National tables. Lifestyles: nights spent away from home. Values Persons 18 to 49 years by sex, no. of nights spent away from home becuase of work/studies in the last 12 months and perception of risk of infection of HIV/AIDS by injectable drugs Units: thousands of persons ,Total,High risk,Intermediate risk,Low or no risk,Depends on whether they share syringes or not,No data recorded, Both sexes, Total,20,759.6,12,112.0,2,041.3,96.7,6,244.5,265.2, At least 1 a month,3,397.9,2,085.4,385.3,23.1,862.8,41.3, Less than 1 a month,17,246.1,9,964.9,1,638.3,71.8,5,357.3,213.7, No data recorded,115.7,61.7,17.6,1.8,24.3,10.2, Males, Total,10,532.1,6,158.8,1,216.2,70.6,2,939.4,147.1, At least 1 a month,2,279.2,1,383.8,285.5,18.9,564.6,26.4, Less than 1 a month,8,193.6,4,741.3,920.9,49.8,2,363.6,117.9, No data recorded,59.4,33.7,9.8,1.8,11.2,2.8, Females, Total,10,227.5,5,953.2,825.0,26.2,3,305.0,118.1, At least 1 a month,1,118.7,701.6,99.8,4.2,298.2,14.9, Less than 1 a month,9,052.5,5,223.6,717.4,22.0,2,993.7,95.8, No data recorded,56.3,28.0,7.7,0.0,13.1,7.4, 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