TABLE 1.

Descriptive statistics for research group.

Variable	Frequency (f)	Percentage (%)
Sex
Female	290	75.5
Male	92	24.0
Other	2	0.5
Sum	384
Grade
Preparatory	37	9.6
1st. grade	32	8.3
2nd. grade	84	21.9
3rd. gradef	138	35.9
4th. grade	93	24.2
Sum	384
Number of people living together
0–4	347	90.4
5–7	35	9.2
8 and above	2	0.6
Sum	384
Study space
Yes	116	30.2
No	268	69.8
Sum	384