Glossary

• Average daily population - the average daily population over a given analytical period across the prison estate is the total number of prisoner days served, divided by the number of days in that period.
• Index offence - the offence category for which the longest sentence has been received over a period. For prisoners on remand, the index offence is determined based on the average sentence associated with offence types from Criminal Proceedings.
• Index offence group - the Index Offence for which the longest sentence has been received over a period, grouped into higher-level categories. Further information on groupings is provided in the Scottish prison population statistics technical manual.
• Index sentence - the longest single sentence being served during a period in custody.
• Long-term prisoner - those with an overall sentence of four years or more.
• Of no fixed abode - self-reported status. On arrival the individual is unable to, or declines to, provide a home address.
• Remand - the remand population comprises individuals who are untried and those who are convicted awaiting sentence (CAS).
• Short-term prisoner - those with an overall sentence of less than four years.