Auditory and visual characteristics Population 16 years old and over by sex, level of studies of main breadwinner and if they have difficulty for seeing. Units: thousands of persons and percentages ;Total;Yes difficulty;No difficulty; ABSOLUTE FIGURES; Both genders; Total;35,361.4;1,626.4;33,735.0; Illiterates and without studies;4,976.3;572.9;4,403.4; Primary and Secondary Education of first cycle;18,429.7;750.3;17,679.4; Secondary education of second cycle and post-secundary;6,796.7;165.8;6,630.9; University;5,158.6;137.4;5,021.2; Males; Total;17,249.8;571.7;16,678.2; Illiterates and without studies;2,290.4;222.2;2,068.2; Primary and Secondary Education of first cycle;9,025.4;261.7;8,763.7; Secondary education of second cycle and post-secundary;3,488.9;56.2;3,432.6; University;2,445.1;31.5;2,413.6; Females; Total;18,111.6;1,054.8;17,056.8; Illiterates and without studies;2,685.9;350.7;2,335.2; Primary and Secondary Education of first cycle;9,404.3;488.5;8,915.7; Secondary education of second cycle and post-secundary;3,307.9;109.6;3,198.3; University;2,713.5;105.9;2,607.5; RELATIVE FIGURES; Both genders; Total;100.00;4.60;95.40; Illiterates and without studies;100.00;11.51;88.49; Primary and Secondary Education of first cycle;100.00;4.07;95.93; Secondary education of second cycle and post-secundary;100.00;2.44;97.56; University;100.00;2.66;97.34; Males; Total;100.00;3.31;96.69; Illiterates and without studies;100.00;9.70;90.30; Primary and Secondary Education of first cycle;100.00;2.90;97.10; Secondary education of second cycle and post-secundary;100.00;1.61;98.39; University;100.00;1.29;98.71; Females; Total;100.00;5.82;94.18; Illiterates and without studies;100.00;13.06;86.94; Primary and Secondary Education of first cycle;100.00;5.19;94.81; Secondary education of second cycle and post-secundary;100.00;3.31;96.69; University;100.00;3.90;96.10; Notes: 1) The data about to crossing of the category 'If they have difficulty' with 'Secondary education of second cycle and post-secundary' and 'University' must be viewed with caution, because they may be affected by high sample errors Source: National Statistics Institute and Ministry of Health and Consumption