PHD Progress Of Disease In Prediabetic And Prehypertensive Patients In Malawi: Assessment Of Risk Factors And Complications 2017-18 (Karonga and Lilongwe combined analytical dataset)

Malawi

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Reference ID

MWI-MEIRU-combined-PHD-data-v01

Collections

Combined / Harmonized Datasets Karonga HDSS Lilongwe HDSS

Metadata

DDI/XML JSON

Created on

Nov 14, 2025

Last modified

Nov 15, 2025

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Age in years (D) (age)

Data file: phd_combined_final

Overview

Valid: 863

Invalid: 2

Type: Continuous

Decimal: 0

Start: 170

End: 174

Width: 5

Range: -2959 - 93

Format: Numeric

Description

Definition

Age in years

Imputation and derivation

Derivation

variable: ageyear (table[s]: phdk_phdq, phdl_phdq)
variable: birth_date (table[s]: gen_identity_clean [derived table], genl_identity_clean [derived table])
variable: extdate (table[s]: phdk_fieldlog, phdl_fieldlog)
variable: intdate (table[s]: phdk_consent, phdl_consent)
variable: intdate (table[s]: phdk_phdq, phdl_phdq)
variable: dob (table[s]: NCD_combined_data_all_final [derived table])

egen date=rowmax(extdate intdate_cons intdate_phdq)
replace birth_date=b_dob if birth_date==. & b_dob~=.
gen age=int((date-birth_date)/365.25)
replace age=ageyear if age==. & ageyear~=.

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