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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
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Created on
Nov 14, 2025
Last modified
Nov 15, 2025
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ART status at interview date (D) (artstatus)

Data file: combined_tb_cases_controls_final

Overview

Valid: 1304
Invalid: 11607
Type: Discrete
Decimal: 0
Start: 1379
End: 1379
Width: 1
Range: 0 - 1
Format: Numeric

Questions and instructions

Literal question
ART status at interview date
Categories
Value Category Cases
0 Not on ART 18
1.4%
1 On ART 1286
98.6%
Sysmiss 11607
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.

Imputation and derivation

Derivation
variable: intdate [interview date] (table[s]: tb_tbx, tb_tbxto2007, tbold_tbpart1/2, tb_tbo, tb_tboto2007, tbold_control)
variable: lastneverart_date [last known never on ART date] (table[s]: hivart_kps_known_all)
variable: firstart_date [first ART date] (table[s]: hivart_kps_known_all)
variable: hivstatus [HIV status] (table[s]: derived variable)

<Created using ART dates: assign HIV positive people as not on ART if last known not on ART date was up to 2 years before and 1 month after interview date and as on ART if first ART start date was any time before, and last known on ART date was up to 2 years before interview date>
gen artstatus=0 if datehiv-lastneverart_date<=(365.25*2) & datehiv-lastneverart_date>=-31 & hivstatus==1
replace artstatus=1 if firstart_date<=datehiv & datehiv-lastonart_date<=(365.25*2) & hivstatus==1
la def art 0 "Not on ART" 1 "On ART", modify
la val artstatus art
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