Learning objectives

1.       Know the difference between disease severity and disease incidence, and between accuracy and precision.

2.      Compare relative advantages of two types of scales used for disease severity estimation: a logarithmic scale (Horsfall-Barratt) and a percentage scale.

3.       Understand how the use of a scale can later affect data analyses.

Time required

Two to three hours.

Software and materials needed

·         Microsoft® EXCEL®.

·         Cards and markers.

Background

Activities  

Discussion

References