Table 1.

Demographic and clinical characteristics of participants (biofeedback and control condition) at baseline and number of sessions

	Biofeedback			Control			Test statistica	P
	N	Median	Min–max	N	Median	Min–max
Age, years	4	46.5	25–57	4	43.0	28–53	U = 7.00 Z = −.29	.89
Female (n, %)	4	4 (100 %)		4	2 (50 %)		χ 2 = 2.67 df = 1	.43b
IES-R	4	45	28–62	4	41.5	21–73	U = 7.00 Z = −.29	.89
Sessions completed	4	7.5	6–11	4	8.0	5–18	U = 8.00 Z = .00	1.00

^aMann–Whitney test was used for continuous variables. Chi square tests were used for categorical variables

^bFisher’s exact test