Wednesday, February 4, 2009

Lab topics for this week:

Lab topics for this week:

1. The CDC grant
2. Two interesting articles from Health Psych. today. Both deal with affect and health behavior.

Lawton R, Conner M, McEachan R. Desire or Reason: Predicting Health Behaviors From Affective and Cognitive Attitudes. Health Psychology. Jan 2009;28(1):56-65. Link

...affective attitude was a significantly more powerful predictor of behavior than cognitive attitude for 9 behaviors. Also, affective attitude had a direct effect on behavior that was not fully mediated by intention for 9 behaviors... ...The findings underscore the importance of affect in the performance of health-related behaviors and suggest that interventions could usefully target the affective consequences of engaging in these behaviors.

Safren SA, O'Cleirigh C, Tan JY, et al. A Randomized Controlled Trial of Cognitive Behavioral Therapy for Adherence and Depression (CBT-AD) in HIV-Infected Individuals. Health Psychology. Jan 2009;28(1):1-10.

...those who received CBT-AD evidenced significantly greater improvements in medication adherence and depression relative to the comparison group. Those who were originally assigned to the comparison group who chose to cross over to CBT-AD showed similar improvements in both depression and adherence outcomes. Treatment gains for those in the intervention group were generally maintained at 6-and 12-month follow-up assessments. By the end of the follow-up period, those originally assigned CBT-AD demonstrated improvements in plasma HIV RNA concentrations ...

This is really an important finding, using a very sophisticated design - the roll-over condition helps both with statistical power and study ethics.

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