National tables. Lifestyles: number of nights spent away from home. Percentages 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: percentages ,Total,High risk,Intermediate risk,Low or no risk,Depends on whether they share syringes or not, Both sexes, Total,100.00,59.10,9.93,0.47,30.51, At least 1 a month,100.00,62.13,11.48,0.69,25.70, Less than 1 a month,100.00,58.51,9.62,0.42,31.45, Males, Total,100.00,59.30,11.68,0.67,28.35, At least 1 a month,100.00,61.43,12.67,0.84,25.06, Less than 1 a month,100.00,58.71,11.40,0.62,29.27, Females, Total,100.00,58.90,8.12,0.26,32.72, At least 1 a month,100.00,63.56,9.05,0.38,27.02, Less than 1 a month,100.00,58.32,8.01,0.25,33.42, 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