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Logo of nihpaAbout Author manuscriptsSubmit a manuscriptNIH Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
Health Psychol. Author manuscript; available in PMC Jun 30, 2009.
Published in final edited form as:
Health Psychol. Jul 2007; 26(4): 496–506.
doi: 10.1037/0278-6133.26.4.496
Table 1
Adjusted Mean Change in Perceived Risk, Knowledge, and Behavior as a Function of Fear Inducement and HIV Counseling and Testing
Immediate follow-up
Delayed follow-up
Intervention strategy and change dimensionPresenceAbsenceDifferenceQB(1)PresenceAbsenceDifferenceQB(1)Comparison F
Fear-inducing arguments
    Perceived risk0.27−0.200.475.27*0.07−0.330.400.314.96**
HIV counseling and testing
    Perceived risk−2.220.18−2.40730.13***−2.650.00−2.65202.53***527.60***
Note. d = weighted mean difference; QB = between-categories homogeneity index with number of levels of factor – 1 degree of freedom. Differences are differences between the d when the strategy was present versus absent. Significant QBs indicate significant effects of the interventions relative to control study groups. The first QB in the table compared the effect at the time of the immediate follow-up and the second at the time of the delayed follow-up. The comparison F reflects changes in QBs from immediate to delayed follow-up. The weighted means for control study groups at immediate follow-up were perceived risk d = 0.01, knowledge d = 0.08, and condom use d = 0.04. The weighted means for control study groups at delayed follow-up were perceived risk d = −0.07, knowledge d = 0.11, and condom use d = −0.03.
*p < .05.
**p < .01.
***p < .001.