Case Control Study of the Risk Under Weight Baby New Born Incidence in Hospital Mimika Regency

Introduction: There indicator of mortality of baby in Indonesia is still high, caused of underweight baby new born. There is influnece underweight baby new born is internal factor and external factor.
Target of research: to knowing the case control study of the risk under weight baby new born incidence in hospital mimika regency.
Method Research: Retrospective with case control study design. Research executed on April until May 2018 in Hospital Mimika with population is a partus on year 2017 and amount of sample case counted 87 people and 174 control. Data approach used observation by medical record and analysed by Chi square test and logistic binary regression.
Result of research: The factors affecting of incidence underweight baby new born in Hospital Mimika is age (p-value 0,010; OR = 2,121; CI95% (1,231 – 3,654), antenatal care frequency (p-value 0,004; OR = 2,813; CI95% (1,412 – 5,601), anemia (p-value 0,000; OR = 10,063; CI95% (5,543 – 18,267), pre eclampsia (p-value 0,001; OR = 3,412; CI95% (1,627 – 7,151) and malaria (p-value 0,000; OR = 4,192; CI95% (1,993 – 3,818). And then factors affecting is not influencing of incidence underweight baby new born in Hospital Mimika is ethnic (p-value 0,964; OR = 1,051; CI95% (0,615 – 1,797), parity (p-value 0,923; OR = 0,790; CI95% (0,241 – 2,596) natal interval (p-value 0,081; OR = 1,930; CI95% (0,981 – 3,800). There is age anemia and malaria is that factor dominant incidence of underweight baby new born in Mimika hospital.