The SIHR project is a household survey focusing on over 3,800 never-married girls and young women between the ages of 13 and 22 years in the district of Zomba, Malawi. All households from 176 selected enumeration areas, chosen from the 1998 census, were asked to list members of the household. Following this, households including girls and young women within the targeted age range and having never been married were enrolled in the study. The population was then split into two main groups based on the girls and young women's schooling status: those who were out of school at baseline (baseline dropouts), and those who were in school at baseline (baseline schoolgirls). Whilst the targeted girls and young women are the core respondents, data has also been collected from the heads of households throughout the study.