Effects of perceived cocaine availability on subjective and objective responses to the drug.

Group differences in the low ratings did not reach statistical significance (F 19,760 = 0.55, GG adjusted p = 0.73). 3.3 Hemodynamic responses Cocaine produced significantly higher heart rate increases in the 'unblinded' subjects (Figure 2 ) (group effect: F 1,41 = 7.26, p < 0.01; group-by-time interaction: F 19,779 = 3.25, GG adjusted p < 0.006; mean change from baseline: 30% versus 20%).

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