Auditory and visual characteristics
Population 16 year old and over by sex, social class of the main  breadwinner and if they have difficulty for seening
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	
        I: AA.PP. executives and of companies with 10 or more wage earners and Professions associated  with university degree	2,909.6	58.2	2,851.4	
        II:Executives od companies with less than 10 employees and Professions associated  with intermediate degree. Advanced technicians. Artists and Sportspersons	3,459.2	104.2	3,355.0	
        III: Administrative type employees and Administrative and financial support professionals. Personal services workers and Security. Freelance workers. Supervisors of manual workers	8,749.4	379.8	8,369.6	
        IVa: Skilled manual workers	10,891.2	529.4	10,361.8	
        IVb: Semi-skilled manual workers	4,521.6	205.8	4,315.8	
        V: Unskilled workers	4,362.1	324.2	4,037.9	
        VI. Another type employees	275.2	9.5	265.8	
        No data recorded	193.1	15.3	177.7	
    Males	
        Total	17,249.8	571.7	16,678.2	
        I: AA.PP. executives and of companies with 10 or more wage earners and Professions associated  with university degree	1,371.8	10.1	1,361.8	
        II:Executives od companies with less than 10 employees and Professions associated  with intermediate degree. Advanced technicians. Artists and Sportspersons	1,744.6	33.6	1,711.0	
        III: Administrative type employees and Administrative and financial support professionals. Personal services workers and Security. Freelance workers. Supervisors of manual workers	4,191.6	122.1	4,069.4	
        IVa: Skilled manual workers	5,597.5	233.4	5,364.1	
        IVb: Semi-skilled manual workers	2,128.8	76.3	2,052.5	
        V: Unskilled workers	2,016.8	91.9	1,924.9	
        VI. Another type employees	143.2	3.1	140.2	
        No data recorded	55.4	1.2	54.2	
    Females	
        Total	18,111.6	1,054.8	17,056.8	
        I: AA.PP. executives and of companies with 10 or more wage earners and Professions associated  with university degree	1,537.8	48.1	1,489.6	
        II:Executives od companies with less than 10 employees and Professions associated  with intermediate degree. Advanced technicians. Artists and Sportspersons	1,714.6	70.6	1,644.0	
        III: Administrative type employees and Administrative and financial support professionals. Personal services workers and Security. Freelance workers. Supervisors of manual workers	4,557.8	257.7	4,300.1	
        IVa: Skilled manual workers	5,293.7	296.0	4,997.7	
        IVb: Semi-skilled manual workers	2,392.8	129.5	2,263.2	
        V: Unskilled workers	2,345.3	232.3	2,113.0	
        VI. Another type employees	132.0	6.4	125.6	
        No data recorded	137.7	14.2	123.5	
RELATIVE FIGURES	
    Both genders	
        Total	100.00	4.60	95.40	
        I: AA.PP. executives and of companies with 10 or more wage earners and Professions associated  with university degree	100.00	2.00	98.00	
        II:Executives od companies with less than 10 employees and Professions associated  with intermediate degree. Advanced technicians. Artists and Sportspersons	100.00	3.01	96.99	
        III: Administrative type employees and Administrative and financial support professionals. Personal services workers and Security. Freelance workers. Supervisors of manual workers	100.00	4.34	95.66	
        IVa: Skilled manual workers	100.00	4.86	95.14	
        IVb: Semi-skilled manual workers	100.00	4.55	95.45	
        V: Unskilled workers	100.00	7.43	92.57	
        VI. Another type employees	100.00	3.44	96.56	
        No data recorded	100.00	7.95	92.05	
    Males	
        Total	100.00	3.31	96.69	
        I: AA.PP. executives and of companies with 10 or more wage earners and Professions associated  with university degree	100.00	0.73	99.27	
        II:Executives od companies with less than 10 employees and Professions associated  with intermediate degree. Advanced technicians. Artists and Sportspersons	100.00	1.93	98.07	
        III: Administrative type employees and Administrative and financial support professionals. Personal services workers and Security. Freelance workers. Supervisors of manual workers	100.00	2.91	97.09	
        IVa: Skilled manual workers	100.00	4.17	95.83	
        IVb: Semi-skilled manual workers	100.00	3.58	96.42	
        V: Unskilled workers	100.00	4.56	95.44	
        VI. Another type employees	100.00	2.14	97.86	
        No data recorded	100.00	2.08	97.92	
    Females	
        Total	100.00	5.82	94.18	
        I: AA.PP. executives and of companies with 10 or more wage earners and Professions associated  with university degree	100.00	3.13	96.87	
        II:Executives od companies with less than 10 employees and Professions associated  with intermediate degree. Advanced technicians. Artists and Sportspersons	100.00	4.12	95.88	
        III: Administrative type employees and Administrative and financial support professionals. Personal services workers and Security. Freelance workers. Supervisors of manual workers	100.00	5.65	94.35	
        IVa: Skilled manual workers	100.00	5.59	94.41	
        IVb: Semi-skilled manual workers	100.00	5.41	94.59	
        V: Unskilled workers	100.00	9.91	90.09	
        VI. Another type employees	100.00	4.85	95.15	
        No data recorded	100.00	10.30	89.70	
Notes:
1) ~'social class of the main breadwinner '~Social class categories have been extracted from the report 'The  measurement of the social class in Health Sciences' the Society  by the Spanish Epidemiology Society.
1) The data about to crossing of the category 'If they have difficulty'   with 'Social Class I and II' must be viewed with caution, because  they may be affected by high sample errors  
Source: National Statistics Institute and Ministry of Health and Consumption