Over the study period (2005, 2006, 2008 and 2009), there were
on average 19 days of transboundary smoke haze episodes during which the API 76 (within Lower Moderate to Hazardous categories).
Each haze episode on average resulted in an increase of 2.4
inpatient cases per 10,000 persons each year. The marginal impact
of smoke haze on inpatient rates was highest for children, followed
by young adults, senior citizens, and infants