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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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On how many days did you see this person while they were ill? [wide] (D) (ccontacdays3)

Data file: combined_tb_cases_controls_final

Overview

Valid: 44
Invalid: 12867
Type: Discrete
Decimal: 0
Start: 1128
End: 1128
Width: 1
Range: 1 - 9
Format: Numeric

Questions and instructions

Literal question
On how many days did you see this person while they were ill?
Categories
Value Category Cases
1 0 days 6
13.6%
2 1 day 2
4.5%
3 2-5 days 11
25%
4 6-10 days 3
6.8%
5 11-20 days 3
6.8%
6 >20 days 18
40.9%
8 Unknown 0
0%
9 Missing 1
2.3%
Sysmiss 12867
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: contacdays (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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