Hubungan Sanitasi Rumah secara Fisik dengan Kejadian Ispa pada Balita

House is public health effort which focus on supervision in physical structure as it function for protection in order to influence human health. House sanitation condition related to morbidity of infectious disease, which one is Acute Respiratory Tract Infectious (ISPA) disease. Ventilation, temperature, humidity, people density in house and natural lighting are some condition which identified with this disease. The objective of this study was to analyze physical sanitation condition and Acute Respiratory Tract Infectious (ISPA) disease incidence in children under five years old. Study was conducted in Kelurahan Penjaringan Sari Kecamatan Rungkut Surabaya. This study was analytical observational with cross-sectional approach. Population is all house which has children under five years old. Fifty nine (59) family were included as the sample. Chi square is used for analyze relationship between physical house sanitation condition variable with Acute Respiratory Tract Infectious (ISPA) disease in children under five years old.. The result showed that there was correlation between house sanitation condition with Acute Respiratory Tract Infectious (ISPA) in children under five years old (p=0,000). Each variable in sanitation condition which has correlation is people density in house (p=0,005), ventilation (p=0,009), natural lighting (p=0,047), while temperature (p=0,179) and humidity (p=0,134) has no correlation. Based on this study, it can be concluded that variable of sanitation condition related with Acute Respiratory Tract Infectious (ISPA) disease is ventilation, natural lighting and people density in house. It is recommended to improve house sanitation condition for all of the family. Keywords : Child under five year old, House sanitation, ISP