Objective:

To evaluate early childhood development (ECD) and its determinants in 12 to 59 months old children residents of communities <100 000 inhabitants.

Materials and methods:

The Encuesta Nacional de Salud y Nutrición of communities <100 000 inhabitants (Ensanut 100k) evaluated language level, access to ECD care services and standardized indicators of the eight quality of the development environment. We report indicator prevalence and standardized language scores according to variables of interest.

Results:

20.7% of children attended eight well-child care visits within the first year of life, 13.0% received an ECD assessment, 75.0% receive support for learning, 23.4% have books and 57.7% experiment violent discipline. Improved language levels are associate with socioeconomic capacities, maternal education, preschool attendance, support for learning and household books. Children exposed to more protective factors present a language level 1.5 standard deviations higher than their peers exposed to more risk factors.

Conclusion:

There is a need to increase the coverage of ECD care services and to improve early development opportunities within households.

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