National tables: studies, age and sex. Percentages
Persons 18 to 49 years by sex, age group, studies and  perception of risk of infection of HIV/AIDS by injectable  drugs.
Units: percentages

,Total,High risk,Intermediate risk,Low or no risk,Depends on whether they share syringes or not,
Both sexes,
    Total,
        Total,100.00,59.10,9.96,0.47,30.47,
        Lower than secondary education,100.00,61.48,10.21,0.86,27.45,
        Secondary education,100.00,58.70,9.28,0.30,31.72,
        University,100.00,55.22,10.68,0.03,34.08,
    From 18 to 29 years of age,
        Total,100.00,59.19,11.07,0.50,29.24,
        Lower than secondary education,100.00,60.55,11.18,0.99,27.29,
        Secondary education,100.00,60.84,10.46,0.35,28.35,
        University,100.00,52.94,12.33,0.02,34.71,
    From 30 to 39 years of age,
        Total,100.00,57.06,9.68,0.46,32.81,
        Lower than secondary education,100.00,60.66,10.52,0.76,28.06,
        Secondary education,100.00,55.10,7.96,0.42,36.52,
        University,100.00,53.71,10.76,0.00,35.53,
    From 40 to 49 years of age,
        Total,100.00,61.37,8.87,0.45,29.31,
        Lower than secondary education,100.00,63.10,9.07,0.84,26.99,
        Secondary education,100.00,59.40,8.80,0.05,31.75,
        University,100.00,60.11,8.51,0.08,31.31,
Males,
    Total,
        Total,100.00,59.30,11.71,0.68,28.30,
        Lower than secondary education,100.00,62.96,11.24,1.17,24.63,
        Secondary education,100.00,57.13,11.21,0.44,31.22,
        University,100.00,55.45,13.84,0.05,30.66,
    From 18 to 29 years of age,
        Total,100.00,59.03,12.55,0.79,27.63,
        Lower than secondary education,100.00,63.13,11.49,1.30,24.08,
        Secondary education,100.00,57.91,12.27,0.62,29.20,
        University,100.00,52.06,16.04,0.00,31.90,
    From 30 to 39 years of age,
        Total,100.00,57.81,11.21,0.60,30.38,
        Lower than secondary education,100.00,63.14,11.32,1.01,24.53,
        Secondary education,100.00,53.58,9.76,0.45,36.21,
        University,100.00,54.11,13.55,0.00,32.34,
    From 40 to 49 years of age,
        Total,100.00,61.45,11.21,0.63,26.71,
        Lower than secondary education,100.00,62.60,10.89,1.20,25.31,
        Secondary education,100.00,60.39,11.19,0.10,28.32,
        University,100.00,60.45,12.00,0.16,27.39,
Females,
    Total,
        Total,100.00,58.89,8.16,0.26,32.69,
        Lower than secondary education,100.00,59.83,9.06,0.51,30.60,
        Secondary education,100.00,60.41,7.19,0.15,32.25,
        University,100.00,55.03,8.16,0.01,36.80,
    From 18 to 29 years of age,
        Total,100.00,59.35,9.53,0.20,30.92,
        Lower than secondary education,100.00,57.02,10.74,0.55,31.68,
        Secondary education,100.00,63.89,8.58,0.06,27.47,
        University,100.00,53.53,9.85,0.03,36.59,
    From 30 to 39 years of age,
        Total,100.00,56.28,8.09,0.32,35.32,
        Lower than secondary education,100.00,57.84,9.60,0.47,32.09,
        Secondary education,100.00,56.79,5.95,0.39,36.87,
        University,100.00,53.39,8.58,0.00,38.04,
    From 40 to 49 years of age,
        Total,100.00,61.30,6.54,0.27,31.89,
        Lower than secondary education,100.00,63.55,7.40,0.52,28.52,
        Secondary education,100.00,58.26,6.06,0.00,35.68,
        University,100.00,59.77,5.04,0.00,35.20,
Notes:
Data corresponding to cells with less than 45,000 persons must be used with  caution, because they may be affected by high sample errors.
Source: National Statistics Institute