National tables. Lifestyles: nights out. Values Persons who have been diagnosed with some kind of sexually transmitted disease by sex and number of nights out in the last 12 months Units: thousands of persons Both sexes Total 1,047.3 At least 1 a month 647.6 Less than 1 a month 399.7 No data recorded 0.0 Males Total 583.8 At least 1 a month 388.6 Less than 1 a month 195.1 No data recorded 0.0 Females Total 463.5 At least 1 a month 258.9 Less than 1 a month 204.6 No data recorded 0.0 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