Table 2.

Results from random forest models using transcription of all 13 genes examined (‘full model’) or a ‘reduced model’ of the most influential genes to identify heat stress

	Chinook salmon		Coho salmon
	Full model	Reduced model	Full model	Reduced model
Training data
n	61	61	31	31
Correct classification	90%	92%	87%	88%
Sensitivity	93%	93%	100%	87%
Specificity	87%	90%	75%	88%
Validation data
n	90	90	110	110
Correct classification	86%	87%	89%	87%
Sensitivity	77%	83%	100%	93%
Specificity	90%	88%	88%	86%

Each model was fit with a subset of individuals (training data) and validated with all remaining individuals. Reported results include sample size (n), precent of individuals correctly classified to stressful temperature treatments (21 and 23° for Chinook salmon and 23°C for coho salmon), sensitivity and specificity.