National tables. Lifestyles: nights out. Percentages Persons 18 to 49 years by sex, number of nights out in the last 12 months and preferred source of sexual information Units: percentages ;Total;Old parents or relatives;Siblings or friends;Partner;Professionals;Various support; Both sexes; Total;100.00;53.02;12.64;5.10;25.78;3.47; At least 1 a month;100.00;50.02;14.30;4.81;27.35;3.52; Less than 1 a month;100.00;59.02;9.32;5.67;22.63;3.35; Males; Total;100.00;47.34;16.18;5.66;27.13;3.69; At least 1 a month;100.00;45.62;17.17;5.48;28.06;3.67; Less than 1 a month;100.00;51.89;13.57;6.14;24.68;3.72; Females; Total;100.00;58.80;9.04;4.52;24.40;3.24; At least 1 a month;100.00;55.36;10.81;3.99;26.50;3.34; Less than 1 a month;100.00;64.11;6.29;5.34;21.17;3.09; 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