The results from Method 2 are shown in TABLE 5.3. Note that each category shift in the API is equivalent to a change of 100 points, so the number of additional cases per day per 10,000 per category shift will be 100 multiplied by the regression coefficient. The dose-response coefficients vary from 0.0038 (i.e., 0.38 additional cases per day per 10,000 per category shift in API) for Penang to 0.022 (i.e., 2.2 additional cases per day per 10,000 per category shift in API) for Johor. It is interesting to note that the coefficient for Kuala Lumpur is 0.005 (i.e., 0.5 additional cases per day per 10,000). One might have expected the response rate to have been higher, because of synergistic effects of pollutants from the forest fires, reacting with emissions from motor vehicles and other sources. The estimate for Johor using Method 2 is much higher than the estimate for Johor using Method 1.