Table 4. Power and effect size for the default and nine alternative designs used to investigate the effect of gradually emerging effects.

	Portion of intervention measurements at which the effect is emerging
	0		¼		⅓		½
	Power	ES*	Power	ES	Power	ES	Power	ES
default	.97	1.00	.40	1.01	.26	0.89	.15	0.77
k = 2	.91	1.00	.21	1.01	.15	0.89	.10	0.77
k = 4	.99	1.00	.58	1.01	.39	0.89	.21	0.77
Autocorrelation = .5	.80	1.00	.25	1.01	.18	0.89	.09	0.76
Nr. Measurements = 30	.74	1.00	.17	1.00	.13	0.88	.12	0.77
#obsB = #obsI	.94	1.00	.70	1.02	.48	0.90	.26	0.78
d = .3	.29	0.30	.12	0.30	.09	0.27	.07	0.23
d = .6	.70	0.60	.22	0.61	.16	0.53	.10	0.46
sdB = 2sdI	.96	1.00	.37	1.01	.24	0.89	.14	0.77
2sdB = sdI	.96	1.00	.38	1.01	.26	0.89	.07	0.65

*ES = effect-size