Survey on Adult Population Involvement in Learning Activities Survey on Adult Population Involvement in Learning Activities. Year 2011 Frequency and capacity to use a computer and the Internet of persons by sex and maximum educational level achieved Units: percentage of persons Never uses a computer nor the Internet Only surfs on the Internet Basic user of computers or the Internet Advanced user of computers or the Internet Expert user of computers or the Internet BOTH SEX Total 21.97 0.58 18.51 33.81 25.14 Secondary education, first stage primary education and illiterate 42.60 0.86 22.60 23.68 10.27 Mid-level studies 7.96 . 19.30 42.53 29.86 Higher and university studies 2.22 . 11.44 41.87 44.11 MALE Total 20.12 0.66 16.48 31.45 31.30 Secondary education, first stage primary education and illiterate 37.20 1.00 22.02 25.78 13.99 Mid-level studies 7.14 . 15.58 38.97 38.01 Higher and university studies 2.37 . 7.62 34.31 55.31 FEMALE Total 23.84 0.51 20.56 36.20 18.89 Secondary education, first stage primary education and illiterate 48.64 0.69 23.24 21.33 6.10 Mid-level studies 8.77 . 23.00 46.07 21.75 Higher and university studies 2.08 . 14.83 48.54 34.22 Notes: .Data protected by statistical secrecy 1) The category 'Intermediate level studies' includes: Secondary education, intermediate technical-vocational education and other. The category 'basic user' includes those persons that carry out basic operations on the computer or the Internet Data referring to 12 months before the date of the survey. The symbol '.' means that data is not available, since it may be affected by sampling errors. Source: National Statistics Institute