Identifying Catch-Up Trajectories in Child Growth
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World Bank, Washington, DC
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Definitions of catch-up growth in
anthropometric outcomes among young children vary across
studies. This paper distinguishes between catch-up in the
mean of a group toward that of a healthy reference
population versus catch-up within the group, associated with
a narrowing of the outcome distribution. In contrast to
conventional empirical approaches based on dynamic panel
models, the paper shows how catch-up can be tested via a
latent growth framework. Combined with a flexible estimator
incorporating individual-specific intercepts and slopes,
this enables between- and within-group forms of catch-up to
be tested in a unified setting. The application of the
proposed approach reveals significant differences in the
nature, extent, and drivers of catch-up growth across the
four Young Lives countries (Ethiopia, India, Peru, and
Vietnam). In addition, the paper shows how conclusions about
catch-up are sensitive to the way in which anthropometric
outcomes are expressed.
Palabras clave
CHILD DEVELOPMENT, CHILD HEALTH, EARLY CHILDHOOD DEVELOPMENT, DEMOGRAPHICS