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Aggregate LSOAs'21 to LSOA'11 for Left Behind Areas - England and Wales

aggregate_lba_lsoas.Rd

Changes were made in England and Wales to 2011 LSOA codes in 2021 to reflect population and household changes. Change codes:

  • U = Unchanged - 31,810 LSOAs remained unchanged from 2011 to 2021

  • S = Split - 834 LSOAs were split from 2011 to 2021 into two or more

  • M = Merged - 194 LSOAs were merged from 2011 to 2021 with one or more

  • X = Fragmented - 6 LSOAs were fragmented/redesigned from 2011 to 2021

Usage

aggregate_lba_lsoas(data)

Arguments

data

Dataframe containing 2021 LSOA codes with boolean LBA data

Value

Dataframe containing the aggregated 2011 LSOA codes

Details

Aggregation strategy going from 2021 codes to 2011 codes:

  • change_code == "U": no action required

  • change_code == "S": if ANY of the 2021 LSOAs resulting from the split is left behind, 2011 LSOA is considered left-behind

  • change_code == "M": 2011 LSOA's inherit the left-behind characteristics of the 2021 LSOA that resulted from the merge: if the 2021 LSOA is left behind, all corresponding 2011 LSOA's are considered left-behind, and vice versa

  • change_code == "X": 2011 LSOA's inherit the left behind characteristics of their corresponding 2021 LSOA. Then group by 2011 LSOA, if any is left-behind, consider the LSOA left-behind