Table 1.

Distribution of the sample by sociodemographic and professional variables.

	n	%
Sex
Male	164	32.8
Female	336	67.2
Age
From 25 to 35 years	49	9.8
From 36 to 45 years	136	27.2
From 46 to 55 years	202	40.4
Over 55 years	113	22.6
Education
Diploma	12	2.4
Undergraduate degree	421	84.2
Master's degree	65	13.0
Ph.D.	2	0.4
Years of experience
5 years or less	61	12.2
From 6 to 10 years	71	14.2
From 11 to 20 years	169	33.8
From 21 to 30 years	125	25.0
Over 30	74	14.8
Type of contract
Permanent	362	72.4
Temporary	138	27.6
Teaching high school
7th grade	244	48.8
8th grade	256	51.2