OBJECTIVE: To set up appropriate parameters and scales of analysis for monitoring infectious diseases using Rogerson spatial pattern surveillance method.METHODS: Hepatitis data in Henan provinces from 2006 to 2009 were tested using Rogerson spatial patterns surveillance method.RESULTS: When the parameters were set with n0 = 12, K= 0.5, H = 7.17, r = 25 and analyzed at city level, 26 alarms were triggered. When the parameters were set with n0 = 4, K = 0.5, H = 8.26, r = 15 and analyzed at county level, 115 alarms were triggered.CONCLUSION: K and a need to be set first, followed by n0 and r with adaptation to the anticipated numbers of alarm. Then, the parameters of ARL0, ARL1, and H can be calculated. For the surveillance of hepatitis A, county level analysis is more reasonable than city level.
China Cluster Analysis