Table 4: Patients’ evaluation (ratings 1 to 5, means ± SD) of the preliminary group session.

Grading Test (n=1395) Mean (X/5) ± DS
Clarity of explanation 4.8±0.6
Grade of interest 4.6±0.7
Quality of the teaching materials 4.4±0.9
Adequacy of time 4.6±0.7
Acquired knowledge level 4.4±0.9