Table 5.

Variables selected by classification tree and logistic regression models

Variable name	Caucasian						African-American
	Genetic information importance			Health habit information importance			Genetic information importance			Health habit information importance
	classification trees		logistic	classification trees		logistic	classification trees		logistic	classification trees		logistic
			regression			regression			regression			regression
	full	pruned		full	pruned		full	pruned		full	pruned
Skin cancer cognitive factors
Skin cancer worry	x	x	x	x	x	x	x		x	x	x	x
Skin cancer perceived risk	x	x	x			x
Genetic factors cause skin cancer									x
Health habits cause skin cancer							x		x	x
Skin cancer behavioral factors
Severe sunburn last 12 months												x
Sunscreen last 1 months	x			x
Should reduce sun exposure
Should improve health habits
Sociodemographics
Age	x			x
Sex
Education							x		x
Married/couple
Children
Family factors
Family health history awareness	x		x	x	x	x	x		x	x	x	x
Family cancer history
Social influences on learning more	x	x	x	x	x	x	x	x
Social influences on doing more	x			x			x	x	x	x	x	x
Social influences affect motivation	x		x	x		x	x		x	x	x	x
Personal health choices affect others	x		x	x	x	x	x		x	x	x	x
Health information seeking										x	x	x
Total number variables in model	9	3	6	8	4	7	8	1	7	7	7	7
Total number splits or parameters estimated	13	3	19	11	4	22	8	1	21	8	8	22
Prediction accuracy, overall	82.8%	79.4%	79.9%	82.4%	79.8%	80.7%	68.4%	63.9%	68.3%	69.5%	69.5%	69.7%