This study provided evidence that the values of numerous factors, including risk factors at one phase of disease, can be used to construct a mathematical equation to predict clinical outcomes.

Learn how to rewrite expressions by taking out common factors with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Interpreting math expressions is one of those things that seems simple until you get into it. The first problem is correctly lexing the input — a term that means splitting into tokens.