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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Res Nurs Health. 2013 Mar 26;36(4):330–348. doi: 10.1002/nur.21544

Table 5.

Variance (R2) and Percentage of Variance in Dependent Variables Explained by Attributes Alone and Attributes with Preceding Mediating Variables

Distance Maps Cluster Location Maps

Mediating Variables and Intentions Only Attributes (OA) Attributes With Preceding Mediating Variables (PMV) Only Attributes (OA) Attributes With Preceding Mediating Variables (PMV)
Specific Beliefs R2 Susceptibility .53 .51
R2 Severity .04* .04**
R2 Locational social comparison .44 .37
Global Belief (serious problem) R2 .42 .61 .31 .52
R2 percentage OAa 68.9% 59.2%
R2 percentage PMVb 31.1% 40.8%
Emotion (distress) R2 .23 .42 .13 .35
R2 percentage OA 54.3% 37.8%
R2 percentage PMVb 45.7% 62.2%
Monitor Intention R2 .25 .49 .11 .33
R2 percentage OA 51.0% 33.4%
R2 percentage PMVb 49.0% 66.6%
Mitigate Intention R2 .32 .56 .24 .49
R2 percentage OA 57.0% 50.1%
R2 percentage PMVb 43.0% 49.9%

Note: Explained variance significant at p < .001 unless noted as follows:

*

p < .05,

**

p < .01.

a

R2 percentage OA = (R2 of OA ÷ R2 attributes with PMV) × 100

b

R2 percentage contributed by PMV = 100% minus R2 percentage OA