Table 1.

Prompting frequency by intensity category.

Setting	Prompting frequency (# of prompts per day)	n	Compliance (95% CI)	R 2 analog	Q residual a	I2 (%)b
Clinical	2-3 times	11	73.47 (67.45-78.73)d	0.74	14.97 (df=12)	19.82
	4-5 times	4	66.94 (53.50-78.09)e
	6+ times	2	89.28 (78.83-94.90)c
Nonclinical	2-3 times	6	91.73 (85.48-95.44)g	0.44	38.27 (df=18) P=.004	52.96
	4-5 times	13	74.42 (59.37-85.29)e
	6+ times	5	75.00 (59.21-86.12)f

^aQ_residual: test for residual between-study variance (not explained by the moderator) against zero.

^cI²: percentage of the residual variability that is due to heterogeneity rather than sampling error.

^cP=.007, compared to study with a prompting frequency of 2-3 times.

^dP=.007, compared to study with a prompting frequency of 6+ times.

^dP=.002, compared to study with a prompting frequency of 6+ times.

^eP<.001, compared to study with a prompting frequency of 2-3 times.

^fP<.001, compared to study with a prompting frequency of 2-3 times.

^dP<.001, compared to study with a prompting frequency of 6+ times.