Table 5.

Effects reported in therapy randomized controlled trials of acceptable quality of electronic symptom reporting^a.

Article	Primary outcome	Intervention hypothesis relative to control	Number at randomizationb			Within-group pre–post changeb			Between-group pre–post changeb,c		Hypothesis confirmed?
			C	I1	I2	C	I1	I2	C-I1	C-I2
Wagner et al [65]	Intrusion measured by the Impact of Event Scale	Superior	26	29	NAd	3.77	11.5	NA	–7.73 P < .1	NA	Yese

^a Articles were identified in a comprehensive search in Medline, EMBASE, PsycINFO, Cochrane Central Register of Controlled Trials, and IEEE Xplore from 1990 to November 2011, and were published in the time period 2002–2011.

^b C = control group, I1 = intervention group 1, I2 = intervention group 2.

^c P values for difference between groups.

^d Not applicable.

^e Authors considered P < 0.1 to be statistically significant.