Figure 2

Different approaches to the custom statistical analysis of health data, and integration with GIS visualization. The standard approach, which involves using a statistical package in conjunction with a GIS system, is laborious and labour intensive and requires 6 steps shown here, which may preclude its usage in a time-sensitive, critical scenario such as an outbreak. The Rwui approach only requires 3 steps for repeated statistical analysis. The resulting webapp is platform independent and can be used on various devices (smartphones, PDAs, etc). And it is built around a custom R script, rather than being based around a limited number of built-in statistical analyses (as in EpiInfo and other related platforms).