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. 2017 Mar 6;19(3):e63. doi: 10.2196/jmir.6537

Table 2.

Tests of indirect effect of performance discrepancy on fruit and vegetable consumption through social comparisons.

Mediation tests b (SE) P
Performance discrepancy to social comparisons


Performance discrepancy to upward contrast 0.64 (0.26) .03

Performance discrepancy to downward contrast –0.85 (0.25) .001

Performance discrepancy to upward identification –0.45 (0.24) .09

Performance discrepancy to downward identification 0.25 (0.22) .12
Social comparisons to fruit and vegetable consumption


Upward contrast to fruit and vegetable consumption 0.58 (0.29) .07

Downward contrast to fruit and vegetable consumption 0.84 (0.29) .01

Upward identification to fruit and vegetable consumption –0.37 (0.29) .67

Downward identification to fruit and vegetable consumption –0.20 (0.32) .58
Total effect of performance discrepancy on fruit and vegetable consumption –1.46 (0.49) .01
Direct effect of performance discrepancy on fruit and vegetable consumption –1.03 (0.53) .08
Indirect effects of performance discrepancy on fruit and vegetable consumption through social comparisons


Through upward contrast (bias-corrected 95% CI –0.12 to 1.53) 0.37 (0.37)

Through downward contrast (bias-corrected 95% CI –2.44 to –0.15) –0.78 (0.39)

Through upward identification (bias-corrected 95% CI –0.21 to 0.47) 0.05 (0.15)

Through downward identification (bias-corrected 95% CI –0.77 to 0.13) 0.00 (0.16)