Table 2.

Tests of Mediation Pathways^*‡

	Race → PCR†	Race → mediator	Mediator → PCR controlling for race	Race → PCR controlling for mediator	Sobel statistic (P-value)	% Effect
Hypothesized mediator = family history of cancer
Black	−0.41 (−0.54 to −0.28)	−0.62 (−0.90 to −0.34)	0.48 (0.39 to 0.57)	−0.35 (−0.48 to −0.22)	−3.99 (<0.001)	14.6
Hispanic	−0.35 (−0.49 to −0.21)	−1.06 (−1.39 to −0.73)	0.44 (0.35 to 0.53)	−0.24 (−0.39 to −0.10)	−5.29 (<0.001)	29.8
Asian	−0.71 (−0.92 to −0.50)	−1.79 (−2.36 to −1.22)	0.48 (0.38 to 0.57)	−0.52 (−0.73 to −0.30)	−5.34 (<0.00)	27.2
Hypothesized mediator = smoking status
Black	−0.41 (−0.54 to −0.27)	Ns
Hispanic	−0.35 (−0.49 to −0.21)	−0.43 (−0.72 to −0.14)	0.35 (0.26 to 0.44)	−0.31 (−0.45 to −0.17)	−2.77 (0.006)	10.4
Asian	−0.71 (−0.92 to −0.50)	−1.23 (−1.79 to −0.68)	0.38 (0.30 to 0.46)	−0.61 (−0.82 to −0.41)	−4.02 (<0.001)	13.4
Hypothesized mediator = belief that everything causes cancer
Black	−0.41 (−0.54 to −0.27)	−0.28 (−0.45 to −0.11)	0.15 (0.11 to 0.19)	−0.37 (−0.50 to −0.24)	−3.03 (0.002)	8.2
Hispanic	−0.35 (−0.49 to −0.21)	−0.38 (−0.55 to −0.21)	0.15 (0.11 to 0.20)	−0.28 (−0.43 to −0.14)	−3.66 (0.002)	17.9
Asian	−0.71 (−0.92 to −0.50)	−0.39 (−0.64 to −0.15)	0.18 (0.14 to 0.23)	−0.62 (−0.81 to −0.43)	−3.15 (0.002)	12.3

^*Untransformed coefficients and 95% confidence intervals for pathways that must be statistically significant to support mediation and results of Sobel Test of statistical significance for the mediating effects

^†PCR = perceived cancer risk

^‡All models included age, marital status, gender, and education as covariates