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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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Whether date started living in previous village 1 is an estimate (D) (prefrdate1x)

Data file: combined_tb_cases_controls_final

Overview

Valid: 3196
Invalid: 9715
Type: Discrete
Decimal: 0
Start: 643
End: 643
Width: 1
Range: 1 - 9
Format: Numeric

Questions and instructions

Literal question
Whether date started living in previous village 1 is an estimate
Categories
Value Category Cases
1 Full date known 0
0%
2 Day unknown 678
21.2%
3 Month unknown 0
0%
4 Day and month unknown 2506
78.4%
5 12
0.4%
8 Not known at all 0
0%
9 Missing 0
Sysmiss 9715
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: prefrest1 [decade estimate of previous village start] table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2, tb_tbo, tb_tboto2007, tbold_control)
variable: prefrmm1 [month of previous village start] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2, tb_tbo, tb_tboto2007, tbold_control)
variable: prefryear1 [year of previous village start] (table[s]: tb_tbx, tb_tbxto2007, tbold_part1/2, tb_tbo, tb_tboto2007, tbold_control)

gen prefrdate1x=2 if prefryear1~=.
replace prefrdate1x=4 if prefrmm1==. & prefryear1~=.
replace prefrdate1x=5 if prefrest1~=. & prefryear1~=.
la val prefrdate1x datex
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