Office for National Statistics (ONS) Longitudinal Study Downloadable Dataset on Ethnicity (aggregated data) Unit of observation (before aggregation): LS sample member Number of observations (before aggregation): 333,015 Sample selection criteria: the dataset includes all LS members who were present at all three of the most recent Censuses (1981, 1991, 2001). The minimum age (in 2001) is therefore 20 years. To analyse this aggregated dataset using STATA: Add the statement: [fweight=cascount] to every analytical command. For example: bys agegrp0: ta sex [fweight=cascount], nolab The results will be exactly the same as they would if you were using a non-aggregated dataset. To analyse this aggregated dataset using SPSS: Before performing any analyses, run the command: Weight by cascount. The results will be exactly the same as they would if you were using a non-aggregated dataset. List of variables and values: ETHGRP0 Ethnicity in 2001, grouped Value label 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 White British Irish Other White Mixed: White and Black Caribbean Mixed: White and Black African Mixed: White and Asian Other Mixed Indian Pakistani Bangladeshi Other Asian Black Caribbean Black African Other Black Chinese Other ethnic group Not known Frequency (before aggregation) 303,322 3,533 3,874 613 181 554 408 5,445 2,260 517 719 2,241 409 341 671 359 7,568 Value label Frequency SEX 1 2 (before aggregation) 156,440 176,575 Male Female AGEGRP0 Age group in 2001 Value label 1 2 3 20-39 years 40-59 years 60 years or over Frequency (before aggregation) 113,492 118,688 100,835 BORNEXUK Whether born outside UK (from 1981 Census) Value label Frequency (before aggregation) 0 Born UK or not known 312,730 1 Born outside UK 20285 ECONAC8 Whether economically active in 1981 Value label Frequency (before aggregation) 0 Inactive or not known 151,462 1 Active 181,553 ECONAC9 Whether economically active in 1991 Value label Frequency (before aggregation) 0 Inactive or not known 127,016 1 Active 205,999 ECONAC0 Whether economically active in 2001 Value label Frequency (before aggregation) 0 Inactive or not known 150,772 1 Active 182,243 CASCOUNT Number of cases in a category (variable used for analysis, frequency not shown) Cleared by Office for National Statistics: clearance numbers LS30041P, LS30041S & LS30041U