Table 2.

Tests of mediation pathways

Race → PCRRace → mediatorMediator → PCR controlling for raceRace → PCR controlling for mediatorSobel statistic (P)% Effect mediated
Hypothesized mediator = family history of cancer
    Black−0.41 (−0.54 to −0.28)−0.62 (−0.90 to −0.34)0.48 (0.39-0.57)−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 (0.35-0.53)−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 (0.38-0.57)−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 (0.26-0.44)−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 (0.30-0.46)−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 (0.11-0.19)−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 (0.11-0.20)−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 (0.14-0.23)−0.62 (−0.81 to −0.43)−3.15 (0.002)12.3

NOTE: Untransformed coefficients and 95% CIs for pathways tested to determine mediation and results of the Sobel Test of statistical significance for the mediating effects. All models included age, marital status, gender, and education as covariates.