All Bioimpedance and Hand-grip Data (Karonga and Lilongwe combined data)

Malawi, 2016 - 2019

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Reference ID

MWI-MEIRU-bioimp-handgrip-combined-v01

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Combined / Harmonized Datasets Karonga HDSS Lilongwe HDSS

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Created on

Nov 14, 2025

Last modified

Nov 18, 2025

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Fat-free mass in KG (value calculated using impedance) (D) (ffmass_I)

Data file: bioimp_handgrip_combined

Overview

Valid: 2351

Invalid: 1076

Type: Continuous

Decimal: 0

Start: 216

End: 231

Width: 16

Range: 28.7454299926758 - 84.9832229614258

Format: Numeric

Description

Definition

Fat-free mass in KG (value calculated using impedance)

Imputation and derivation

Derivation

variable: height (table[s]: this dataset)
variable: weight (table[s]: this dataset)
variable: impval (table[s]: this dataset)
variable: sex (table[s]: this dataset)
variable: dropped_I (table[s]: this dataset)

gen ffmass_I=-10.68+(0.65*(height^2/impval))+(0.26*weight)+(0.02*impval) if sex==0 & height~=. & weight~=. & impval~=. //male
replace ffmass_I=-9.53+(0.69*(height^2/impval))+(0.17*weight)+(0.02*impval) if sex==1 & height~=. & weight~=. & impval~=. //female
<remove inconsistent data from combined data:>
foreach var in fatmass_I fatmasspc_I ffmass_I ffmasspc_I {
replace `var'=. if dropped_I==1
}

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