Grimson's method (Grimson 1989, 1991) is a versatile test used to detect space, time or space-time clustering in time series and/or point data. It can be used with individual-level or group-level data. Grimson’s test is sensitive to a high number of adjacent high risk events. The data may consist of items labeled cases for individual point data, high risk counties for group-level data, or high-risk time periods (e.g. when an exposure or diagnosis occurred) for time series data.
