Table 2.

Results of the primary outcome measure (overall PSQ score) from baseline to 3-month follow-up for complete-case and intention-to-treat analyses.

Outcome		Intervention, mean (SD)	Control, mean (SD)	Cronbach alpha	Difference
					Mean (95% CI)	P a
Complete case		n=25	n=49
	Baseline	55.5 (18.8)	56.8 (18.0)	.86	–1.3 (–10.2, –7.7)	.78
	Follow-up	42.5 (19.7)	43.1 (19.4)	.91	–0.7 (–10.2, 8.9)	.89
	Difference	–13.1 (13.9)	–13.7 (14.8)		–0.6 (–7.7, 6.5)	.34
Intention-to-treat		n=40	n=53
	Baseline	55.0 (19.2)	56.2 (17.4)	.86	–1.2 (–8.8, 6.4)	.76
	Follow-up	46.9 (20.5)	43.6 (18.7)	.90	3.3 (–4.8, 11.4)	.42
	Difference	–8.2 (12.7)	–12.6 (14.7)		–4.5 (–10.2, 1.3)	.13

^a P values are from Student t test.