. 2015 Jun 11;12:18. doi: 10.1186/s12954-015-0052-3

Table 2.

Probit model examining the probability that a participant in one of the three trial groups tried a product (N = 196)

Characteristics		Coefficient (standard error in parentheses)
Product offered to participant in trial	Intercept	−0.70
	Intercept	(0.57)
	Nicorette	0.51^b
	Nicorette	(0.25)
	Ariva	0.72^b
	Ariva	(0.25)
Age		0.00
Age		(0.01)
Income		0.11
Income		(0.09)
Education		0.03
Education		(0.10)
Female		−0.19
Female		(0.23)
Race/Ethnicity	Black vs. White	−0.09
	Black vs. White	(0.29)
	Other vs. white	−0.80^a
	Other vs. white	(0.39)
State	South Carolina (vs. New York)	−0.40
	South Carolina (vs. New York)	(0.27)
	Pennsylvania (vs. New York)	−0.21
	Pennsylvania (vs. New York)	(0.28)
Ever used smokeless tobacco		0.80^b
Ever used smokeless tobacco		(0.24)
Worried about their quality of life because of smoking		0.10
Worried about their quality of life because of smoking		(0.22)
Estimate of the cost of smokeless tobacco products		−0.00
Estimate of the cost of smokeless tobacco products		(0.01)

^aStatistically significant at the 0.05 level

^bStatistically significant at the 0.01 level