TB cases (1974-2018) and controls (1998-2018) analytical dataset (Karonga)

Malawi

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Reference ID

MWI-MEIRU-TB-COMBINE-FINAL-2022-v01

Producer(s)

Mia Crampin, Estelle McLean

Collections

Karonga -District-wide Combined / Harmonized Datasets Karonga HDSS

Metadata

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Created on

Nov 14, 2025

Last modified

Nov 15, 2025

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Nearest negative HIV test date closest to TB interview (D) (nearesthivnegdate)

Data file: combined_tb_cases_controls_final

Overview

Valid: 4845

Type: Discrete

Start: 1318

End: 1327

Width: 10

Range: -

Format: character

Questions and instructions

Literal question

Nearest negative HIV test date closest to TB interview

Imputation and derivation

Derivation

variable: neg_date* [HIV negative date(s)] (table[s]: hivart_kps_known_all)

gen datehiv=intdate
replace datehiv=starteps if starteps~=.
merge m:1 ident using ${hivdata}\hivart_kps_known_all, keep(master match) keepusing(firsthivposdate lastneverart_date firstart_date lastonart_date lastartstop_date neg_date*) nogen
*hivstatus
gen hivstatus=.
gen nearesthivnegdate=.
lookfor neg_date
foreach neg_date in `r(varlist)' {
replace nearesthivnegdate=`neg_date' if datehiv-`neg_date'<=(365.25*3) & datehiv-`neg_date'>=-31 & `neg_date'~=.
replace hivstatus=0 if datehiv-`neg_date'<=(365.25*3) & datehiv-`neg_date'>=-31 & `neg_date'~=.
}

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