Table 5.

Descriptive statistics for the Zung Self-Rating Anxiety Scale (SAS) and changes compared with baseline (V1) for the evaluation visits and patient groups

	Paired differences					t	df	Sig. (2-tailed)
	Mean	Std. deviation	Std. error mean	95% confidence interval of differences
				Lower	Upper
Group 1
Pair 1
Zung after 1 month, V1	−36.131	3.205	.495	−37.130	−35.132	−73.048	41	.000
Pair 2
Zung after 6 months, V1	−38.214	4.049	.625	−39.476	−36.952	−61.158	41	.000
Group 2
Pair 1
Zung after 1 month, V1	−17.308	7.508	1.202	−19.742	−14.874	−14.395	38	.000
Pair 2
Zung after 6 months, V1	−16.154	7.562	1.211	−18.605	−13.702	−13.340	38	.000