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. 2013 Jan 29;8(1):e54937. doi: 10.1371/journal.pone.0054937

Figure 2. Relations between intention to quit smoking (Iq) and quit efficacy (Eq) by three levels of warning intensity (α) scaled from 0, .5. to 1.0.

Figure 2

Panel A shows the relation using eq. (5) with Es fixed at.5 and β at 3.0. Panel B shows the observed relation using scores predicted by regression model in Table 4 (step 1).