LBW is the biggest cause of death in Pasuruan Regency, East Java, Indonesia. In 2019, East Java became the province with the highest number of LBW in Indonesia (7.1%). One of the factors for LBW is the age of the mother at delivery, and different results have been obtained correlation between maternal age and birth weight. This study is an analytical observation with a cross-sectional approach to find the correlation between the age of pregnant women and birth weight in ten public health centers in Pasuruan Regency with the highest number of childbirths. The number of samples was 5376. The sampling technique uses total sampling. The independent variable is the age of the pregnant woman. The dependent variable is birth weight. The method of data collection is carried out through secondary data, namely in the form of data from the District Health Office Pasuruan Regency regarding the age of mothers giving birth and birth weight, then the results obtained were analyzed using the Mann-Whitney U. The highest age of pregnant women is the age of mothers who are not at risk (84.32% x̄=28,72±6,992 x̃=28). The prevalence of low birth weight babies is quite high (3.79% x̄=2299,31±55,052 x̃=2300).Age of pregnant women related to birth (p=0.001). Thus, there was a correlation between the age of pregnant women and birth so public health center needs to pay attention the mothers age before pregnancy.

low birth weight

age of pregnant women

birth weight

risk age