Bodyweight is one of the most common anthropometric components to determin e a prescription for diet and drugs. However, this way proved to be a challenge for individuals who are unconscious and or have disabilities. The present study aims to derive a simple equation to estimate the bodyweight of adults in Jakarta by using a cross-sectional study on data taken with simple random sample method. Measurements of body weight (BW), the mid-upper arm circumference (MUAC), and the knee height (KH) were done in 164 adults in South Jakarta in May 2017. The resulting equation, which is derived by multi linear regression, is: BW = 2.8*MUAC + 1.2*KH – 1.25*Z – 75.1 (R-square 0.841; p-value < 0.001), with Z value of 1 for female and 2 for male. The equation can approximate the bodyweight of adults.
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