Pregnancy is a natural process that will be experienced by every woman that takes place within 280 to 300 days or 39-40 weeks. During pregnancy, the pregnant woman requires proper supervision (Manuaba et al. 2006). Prenatal or Antenatal period needs requires proper guidance to prevent pregnancy problems as pregnancy, birth, and postpartum that can cause maternal and infant mortality (Bobak et al. 2005).
The Maternal Mortality Rate is indicator of health development and fulfillment to women reproduction right. Kembaran II Primary Health Center had a reasonably high MMR in the district of Banyumas. In 2014, there were three maternal deaths the number of high-risk pregnant women, about 48% (Profil Kesehatan Ibu Kabupaten Banyumas, 2014). Prenatal care is influenced by predisposing, enabling and reinforcing factors, due to mother does not know about prenatal care, maternal attitude or there is no health behavior yet (Notoatmodjo, 2005). Based on Gamelia et al. (2013) research in Ajibarang I Primary Health Care, maternal care was influenced by pregnancy age, cover a distance to health center, and husband role. Based on other research doing by Erlindawati et al. (2008) showed exposure information related to antenatal care advantage in Aceh Besar, Nanggro Aceh Darussalam. Based on background, a researcher interested to know about the factors that influence to prenatal care behavior of pregnant women in Kembaran II Primary Health Center.
This research used a quantitative cross-sectional approach. The population of study was 102 pregnant women. Sampling technic used Simple Random Sampling to third-trimester pregnant women, and the obtained sample was 80 people. Data collection was performed by interviewing using questionnaire and secondary data from Kembaran II Primary Health Center. Data collection was completed by talking using a survey containing are age, the level of primary education, primiparous parity pregnancies, work, per capita income, knowledge, attitude, family support, and information exposure. Data were analyzed by using SPSS program. Univariate analysis was used to know general description, bivariate used chi-square to know about relation and multivariate used regression logistics test to know about influence factors of behavior.
Results of univariate analysis using frequency distribution showed majority of respondents was in no risk of age (78.8%), had level of basic education (SD and SMP) (55%), had Primiparous Parity Pregnancies (35%), not work (58.8%), and had less than ( IDR 574.923) (8.8%). From 80 respondents, the majority of respondents had good knowledge (57.5%), good attitude (56.3%), good family support (57.5%), the majority of respondent had exposure information (67.5%), had poor prenatal care behavior (51.3%). Bivariate analyze using chi-square showed that exposure information variable had a p value 0.05, showing there was a relation between exposure information and prenatal care behavior in Kembaran II Primary Health Center. Multivariate analyze using regression logistics test showed exposure information variable (p = 0.009) and family support variable (p = 0.045) had p-value 0.05. That exposure information variable and family support had influenced the prenatal care behavior of pregnant women in Kembaran II Primary Health Center.
The result showed that the exposure information variable had affected the prenatal care behavior of pregnant women (p value = 0.009) in multivariate analysis. The results were consistent with research conducted by Erlindawati et al. (2008), stating that exposure of information affected the use of antenatal care to pregnant women in Aceh Besar with p = 0.015. Most of the pregnant women had been getting information about pregnancy care including the dangers of smoking in pregnancy (95%), the best exercise for pregnant women during pregnancy (92.5%) as well as information regarding taking a nap that was good for pregnant women (90%). The results of the bivariate analysis showed that of 54 pregnant women who exposed to information were 32 pregnant women (59.3%) had good behavioral in pregnancy treatments, in line with WHO theory in Notoatmodjo (2007) which stated that the provision of information was one of behavior change strategy in the health program. According to Snehendu B. Kar in Notoatmodjo (2007), the presence or absence of information about health or health care facilities affected a person's behavior. Sources of information obtained by pregnant women came from health professionals, print media, electronic media and others (friend, a health volunteer, family, etc.). Based on the research questionnaire, it's said that pregnant women got information from health workers such as antenatal care (51.3%), the dangers of smoking on pregnancy (40%), TT immunization (73.8%), taking a nap was kind to pregnant women (56.3%), the benefits of folic acid (52.5%), breast care (45%), exercising for pregnant women (61.3%), cleanliness the female organs (61.3%), sexual activity (53.8%), cutting the nails (26.3%), taking bath twice a day (32.5%) and replacing underwear at least 2 times a day (41.3%).
Family support variables showed that it had affected the prenatal care behavior of pregnant women with p = 0.045 in the multivariate analysis. The results were consistent with research conducted by Gamelia et al. (2012) which stated that the husband's family support, especially support influenced the behavior of the mother's pregnancy care in Puskesmas I Ajibarang Banyumas with p = 0.003. Based on data obtained from the questionnaire, it's known that a pregnant mother's family always listened to any complaints about the pregnancy (91.3%), the family still provided nutritious meals for pregnant women (81.3%) and family always told mothers about the dangers smoking on the safety of the baby in the womb (78.8%). This was consistent with the theory of Snehendu B. Kar in Notoatmodjo (2003) which stated that the behavior of a person's health was determined partly by the presence or absence of the support of the surrounding community (social assistance). Based on the survey results, it revealed that out of 46 mothers pregnant who had good family support were 27 mothers expectant (58.7%) that had a good pregnancy care behavior, showing that the greater family support, the better ssimilarly behavior of pregnant women. Most pregnant women were always being told by a family that pregnancy tests should be conducted at least twice during pregnancy (72.5%). It's supported by behavior respondents always checking the health to healthcare (95%). Family support was one factor that contributed to an essential role in determining the health status of mothers. Families, especially husbands, often acted as a "gatekeeper" for the search and the use of health services for his wife and family (UNFPA 2004).
The results showed that the factors that influenced the behavior of prenatal care to pregnant women in Kembaran II Primary Health Care were exposure information and family support. Variables that were not influential were age, parity, education level, occupation, income, knowledge, and attitudes.
Suggestion for pregnant women, it's necessary for them to be more active to access information independently about pregnancy care in particular about hygiene personal, TT, nutrient consumption for pregnant women, physical activity, the gravity of the pregnancy from various sources. It's not only from midwives, but also can be from any media (books, leaflets, newspapers, magazines, television, internet, radio, etc.), health volunteers, friends, family, etc.