Erika Nurwidiyanti, S. Kep., M.Kep. Pengarang

Introduction. The prevalence of toddlers that experiencing undernutrition and poor nutrition in Indonesia in 2013 was still quite high at 19.6%. It can be caused by the low utilization of Posyandu services to covers toddlers with under-nutrition and poor-nutrition. These study aims are to determine the factors associated with the use of Posyandu services by toddlers' families. Methods. This research was a descriptive-analytic study with a cross-sectional approach. The sample of this study was mothers of toddlers who were registered in the Posyandu of Sepat sub-village, Ngoro-Oro village, Pathuk sub-district, Gunung Kidul district in 2016 with a total of 40 people. The sampling technique used total sampling. Analysis of the data used is chi-square. Results. Utilization of Posyandu services in the village of Sepat was 42.5% in the medium category, 40% in the bad category and only 17.5% were in the good category. Factors related to the use of Posyandu services by toddlers' families were mother's age (p-value 0.018) and mother's knowledge (p-value 0.023). While the level of mother's education, mother's occupation, age of the child, and the number of children proved to be unrelated to the use of Posyandu services (p-value> 0.05). Conclusion and Recommendation. There was a significant relationship between mother's age and mother's knowledge with the utilization of Posyandu services. Health workers need to increase the provision of health education to mother's toddlers so that the scope of utilization of Posyandu can be increased and impact on reducing the number of undernutrition and poor-nutrition toddlers. Keywords: Family, posyandu utilization, toddlers.