Replication code for "The Burden of Inaction: A Cost-of-Illness and Return-on-Investment Analysis of Child and Adolescent Overweight and Obesity in Indonesia"

This repository contains the R code to reproduce all results of the study “The Burden of Inaction: A Cost-of-Illness and Return-on-Investment Analysis of Child and Adolescent Overweight and Obesity in Indonesia”.

The code implements a Markov cohort model following Indonesian children and adolescents aged 5-19 in 2022 until age 80. It estimates the lifetime health and economic burden of overweight and obesity (healthcare costs, productivity losses, lower educational attainment and disability-adjusted life years) and the return on investment of three policies: a sugar-sweetened beverage tax, front-of-pack nutrition labelling and restrictions on unhealthy food marketing, individually and combined. The package also includes the sensitivity analyses, robustness checks, out-of-sample validation and probabilistic sensitivity analysis reported in the paper.

All analyses are run from a single script (script/00_main.R). Input data are publicly available but are not included, as several providers require user registration and do not permit redistribution. The README lists each source and explains how to obtain it.