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derived_adl_iadl_gdr_20230510_readme
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***********************************************************************************************************************;
*Title: Derivation of ADL and IADL variables ;
*Purpose: Derive variables from 1992-2020 HRS waves: ;
* ADLs core: ;
* - any ADL diff (5 ADLs): bath, bed, dress, eat, toilet ;
* - any ADL diff (6 ADLs): bath, bed, dress, eat, toilet, walk ;
* - ADL diff sum (max 5 ADLs and max 6 ADLs) ;
* - ADL diff number of missing in sum (max 5 ADLs and max 6 ADLs) ;
* - ADL dependence: bath, bed, dress, eat, toilet, walk ;
* - any ADL dep (5 ADLs) , any ADL dep (6 ADLs) ;
* - ADL dep sum (max 5 ADLs and max 6 ADLs) ;
* - ADL dep number of missing in sum (max 5 ADLs and max 6 ADLs) ;
* IADLs core: ;
* - any IADL diff (5 IADLs): telephone, money, medicine, shopping, meals ;
* - IADL diff sum (max 5 IADLs) ;
* - IADL diff number of missing in sum (max 5 IADLs) ;
* - IADL help (5 IADLs) : telephone, money, medicine, shopping, meals ;
* - IADL dependence (5 IADLs) : telephone, money, medicine, shopping, meals ;
* - any IADL dep (5 IADLs) ;
* - IADL dep sum (max 5 ADLs) ;
* - IADL dep number of missing in sum (max 5 ADLs) ;
* Any ADLs dep Exit (5 ADLs, 6 ADLs) ;
* ADL dep sum Exit (max 5 ADLs and max 6 ADLs) ;
* ADL dep number of missing in sum Exit (max 5 ADLs and max 6 ADLs) ;
* Maximum time help Exit (5 ADLs, 6 ADLs) ;
* Any IADLs dep Exit (5 IADLs) ;
* IADL dep sum exit (max 5 ADLs) ;
* IADL dep number of missing in sum exit (max 5 ADLs) ;
* Maximum time help Exit (4 IADLs: meal,shop,phone,meds) ;
*Statistician: Grisell Diaz-Ramirez ;
*Finished: 2023.05.10 ;
***********************************************************************************************************************;
***********************************************************************************************************************;
* Other Notes: ;
*-ADL diff for toilet not asked in wave 1 and 2H ;
*-ADL Help variables not present in wave 1 and 2H. So: ;
* -We can only know if the participant didn't have ADL dependence by looking at the ADL difficulty variables ;
*-Core ADLs with special missing value:".X=don't do" recoded to "1.yes has limitation" ;
*-Exit ADLs with special values: 2.Couldn't do, 9.Didn't do recoded to "1.yes has dependence" ;
*-IADL difficulties not asked in wave 1 ;
*-In wave 2H only IADLs: phone, medicine, and money ;
*-IADL help variables not present in waves 1 and 2. So: ;
* -We can only know if the participant didn't have IADL dependence by looking at the IADL difficulty variables ;
*-IADLs with special missing value:".X=don't do" recoded to "0.no limitation" ;
* Rebecca Brown 2015: ;
* "My clinical perspective is that if the participant says that they don’t do a certain IADL ;
* (e.g., an older man whose wife has always cooked for him) then it doesn’t matter if they would have difficulty ;
* if they did do that activity, because they never do that activity." ;
*-For IADL taking medication, change special missing value:".Z=Don't do/No if did" to "0.no limitation" ;
*-Exit IADLs with special value: 2.Couldn't do recoded to "1.yes has dependence" ;
*-Exit IADLs with special value: 9.Didn't do recoded to "0.no dependence" ;
***********************************************************************************************************************;