TABLE 1.

Sociodemographic characteristics of the sample.

	Control group	Experimental group
	(n = 55)	(n = 49)
Sex
Female	8 (15%)	6 (12%)
Male	47 (85%)	43 (88%)
Religion
Catholic	37 (67%)	31 (63%)
Muslim	8 (15%)	3 (6%)
None	10 (18%)	15 (31%)
Attendance rate
Has not attended class	–	–
Less than 25%	–	–
Between 25–50%	–	–
Between 50–75%	3 (6%)	2 (4%)
Between 75–90%	15 (27%)	6 (12%)
More than 90%	37 (67%)	41 (84%)
Previous experience of volunteering or SL
With previous experience	19 (35%)	11 (22%)
No previous experience	36 (65%)	38 (78%)