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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
Metadata
Documentation in PDF DDI/XML JSON
Created on
Nov 14, 2025
Last modified
Nov 15, 2025
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Was your contact with this person prolonged? [wide] (D) (ccontaclong2)

Data file: combined_tb_cases_controls_final

Overview

Valid: 254
Invalid: 12657
Type: Discrete
Decimal: 0
Start: 1122
End: 1122
Width: 1
Range: 0 - 9
Format: Numeric

Questions and instructions

Literal question
Was your contact with this person indoors?
Categories
Value Category Cases
0 Never prolonged 99
39%
1 Prolonged (hours) 137
53.9%
8 Unknown 0
0%
9 Missing 18
7.1%
Sysmiss 12657
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: contaclong (table[s]: tb_contact, tb_contactto2007, tbold_contact)

<the exposure contacts are processed separately first:>
reshape wide idcontac famcont contvil contplace trtdate trtdatex trtplace certtbcon wardvisit relship contaccon cough nurseill houseill sleepill contacind contaclong contacdays, i(ident frm_intdate) j(n)
rename * c*
rename (cident cidcontac* cfrm_intdate cnumtbcont) (ident idcontac* intdate numtbcont)
save ${tempfiles}\tbcontacts_wide, replace
<and then merged into the main file:>
merge m:1 ident intdate using ${tempfiles}\tbcontacts_wide, keep(master match) nogen
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