National tables: studies, age and sex. Values Persons who have been diagnosed with some kind of sexually transmitted disease by sex and studies. Units: thousands of persons Total Lower than secondary education Secondary education University Both sexes 1,047.3 399.6 381.0 266.6 Males 583.8 245.5 226.9 111.4 Females 463.5 154.2 154.0 155.2 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