National tables. Lifestyles: nights out. Percentages Rate of persons who have had sexual rel. with new partners in the last year by number of nights out in the last 12 months and sex Units: percentages Both sexes Males Females Total 15.05 19.84 9.92 At least 1 a month 19.71 24.20 13.96 Less than 1 a month 5.64 8.25 3.70 Notes: 1) Rate calculated as regards the population of 18 to 49 year olds who have had sexual relationships in the last year 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