Category: Adult Anxiety

Symposium

Growth Mixture Modeling as a Tool to Uncover Treatment Response in a Prevention-Focused Anxiety Intervention

Saturday, November 18
12:00 PM - 1:30 PM
Location: Indigo Ballroom E, Level 2, Indigo Level

Keywords: Adult Anxiety | Smoking | Prevention
Presentation Type: Symposium

Extant research has identified numerous risk factors for the development of panic psychopathology including anxiety sensitivity (AS; fear of arousal-related sensations) and smoking. As such, smokers with elevated levels of AS represent a particularly vulnerable population for the development panic attacks and anxiety. Researchers have begun to evaluate interventions that may concurrently target these constructs in one overarching model. Indeed, a recent prospective evaluation by our group (Schmidt et al., 2016) revealed modest reductions in AS among a group of daily smokers enrolled in a Panic-Smoking Prevention Program (PSP) compared to a Standard Smoking Prevention Program (SSP). Although an examination of overall effects is important for understanding the efficacy of such interventions, these approaches do not allow for the identification of homogenous subpopulations with differential treatment responding. Thus, the current study was designed to extract unknown classes of treatment responders in a sample of 384 adult daily smokers (M age = 38.65, SD = 13.68) receiving a PSP or an SSP intervention. A secondary aim was to examine differences in baseline predictors of treatment trajectories, including smoking- and anxiety-related variables. Results revealed three distinct trajectories in the PSP condition, a High-Declining AS class (N = 23), a High-Stable AS class (N = 59), and a Low-Declining AS class (N = 136). Resulted revealed two trajectories in the SSP condition, a Moderate-Stable AS class (N = 54) and a Low-Stable AS class (N = 112). Whereas differences in trajectories emerged in the PSP protocol, the two trajectories that emerged in the SSP differed primarily on initial intercept values. Comparing baseline characteristics in the PSP, no differences emerged in smoking-related variables. In contrast, differences in baseline anxiety emerged, including rates of anxiety disorder diagnoses, such that 70% of individuals in the High-Declining AS class met for an anxiety disorder, compared to 27% and 28% in the Moderate-Stable and Low-Declining AS classes, respectively. Findings will be discussed with regard to treatment implications and future research. 

Amanda Medley. Raines

Post-Doctoral Fellow
Southeast Louisiana Veterans HealthCare System

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