Table 2. Intention-to-treat analysis: mean and s.d. values and outcome differences between both groups at baseline and at third and sixth months according to the general linear model.

	Baseline			Thirrd month					Sixth month
Outcome by group	No. of patients	Mean	s.d.	No. of patients	Mean	s.d.	Difference between groups (95% CI)	P-value	No. of patients	Mean	s.d.	Difference between groups (95% CI)	P-value
Anxiety
Walking group	58	4.59	3.46	50	4.59	2.63	−0.63	0.379	44	3.55	3.34	−1.03	0.168
Usual-care groupa	58	3.50	3.91	51	5.22	4.01	(−2.04; 0.78)		47	4.57	3.96	(−2.49;0.43)
Depression
Walking group	58	5.67	3.57	50	4.92	3.14	−2.45	0.001*	44	4.41	3.79	−1.68	0.035*
Usual-care groupa	58	4.74	3.73	51	7.37	4.52	(−3.95; −0.95)		47	6.09	4.11	(−3.23; −0.12)
Symptoms
Walking group	58	1.93	1.45	50	1.50	1.27	−0.58	0.053	44	1.54	1.68	−0.21	0.512
Usual-care groupa	58	2.04	1.48	51	2.08	1.65	(−1.18; 0.01)		47	1.74	1.55	(−0.82; 0.41)

Abbreviation: CI=confidence interval.

*P <0.05.

^aUsual-care group is reference group.