An Examination of Anxiety Sensitivity as a Moderator of the Relationship Between Smoking Level and Posttraumatic Stress Symptoms among Trauma-Exposed Adults

Relationship between anxiety sensitivity and post-traumatic stress symptoms in trauma-exposed adults: A meta-analysis

Given the high rate of trauma exposure among the general population, it is important to delineate the risk factors for post-traumatic stress disorder (PTSD). While historically implicated in panic disorder, anxiety sensitivity is increasingly found to play a role in PTSD. The present review investigated the size of the relationship between anxiety sensitivity and PTSD symptoms among trauma exposed adults. A systematic search on multiple electronic databases (PTSDpubs, CINAHL, MEDLINE and PsycINFO) generated a total of 1025 records, among which 52 (n = 15173) met study inclusion criteria and were included in our random effects meta-analysis. Our results indicated a medium effect size (r = .46, 95% CI =.41,.50) for the relationship between anxiety sensitivity and PTSD symptoms. There was significant between-study heterogeneity. Furthermore, sub-group analyses revealed that study design (cross-sectional vs. longitudinal) may significantly moderate the association between anxiety sensitivity and PTSD severity. No moderation effect was found for assessment of PTSD through interview versus questionnaire, interpersonal versus non-interpersonal trauma, or low versus high study quality. Such patterns of results are consistent with cognitive models of PTSD. Clinical implications, strengths and limitations of the review were discussed.

Post-Traumatic Orientation to Bodily Signals: A Systematic Literature Review

Theoretical literature suggests that trauma and (PTSD) may instigate changes in the interpretation of bodily signals. Some findings support these inquiries, revealing that exposure to traumatic events and PTSD are associated with pain catastrophizing, body vigilance, fear of pain, and other manifestations of bodily perceptions and interpretations. However, these findings are not integrated into an inclusive empirically based conceptualization, thus leading to a limited comprehension of this phenomenon. This systematic literature review was conducted to synthesize the existing literature referring to orientation to bodily signals. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, the review included a final of 48 manuscripts that addressed orientation to bodily signals among participants (aged 18 and above) and its potential associations with PTSD. The review revealed that most studies assessed one orientation manifestation, which was tested for its link to PTSD. The majority of the manuscripts were cross-sectional and included participants who faced combat, vehicle accidents, or various types of traumas. Only five manuscripts focused on interpersonal trauma and abuse. Most manuscripts reported significant correlations, revealing that trauma and PTSD are associated with a negative, catastrophic and frightful interpretation of bodily signals. These findings emphasize the need to encapsulate the various manifestations of orientation to bodily signals under a unified construct, as proposed by the term post-traumatic orientation to bodily signals. Further research is needed to illuminate the circumstances and processes by which trauma is implicated in post-traumatic orientation to bodily signals.

Anxiety sensitivity in relation to post-traumatic stress disorder symptom clusters among young adults with probable post-traumatic stress disorder

Despite the promise of past research on anxiety sensitivity (AS) and posttraumatic stress, extant work is limited, given (1) most studies consist of non-Hispanic White and middle-aged samples, (2) few have demonstrated incremental validity to general emotional traits and social determinants of health, and (3) limited work has characterized how AS relates to specific Posttraumatic Stress Disorder (PTSD) symptom clusters among those with (probable) PTSD. The current study evaluated the role of AS in relation to PTSD symptom clusters among a racially/ethnically diverse sample of young adults with probable PTSD. Participants included young adults who met the clinical cut-off for probable PTSD per the Posttraumatic Diagnostic Scale. Results indicated that AS was significantly related to overall posttraumatic stress symptom severity; the effect was evident after adjusting for a range of covariates including neuroticism and subjective social status. AS also was incrementally associated with arousal and hyperreactivity, changes in mood and cognition, and intrusion PTSD symptom clusters. In contrast to expectation, no effect for AS was evident for the avoidance PTSD symptom cluster. The current data uniquely add to the existing AS PTSD literature by showcasing distinct symptom cluster patterns among a racially/ethnically diverse sample of young adults with probable PTSD.

Posttraumatic stress disorder and cigarette smoking: A systematic review

BACKGROUND

Previous reviews of the PTSD and cigarette smoking literature showed high PTSD-smoking comorbidity and problematic smoking outcomes (Feldner et al., 2007, Clinical Psychology Review, 27, 14-45; Fu et al., 2007, Nicotine & Tobacco Research, 9, 1071-1084). However, past reviews also noted several prominent gaps in the literature, including a lack of etiological work examining underlying mechanisms and research on specialized PTSD-smoking treatments. The present review summarizes an extensive body of research conducted since the previous reviews targeting these areas of need.

METHODS

Literature searches identified 66 empirical studies specific to smoking and PTSD.

RESULTS

Smokers were approximately twice more likely to have PTSD than nonsmokers in the general population, and individuals with PTSD were approximately twice as likely to be current smokers. Smokers with PTSD evidenced more negative affect, trauma history, and comorbid psychiatric history, as well as quit attempts and higher relapse rates. PTSD symptoms were associated with expectations that smoking would reduce negative affect, which, in turn, was associated with increased smoking rate and nicotine dependence. Male sex was associated with nicotine dependence and PTSD avoidance, while the relationship between PTSD and smoking relapse due to withdrawal was stronger in females. Specialized, integrated PTSD and smoking cessation treatments showed promise in increasing quit success relative to standard care in randomized trials.

CONCLUSIONS

Rates of PTSD-smoking co-occurrence remain high. Notable gains have been made in relevant epidemiological and etiological research, although more work is needed in trauma-specific subpopulations. Several promising specialized treatments for comorbid smoking-PTSD have been developed and empirically tested but require replication.

Anxiety sensitivity in the association between posttraumatic stress and substance use disorders: A systematic review

Posttraumatic stress disorder (PTSD) and substance use disorders (SUD) are complex psychiatric conditions that commonly co-occur. No evidence-based, "gold standard" treatments for PTSD/SUD comorbidity are currently available. Thus, it is imperative to better understand cognitive-affective mechanisms, targetable via cognitive-behavioral intervention (i.e., malleable), that may be related to both disorders in order to improve the theory and treatment of PTSD/SUD. Anxiety sensitivity is a malleable cognitive-affective factor with relevance to both PTSD and SUD. This systematic review focused on the published literature on anxiety sensitivity and trauma/PTSD and substance use/SUD from 1966 - May 1, 2018, and includes a total of 35 manuscripts. The state of the literature, limitations, and future research directions are discussed.

Respiratory problems and anxiety sensitivity in smoking lapse among treatment seeking smokers

PURPOSE

The current study examined whether the interaction of lower respiratory symptoms and anxiety sensitivity is related to smoking lapse in the context of smoking cessation.

METHOD

Participants were adult daily smokers (N=60) exposed to the World Trade Center (WTC) disaster who were in a smoking cessation treatment program (75.0% male, 50.6years old [SD=9.2], and current smoking rate was 17.6 cigarettes per day (SD=10.6).

RESULTS

Results indicated that the interaction between lower respiratory symptoms and anxiety sensitivity was a significant predictor of greater risk for lapse (i.e., lower survival time; B=0.005, OR=1.01, p=0.039). Follow-up analysis showed that greater respiratory symptoms were a significant predictor of lapse risk among those with high (B=0.116, OR=1.12, p=0.025), but not those with low (B=-0.048, OR=0.95, p=0.322), levels of anxiety sensitivity.

DISCUSSION

The findings from the current study suggest that smokers with greater respiratory symptoms and higher levels of anxiety sensitivity may be associated with early lapse to smoking following smoking cessation treatment. Future work has the potential to inform the development of tailored cessation interventions for smokers who experience varying levels of lower respiratory symptoms and anxiety sensitivity.

Emotional nonacceptance within the context of traumatic event exposure: The explanatory role of anxiety sensitivity for traumatic stress symptoms and disability among Latinos in a primary care setting

OBJECTIVE

Research has found that Latinos (versus non-Latino Whites) evince higher rates of posttraumatic stress symptoms (PTS) and posttraumatic stress disorder (PTSD), yet little attention has been given to intra-individual, emotion-related processes to explicate the higher incidence of these symptoms among Latinos.

METHOD

Participants included 183 trauma-exposed adult Latinos (88.5% female; Mage=37.7, SD=10.7 and 93.4% reported Spanish as their first language) who attended a community-based primary healthcare clinic in Houston. It was hypothesized that anxiety sensitivity would explain the relation between emotional nonacceptance and traumatic stress symptoms, namely re-experiencing, avoidance, and arousal difficulties as well as overall disability. Additionally, it was expected that the observed effects would be evident above and beyond the variance accounted for by number of traumas reported, gender, age, marital status, educational status, years living in the U.S., and negative affectivity.

RESULTS

Consistent with our hypotheses, difficulties accepting negative emotions were associated with increased trauma-related re-experiencing, avoidance, and arousal difficulties. Additionally, anxiety sensitivity was an underlying mechanism in the association between emotional nonacceptance and all but one facet of traumatic stress symptoms (i.e., re-experiencing symptoms) and disability. Alternative models yielded no significant effects, providing greater confidence in the direction of the hypothesized effects.

CONCLUSION

Findings are discussed in the context of their significance for informing the development of specialized intervention strategies that target anxiety sensitivity for Latinos in primary care with elevated risk for PTS and PTSD by their heightened levels of emotional nonacceptance.

Anxiety sensitivity mediates the association between post-traumatic stress symptom severity and interoceptive threat-related smoking abstinence expectancies among World Trade Center disaster-exposed smokers

INTRODUCTION

Anxiety sensitivity (fear of internal anxiety-relevant bodily sensations) is an individual difference variable that is associated with the development and maintenance of posttraumatic stress disorder (PTSD) and is also involved in the maintenance/relapse of smoking. Abstinence expectancies are crucial to smoking maintenance, yet, past work has not explored how PTSD symptom severity and anxiety sensitivity contribute to them.

METHOD

Participants were 122 treatment-seeking daily smokers (36.1% female; Mage=49.2, SD=9.7; cigarettes per day: M=18.3, SD=15.2) who were exposed to the World Trade Center disaster on September 11, 2001 and responded to an advertisement for a clinical smoking cessation trial. The indirect effect of anxiety sensitivity was tested in terms of the effect of PTSD symptom severity on smoking abstinence expectancies (i.e., anxiety sensitivity as a statistical mediator).

RESULTS

PTSD symptom severity was positively associated with interoceptive threat-related smoking abstinence expectancies: expecting harmful consequences (β=.33, p<.001) and somatic symptoms (β=.26, p=.007). PTSD symptom severity was also significantly associated with anxiety sensitivity (β=.27, p=.003). Anxiety sensitivity mediated the association between PTSD symptom severity and expectancies about the harmful consequences (β=.09, CI95%=.02-.21; ΔR(2)=.076) and somatic symptoms (β=.11, CI95%=.02-.24; ΔR(2)=.123) from smoking abstinence, with medium effect sizes (Κ(2)=.08 and .10, respectively).

CONCLUSIONS

These data document the role of PTSD symptoms in threat-based expectancies about smoking abstinence and suggest anxiety sensitivity may underlie the associations between PTSD symptom severity and abstinence expectancies.

The effect of nicotine and trauma context on acoustic startle in smokers with and without posttraumatic stress disorder

RATIONALE

Exaggerated startle response is a prominent feature of posttraumatic stress disorder (PTSD) although results examining differences in the acoustic startle response (ASR) between those with and without PTSD are mixed. One variable that may affect ASR among persons with PTSD is smoking. Individuals with PTSD are more likely to smoke and have greater difficulty quitting smoking. While smokers with PTSD report that smoking provides significant relief of negative affect and PTSD symptoms, the effects of smoking or nicotine deprivation on startle reactivity among smokers with PTSD are unknown.

OBJECTIVES

The purposes of the current study were to (1) examine baseline acoustic startle response (ASR) in smokers with and without PTSD under conditions of overnight abstinence, (2) evaluate the effect of smoking on ASR, and (3) evaluate the contextual effects of trauma versus neutral script presentations.

METHODS

ASR was measured among 48 smokers with and without PTSD in the context of a 2 (group: PTSD vs. non-PTSD) x 2 (context: trauma vs. neutral) x 3 (smoking condition: usual brand cigarette vs. denicotinized cigarette vs. no smoking) design.

RESULTS

Effects of modest size indicated that (1) PTSD participants demonstrated higher ASR (2) compared to non-PTSD participants, PTSD participants reported greater negative affect following a trauma-related script, and (3) following a trauma-related script and smoking a usual brand cigarette, PTSD participants demonstrated higher ASR.

CONCLUSIONS

Although many smokers with PTSD report that smoking reduces PTSD symptoms, results suggest that smoking may actually potentiate or maintain an exaggerated startle response.

Smoking and posttraumatic stress symptoms among adolescents: does anxiety sensitivity matter?

The present study examined the hypothesized moderating role of anxiety sensitivity (AS) in the relationship between lifetime smoking history and posttraumatic stress symptoms among 64 traumatic event-exposed adolescents. As predicted, the relationship between smoking status and posttraumatic stress symptom levels was moderated by AS. Specific facets of AS also were examined. Disease concerns, but not unsteady, mental illness, or social concerns, moderated the association between smoking and symptom level. These findings are generally consistent with findings from adult samples, but importantly extend this area of research to another phase of the lifespan.

An integrated approach to panic prevention targeting the empirically supported risk factors of smoking and anxiety sensitivity: theoretical basis and evidence from a pilot project evaluating feasibility and short-term efficacy

Consistent with a risk reduction model of targeted prevention, the present investigation piloted and empirically evaluated the feasibility and short-term efficacy of a first-generation panic prevention program that targeted two malleable risk factors for panic development-anxiety sensitivity and daily cigarette smoking. Members of a high risk cohort, defined by high levels of anxiety sensitivity and current daily smoking (n=96), were randomly assigned to either (1) a one session intervention focused on proximally increasing motivation to quit smoking and reducing anxiety sensitivity to distally prevent the development of panic or (2) a health information control condition of comparable length. Participants were followed for 6 months. Consistent with hypotheses, those in the treatment condition showed reduced anxiety sensitivity and this effect was maintained across the follow-up period. Limited evidence also suggested the intervention increased motivation to quit smoking. We discuss how this prevention protocol can be modified in the future to enhance its effects as part of second-generation larger-scale outcome evaluations.