Index of Multiple Deprivation (IMD) decile range from 1 to 10, with 1 being the most deprived and 10 being the least deprived.
Deprivation deciles have been calculated separately for Lower level Super Output Areas (LSOAs) in England and for LSOAs in Wales as their IMDs are not comparable.
In most cases, IMD and WIMD deprivation scores accurately linked onto the LSOAs. However, for 5% of the LSOAs this was not possible because of geography boundary changes that were implemented in 2011. For these cases, an average deprivation score of all LSOAs was calculated and an average score imputed to these select LSOAs.