.00	6.00	7.00	8.00	3.00
106.00	−.50	5.00	7.00	7.00	7.00	2.00
107.00	−.50	5.00	6.00	8.00	8.00	3.00
108.00	−.50	6.00	6.00	7.00	9.00	3.00
109.00	−.50	6.00	8.00	9.00	10.00	4.00
110.00	−.50	7.00	7.00	8.00	9.00	2.00
Mean		5.00	6.00	7.00	8 .00	3.00
Intervention Group
		T1	T2	T3	T4	T4 - T1
111.00	.50	3.00	5.00	7.00	9.00	6.00
112.00	.50	4.00	7.00	9.00	11.00	7.00
113.00	.50	4.00	6.00	8.00	11.00	7.00
114.00	.50	5.00	7.00	9.00	10.00	5.00
115.00	.50	5.00	6.00	9.00	11.00	6.00
116.00	.50	5.00	7.00	10.00	10.00	5.00
117.00	.50	5.00	8.00	8.00	11.00	6.00
118.00	.50	6.00	7.00	9.00	12.00	6.00
119.00	.50	6.00	9.00	11.00	13.00	7.00
120.00	.50	7.00	8.00	10.00	12.00	5.00
Mean		5.00	7.00	9.00	11.00	6.00

Note. The standard deviation associated with each mean is 1.1547. Subj ID = subject number, Tx = treatment code (−.50 = control, .50 = treatment), T4 - T1 = change (gain) score.