Data come from the survey on SIS (Sexuality of Italian Students), a national representative sample of students of the first two years of Statistical and Economical Sciences attending state universities in Italy, interviewed in 2000-01. Survey was conducted to provide an updated portrayal of sexual and affective
opinions and behaviour among Italian university students. In 2017, SELFY (Sexual and Emotional Life of Youths), an almost identical survey, was conducted to compare results. In 2000 and 2017, 4998 and 8094 students were surveyed, respectively.
