Predicting Tooth Surface Loss Using Genetic Algorithms-Optimized Artificial Neural Networks

Table 3

Independent variable importance as calculated by SPSS neural networks module.

Independent variable importance
	Importance (or weight in the ANN)	Normalized importance
Age	0.160	100.0%
Smoker status	0.029	18.0%
Type of brush	0.074	46.2%
Frequency of brushing/month	0.105	65.5%
Frequency of bruxism/month	0.027	16.7%
Frequency of oranges eating/month	0.127	79.1%
Frequency of apples eating/month	0.078	48.7%
Frequency of lemon eating/month	0.073	45.8%
Frequency of pickle eating/month	0.136	84.8%
Minutes of seeds eating/month	0.075	46.7%
Frequency of fizzy drinks/month	0.118	73.8%