National tables. Lifestyles: nights out. Percentages Persons who have had sexual rel. with casual partners in the last year by sex, number of nights out in the last 12 months and use of condom with casual partners Units: percentages ,Total,Always,Not always, Both sexes, Total,100.00,58.93,41.07, At least 1 a month,100.00,60.47,39.53, Less than 1 a month,100.00,50.46,49.54, Males, Total,100.00,59.77,40.23, At least 1 a month,100.00,60.76,39.24, Less than 1 a month,100.00,53.45,46.55, Females, Total,100.00,56.35,43.65, At least 1 a month,100.00,59.46,40.54, Less than 1 a month,100.00,44.29,55.71, 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