Table 2 .

Cluster-randomized Trial Data

	Intervention Group		Control Group
	No. of Conforming Requests/ Total	%	No. of Conforming Requests/ Total	%
	20/20	100	7/7	100
	7/7	100	33/37	89
	15/16	94	32/38	84
	28/31	90	23/28	82
	18/20	90	16/20	80
	21/24	88	15/19	79
	6/7	86	7/9	78
	5/6	83	19/25	76
	25/30	83	90/120	75
	53/66	80	64/88	73
	4/5	80	15/22	68
	33/43	77	52/76	68
	32/43	74	14/21	67
	16/23	70	83/126	66
	44/64	69	14/22	64
	4/6	67	21/34	62
	10/18	56	4/10	40
Mean (SD)	–	81.5	–	73.6
	–	12.0		13.1
Total*	341/429	79.5	509/702	72.5

Source: Kerry SM, Bland JM.³⁷ © 1998 BMJ Publishing Group. Used with permission.

*The percentage conforming based on the raw total does not equal the mean of the percentage conforming for each cluster, because clusters are of unequal size.