Cognitive and performance-based treatments for panic attacks in people with varying degrees of agoraphobic disability

Comparative efficacy and acceptability of psychotherapies for panic disorder with or without agoraphobia: systematic review and network meta-analysis of randomised controlled trials

BACKGROUND

Psychotherapies are the treatment of choice for panic disorder, but which should be considered as first-line treatment is yet to be substantiated by evidence.

AIMS

To examine the most effective and accepted psychotherapy for the acute phase of panic disorder with or without agoraphobia via a network meta-analysis.

METHOD

We conducted a systematic review and network meta-analysis of randomised controlled trials (RCTs) to examine the most effective and accepted psychotherapy for the acute phase of panic disorder. We searched MEDLINE, Embase, PsycInfo and CENTRAL, from inception to 1 Jan 2021 for RCTs. Cochrane and PRISMA guidelines were used. Pairwise and network meta-analyses were conducted using a random-effects model. Confidence in the evidence was assessed using Confidence in Network Meta-Analysis (CINeMA). The protocol was published in a peer-reviewed journal and in PROSPERO (CRD42020206258).

RESULTS

We included 136 RCTs in the systematic review. Taking into consideration efficacy (7352 participants), acceptability (6862 participants) and the CINeMA confidence in evidence appraisal, the best interventions in comparison with treatment as usual (TAU) were cognitive-behavioural therapy (CBT) (for efficacy: standardised mean differences s.m.d. = -0.67, 95% CI -0.95 to -0.39; CINeMA: moderate; for acceptability: relative risk RR = 1.21, 95% CI -0.94 to 1.56; CINeMA: moderate) and short-term psychodynamic therapy (for efficacy: s.m.d. = -0.61, 95% CI -1.15 to -0.07; CINeMA: low; for acceptability: RR = 0.92, 95% CI 0.54-1.54; CINeMA: moderate). After removing RCTs at high risk of bias only CBT remained more efficacious than TAU.

CONCLUSIONS

CBT and short-term psychodynamic therapy are reasonable first-line choices. Studies with high risk of bias tend to inflate the overall efficacy of treatments. Results from this systematic review and network meta-analysis should inform clinicians and guidelines.

The Temporal Relationship Between Coping Self-Efficacy and Dissociation in Undergraduate Students

Dissociation is a lack of information integration resulting from a process that ranges on a continuum from normative experiences (e.g., daydreaming) to a pervasive traumatic response involving alterations and/or fragmentation in mental processes such as memory, emotion, and perception. Perceived coping self-efficacy (CSE) is a cognitive appraisal ability utilized to regulate internal and external stressors that arise from traumatic events, and is crucial for effective adaptation after extreme stress or trauma. Thus, CSE may be a critical component in decreasing dissociative experiences following a traumatic event. In the present study, 136 undergraduate students (M age = 22.36 years, SD = 6.27; 81% female, 69.1% Caucasian, 77.2% attended some college) completed self-report measures of trauma, dissociation, and coping self-efficacy. All measures were completed by the same participants at two different time points (Time 1 and Time 2) two months apart; all participants reported a history of exposure to at least one Criterion A traumatic event (according to the DSM-5) at Time 1. We hypothesized that CSE for posttraumatic coping demands at Time 2 would mediate the relationship between dissociation at Time 1 and dissociation at Time 2, and subsequently found evidence of significant mediation, 95% CI [.02, .18]. These findings suggest that initial levels of persistent dissociation negatively predict CSE, which in turn directly and negatively influence persistent dissociation at a later time point. This highlights how CSE may serve as a protective factor against persistent dissociation.

Brief Therapist-Guided Exposure Treatment of Panic Attacks: A Pilot Study

A three-session therapist-guided exposure treatment was tested in a consecutive series of eight primary health care patients suffering from panic attacks who specifically used distraction techniques as their primary safety behavior. The Panic Disorder Severity Scale Self-Report (PDSS-SR) was administered at baseline (1-3 weeks before the first session), and 1, 2, and 3 weeks after treatment. Weekly ratings on the Body Sensations Questionnaire (BSQ) and the Agoraphobic Cognitions Questionnaire (ACQ) during treatment were undertaken to explore when reliable change took place on these measures. The results showed a large within-group effect size on PDSS-SR ( d = 1.63); six of the eight patients were classified as responders, and four of them showed remission. Large effect sizes ( ds between 1.17 and 3.00) were seen also on BSQ and ACQ, as well as on agoraphobic avoidance, general level of anxiety, and depression. The results on BSQ and ACQ suggest that the fear of body sensations in most cases was reduced before a change occurred in agoraphobic cognitions. These results indicate that a brief three-session exposure-based treatment may be sufficient for this subgroup of panic patients. The findings need to be replicated under controlled conditions with larger samples and different therapists before more firm conclusions can be drawn. Future research should also focus on the relevance of dividing patients into subgroups based on type of safety behavior.

Cognitive-Behavioral Therapy: Nature and Relation to Non-Cognitive Behavioral Therapy

Since the introduction of Beck's cognitive theory of emotional disorders, and their treatment with psychotherapy, cognitive-behavioral approaches have become the most extensively researched psychological treatment for a wide variety of disorders. Despite this, the relative contribution of cognitive to behavioral approaches to treatment are poorly understood and the mechanistic role of cognitive change in therapy is widely debated. We critically review this literature, focusing on the mechanistic role of cognitive change across cognitive and behavioral therapies for depressive and anxiety disorders.

How effective are cognitive behavior therapies for major depression and anxiety disorders? A meta-analytic update of the evidence

We report the current best estimate of the effects of cognitive behavior therapy (CBT) in the treatment of major depression (MDD), generalized anxiety disorder (GAD), panic disorder (PAD) and social anxiety disorder (SAD), taking into account publication bias, the quality of trials, and the influence of waiting list control groups on the outcomes. In our meta-analyses, we included randomized trials comparing CBT with a control condition (waiting list, care-as-usual or pill placebo) in the acute treatment of MDD, GAD, PAD or SAD, diagnosed on the basis of a structured interview. We found that the overall effects in the 144 included trials (184 comparisons) for all four disorders were large, ranging from g=0.75 for MDD to g=0.80 for GAD, g=0.81 for PAD, and g=0.88 for SAD. Publication bias mostly affected the outcomes of CBT in GAD (adjusted g=0.59) and MDD (adjusted g=0.65), but not those in PAD and SAD. Only 17.4% of the included trials were considered to be high-quality, and this mostly affected the outcomes for PAD (g=0.61) and SAD (g=0.76). More than 80% of trials in anxiety disorders used waiting list control groups, and the few studies using other control groups pointed at much smaller effect sizes for CBT. We conclude that CBT is probably effective in the treatment of MDD, GAD, PAD and SAD; that the effects are large when the control condition is waiting list, but small to moderate when it is care-as-usual or pill placebo; and that, because of the small number of high-quality trials, these effects are still uncertain and should be considered with caution.

Psychological therapies for panic disorder with or without agoraphobia in adults: a network meta-analysis

BACKGROUND

Panic disorder is characterised by the presence of recurrent unexpected panic attacks, discrete periods of fear or anxiety that have a rapid onset and include symptoms such as racing heart, chest pain, sweating and shaking. Panic disorder is common in the general population, with a lifetime prevalence of 1% to 4%. A previous Cochrane meta-analysis suggested that psychological therapy (either alone or combined with pharmacotherapy) can be chosen as a first-line treatment for panic disorder with or without agoraphobia. However, it is not yet clear whether certain psychological therapies can be considered superior to others. In order to answer this question, in this review we performed a network meta-analysis (NMA), in which we compared eight different forms of psychological therapy and three forms of a control condition.

OBJECTIVES

To assess the comparative efficacy and acceptability of different psychological therapies and different control conditions for panic disorder, with or without agoraphobia, in adults.

SEARCH METHODS

We conducted the main searches in the CCDANCTR electronic databases (studies and references registers), all years to 16 March 2015. We conducted complementary searches in PubMed and trials registries. Supplementary searches included reference lists of included studies, citation indexes, personal communication to the authors of all included studies and grey literature searches in OpenSIGLE. We applied no restrictions on date, language or publication status.

SELECTION CRITERIA

We included all relevant randomised controlled trials (RCTs) focusing on adults with a formal diagnosis of panic disorder with or without agoraphobia. We considered the following psychological therapies: psychoeducation (PE), supportive psychotherapy (SP), physiological therapies (PT), behaviour therapy (BT), cognitive therapy (CT), cognitive behaviour therapy (CBT), third-wave CBT (3W) and psychodynamic therapies (PD). We included both individual and group formats. Therapies had to be administered face-to-face. The comparator interventions considered for this review were: no treatment (NT), wait list (WL) and attention/psychological placebo (APP). For this review we considered four short-term (ST) outcomes (ST-remission, ST-response, ST-dropouts, ST-improvement on a continuous scale) and one long-term (LT) outcome (LT-remission/response).

DATA COLLECTION AND ANALYSIS

As a first step, we conducted a systematic search of all relevant papers according to the inclusion criteria. For each outcome, we then constructed a treatment network in order to clarify the extent to which each type of therapy and each comparison had been investigated in the available literature. Then, for each available comparison, we conducted a random-effects meta-analysis. Subsequently, we performed a network meta-analysis in order to synthesise the available direct evidence with indirect evidence, and to obtain an overall effect size estimate for each possible pair of therapies in the network. Finally, we calculated a probabilistic ranking of the different psychological therapies and control conditions for each outcome.

MAIN RESULTS

We identified 1432 references; after screening, we included 60 studies in the final qualitative analyses. Among these, 54 (including 3021 patients) were also included in the quantitative analyses. With respect to the analyses for the first of our primary outcomes, (short-term remission), the most studied of the included psychological therapies was CBT (32 studies), followed by BT (12 studies), PT (10 studies), CT (three studies), SP (three studies) and PD (two studies).The quality of the evidence for the entire network was found to be low for all outcomes. The quality of the evidence for CBT vs NT, CBT vs SP and CBT vs PD was low to very low, depending on the outcome. The majority of the included studies were at unclear risk of bias with regard to the randomisation process. We found almost half of the included studies to be at high risk of attrition bias and detection bias. We also found selective outcome reporting bias to be present and we strongly suspected publication bias. Finally, we found almost half of the included studies to be at high risk of researcher allegiance bias.Overall the networks appeared to be well connected, but were generally underpowered to detect any important disagreement between direct and indirect evidence. The results showed the superiority of psychological therapies over the WL condition, although this finding was amplified by evident small study effects (SSE). The NMAs for ST-remission, ST-response and ST-improvement on a continuous scale showed well-replicated evidence in favour of CBT, as well as some sparse but relevant evidence in favour of PD and SP, over other therapies. In terms of ST-dropouts, PD and 3W showed better tolerability over other psychological therapies in the short term. In the long term, CBT and PD showed the highest level of remission/response, suggesting that the effects of these two treatments may be more stable with respect to other psychological therapies. However, all the mentioned differences among active treatments must be interpreted while taking into account that in most cases the effect sizes were small and/or results were imprecise.

AUTHORS' CONCLUSIONS

There is no high-quality, unequivocal evidence to support one psychological therapy over the others for the treatment of panic disorder with or without agoraphobia in adults. However, the results show that CBT - the most extensively studied among the included psychological therapies - was often superior to other therapies, although the effect size was small and the level of precision was often insufficient or clinically irrelevant. In the only two studies available that explored PD, this treatment showed promising results, although further research is needed in order to better explore the relative efficacy of PD with respect to CBT. Furthermore, PD appeared to be the best tolerated (in terms of ST-dropouts) among psychological treatments. Unexpectedly, we found some evidence in support of the possible viability of non-specific supportive psychotherapy for the treatment of panic disorder; however, the results concerning SP should be interpreted cautiously because of the sparsity of evidence regarding this treatment and, as in the case of PD, further research is needed to explore this issue. Behaviour therapy did not appear to be a valid alternative to CBT as a first-line treatment for patients with panic disorder with or without agoraphobia.

The mediational role of panic self-efficacy in cognitive behavioral therapy for panic disorder: a systematic review and meta-analysis

Cognitive models of panic disorder (PD) with or without agoraphobia have stressed the role of catastrophic beliefs of bodily symptoms as a central mediating variable of the efficacy of cognitive behavioral therapy (CBT). Perceived ability to cope with or control panic attacks, panic self-efficacy, has also been proposed to play a key role in therapeutic change; however, this cognitive factor has received much less attention in research. The aim of the present review is to evaluate panic self-efficacy as a mediator of therapeutic outcome in CBT for PD using descriptive and meta-analytic procedures. We performed systematic literature searches, and included and evaluated 33 studies according to four criteria for establishing mediation. Twenty-eight studies, including nine randomized waitlist-controlled studies, showed strong support for CBT improving panic self-efficacy (criterion 1); ten showed an association between change in panic self-efficacy and change in outcome during therapy (criterion 2); three tested, and one established formal statistical mediation of panic self-efficacy (criterion 3); while four tested and three found change in panic self-efficacy occurring before the reduction of panic severity (criterion 4). Although none of the studies fulfilled all of the four criteria, results provide some support for panic self-efficacy as a mediator of outcome in CBT for PD, generally on par with catastrophic beliefs in the reviewed studies.

Mechanisms of change in cognitive behaviour therapy for panic disorder: the role of panic self-efficacy and catastrophic misinterpretations

The efficacy of cognitive behavioural therapy (CBT) for panic disorder with or without agoraphobia (PD) is well-established; however, little is known about the underlying change processes of clinical improvement during therapy. According to cognitive theories, CBT for PD primarily works by changing catastrophic misinterpretations of bodily symptoms and panic attacks. However, panic self-efficacy, i.e. the perceived ability to cope with panic attacks, has also been suggested as an important change mechanism in CBT for PD. The aim of the study was to investigate if change in catastrophic misinterpretations and panic self-efficacy mediated change in the level of anxiety during the course of thirteen sessions of group CBT for PD. Forty-five participants completed weekly self-report measures of the possible cognitive mediators and the level of anxiety throughout therapy. The results indicated that within-person change in panic self-efficacy in one session, but not in catastrophic misinterpretations, predicted within-person level of anxiety symptoms the following week. However, in a reversed analysis, prior change in level of anxiety symptoms also predicted change in panic self-efficacy the following session. These results support panic self-efficacy as a mediator of change in CBT for PD, although a reciprocal causal relationship between panic self-efficacy and level of anxiety seems to be implied.

Coping skills and exposure therapy in panic disorder and agoraphobia: latest advances and future directions

Although cognitive-behavioral treatments for panic disorder have demonstrated efficacy, a considerable number of patients terminate treatment prematurely or remain symtpomatic. Cognitive and biobehavioral coping skills are taught to improve exposure therapy outcomes but evidence for an additive effect is largely lacking. Current methodologies used to study the augmenting effects of coping skills test the degree to which the delivery of coping skills enhances outcomes. However, they do not assess the degree to which acquisition of coping skills and their application during exposure therapy augment outcomes. We examine the extant evidence on the role of traditional coping skills in augmenting exposure for panic disorder, discuss the limitations of existing research, and offer recommendations for methodological advances.

Efficacy of exposure versus cognitive therapy in anxiety disorders: systematic review and meta-analysis

BACKGROUND

There is growing evidence of the effectiveness of Cognitive Behavioural Therapy (CBT) for a wide range of psychological disorders. There is a continued controversy about whether challenging maladaptive thoughts rather than use of behavioural interventions alone is associated with the greatest efficacy. However little is known about the relative efficacy of various components of CBT. This review aims to compare the relative efficacy of Cognitive Therapy (CT) versus Exposure (E) for a range of anxiety disorders using the most clinically relevant outcome measures and estimating the summary relative efficacy by combining the studies in a meta-analysis.

METHODS

Psych INFO, MEDLINE and EMBASE were searched from the first available year to May 2010. All randomised controlled studies comparing the efficacy of exposure with cognitive therapy were included. Odds ratios (OR) or standardised means' differences (Hedges' g) for the most clinically relevant primary outcomes were calculated. Outcomes of the studies were grouped according to specific disorders and were combined in meta-analyses exploring short-term and long-term outcomes.

RESULTS

20 Randomised Controlled Trials with (n = 1,308) directly comparing the efficacy of CT and E in anxiety disorders were included in the meta-analysis. No statistically significant difference in the relative efficacy of CT and E was revealed in Post Traumatic Stress Disorder (PTSD), in Obsessive Compulsive Disorder (OCD) and in Panic Disorder (PD). There was a statistically significant difference favouring CT versus E in Social Phobia both in the short-term (Z = 3.72, p = 0.0002) and the long-term (Z = 3.28, p = 0.001) outcomes.

CONCLUSIONS

On the basis of extant literature, there appears to be no evidence of differential efficacy between cognitive therapy and exposure in PD, PTSD and OCD and strong evidence of superior efficacy of cognitive therapy in social phobia.

Assessing and Treating Patient With Chronic Panic Disorder Using Cognitive-Constructive Psychotherapy

In cognitive-constructive psychotherapy, the aim is to understand the origins of a mental health problem beginning from the early attachment relationship, which is thought to regulate later interaction with the environment. People participate in this interaction consciously and unconsciously in keeping with their expectations and receive information in accordance with these expectations. The ways in which information is processed are thus strengthened and the significances given to experiences become stabilized. As people have a need to maintain an experience of the continuity of the self and of the consistency of their inner world, they will also hold on to harmful experiences. That is why change takes time, especially in the case of long-term disturbances. A patient with panic disorder perceives the world through a feeling of security and insecurity, which is regulated by a sense of control in particular. This article describes the psychotherapy process of a patient with panic disorder. In this process, recovery is explained based on a cognitive-constructive framework.

World Federation of Societies of Biological Psychiatry (WFSBP) guidelines for the pharmacological treatment of anxiety, obsessive-compulsive and post-traumatic stress disorders - first revision

In this report, which is an update of a guideline published in 2002 (Bandelow et al. 2002, World J Biol Psychiatry 3:171), recommendations for the pharmacological treatment of anxiety disorder, obsessive-compulsive disorder (OCD) and post-traumatic stress disorder (PTSD) are presented. Since the publication of the first version of this guideline, a substantial number of new randomized controlled studies of anxiolytics have been published. In particular, more relapse prevention studies are now available that show sustained efficacy of anxiolytic drugs. The recommendations, developed by the World Federation of Societies of Biological Psychiatry (WFSBP) Task Force for the Pharmacological Treatment of Anxiety, Obsessive-Compulsive and Post-traumatic Stress Disorders, a consensus panel of 30 international experts, are now based on 510 published randomized, placebo- or comparator-controlled clinical studies (RCTs) and 130 open studies and case reports. First-line treatments for these disorders are selective serotonin reuptake inhibitors (SSRIs), serotonin-noradrenaline reuptake inhibitors (SNRIs) and the calcium channel modulator pregabalin. Tricyclic antidepressants (TCAs) are equally effective for some disorders, but many are less well tolerated than the SSRIs/SNRIs. In treatment-resistant cases, benzodiazepines may be used when the patient does not have a history of substance abuse disorders. Potential treatment options for patients unresponsive to standard treatments are described in this overview. Although these guidelines focus on medications, non-pharmacological were also considered. Cognitive behavioural therapy (CBT) and other variants of behaviour therapy have been sufficiently investigated in controlled studies in patients with anxiety disorders, OCD, and PTSD to support them being recommended either alone or in combination with the above medicines.

Combined psychotherapy plus benzodiazepines for panic disorder

BACKGROUND

The efficacy of combining psychotherapy and benzodiazepines for panic disorder is unclear, despite widespread use.

OBJECTIVES

To examine the efficacy of the combination compared with either treatment alone.

SEARCH STRATEGY

Randomised trials comparing the combination of psychotherapy and benzodiazepine with either therapy alone for panic disorder were identified. The Cochrane Depression, Anxiety and Neurosis Group Studies and References Registers were searched. References of relevant trials and other reviews were checked. Experts in the field were contacted. Additional unpublished data were sought from authors of the original trials.

SELECTION CRITERIA

Two authors independently checked the records retrieved by the searches to identify randomised trials comparing the combined therapy versus either of the monotherapies, among adults with panic disorder.

DATA COLLECTION AND ANALYSIS

Two authors independently checked eligibility, assessed quality and extracted data from the eligible trials using a standardised data extraction form. The primary outcome was "response" based on global judgement. Random-effects meta-analyses were conducted, combining data from included trials.

MAIN RESULTS

Three trials met eligibility criteria. A 16-week behaviour therapy intervention was used in two trials, and a 12-week cognitive-behaviour therapy intervention in the third. Duration of follow-up varied, ranging from 0 to 12 months. Two trials (total 166 participants) provided data comparing combination with psychotherapy alone (both using behaviour therapy). No statistically significant differences were observed in response during the intervention (relative risk (RR) for combination 1.25, 95% CI 0.78 to 2.03, P = 0.35), at the end of the intervention (RR 0.78, 0.45 to 1.35, P = 0.37), or at the last follow-up time point, although the follow-up data suggested that the combination might be inferior to behaviour therapy alone (RR 0.62, 0.36 to 1.07, P = 0.08). One trial (77 participants) compared combination with a benzodiazepine alone. No differences were found in response during the intervention (RR 1.57, 0.83 to 2.98, P = 0.17). Although the combination appeared to be superior to the benzodiazepine alone at the end of treatment (RR 3.39, 1.03 to 11.21, P = 0.05) the finding was only borderline statistically significant, and no significant differences were observed at the 7-month follow-up (RR 2.31, 0.79 to 6.74, P = 0.12).

AUTHORS' CONCLUSIONS

The review established the paucity of high quality evidence investigating the efficacy of psychotherapy combined with benzodiazepines for panic disorder. Currently, there is inadequate evidence to assess the clinical effects of psychotherapy combined with benzodiazepines for patients who are diagnosed with panic disorder.

Treatment of panic disorder with agoraphobia: randomized placebo-controlled trial of four psychosocial treatments combined with imipramine or placebo

Few randomized controlled trials have included panic disorder patients with moderate to severe agoraphobia. Therefore, this population was studied using pharmacotherapy as well as psychotherapy. At the time of the study, imipramine was widely used as a pharmacological treatment. Also, current practice guidelines for patients with panic disorder find selective serotonin reuptake inhibitors and tricyclic antidepressants roughly comparable in terms of efficacy. Therefore, the main objective of this study is to compare four psychosocial treatments-cognitive and graded in vivo exposure treatments, graded in vivo exposure, cognitive treatment, and supportive therapy-to evaluate the benefits of combining cognitive therapy with exposure in vivo. These treatments were combined with imipramine or placebo for a total of eight experimental conditions. Participants presented moderate to severe agoraphobia. The method involved a randomized, double-blind, placebo-controlled trial with 137 participants who completed a 14-session protocol involving the treatments just mentioned. Measures were taken at baseline and posttreatment and at 3-, 6-, and 12-month follow-up. All treatment conditions were statistically and clinically effective in reducing self-reported panic-agoraphobia symptoms over the 1-year follow-up. No statistical differences were observed between imipramine and placebo conditions. This study found that all treatment modalities helped reduce panic and agoraphobic symptomatology over a 1-year follow-up period. These surprising results support the need to document the relations among the various components of an intervention. This would make it possible to assess the relative efficacy of the treatment components rather than of the intervention as a whole.

A Pilot Study of Sensation-Focused Intensive Treatment for Panic Disorder With Moderate to Severe Agoraphobia: Preliminary Outcome and Benchmarking Data

This report presents results of a treatment for panic disorder with moderate to severe agoraphobia (PDA-MS) called sensation-focused intensive treatment (SFIT). SFIT is an 8-day intensive treatment that combines features of cognitive— behavioral treatment for panic disorder, such as interoceptive exposure and cognitive restructuring with ungraded situational exposure. SFIT focuses on feared physical sensations as well as agoraphobic avoidance. Preliminary data support the utility of SFIT in improving PDA-MS. The goal of this exploratory study was to further investigate the effectiveness of SFIT and evaluate factors related to treatment outcome, including severity of panic symptoms, gender, comorbidity, self-efficacy, and place of residence (local vs. remote). SFIT was found to be effective in decreasing panic symptoms from pre- to posttreatment, with treatment gains maintained at follow-up. The implications of these findings for the treatment of PDA are discussed.

Meta-analysis of randomized controlled comparisons of psychopharmacological and psychological treatments for anxiety disorders

BACKGROUND

A number of meta-analyses have led to contradictory results regarding the efficacy of the psychological and pharmacological treatment of anxiety disorders. The main reasons for these inconsistent results seem to be the inclusion of heterogeneous studies and influences of selection biases. We performed a meta-analysis, which only included studies using a direct comparison of pharmacological, psychological, or combined treatments.

METHOD

Sixteen studies on panic disorder, six studies on social anxiety disorder, and two studies on generalized anxiety disorder have been analyzed. Effect sizes for differences between the different treatment modalities were calculated. Also, the effect sizes of the pre-post differences were calculated.

RESULTS

Pharmacological treatment, cognitive-behavioural treatment, and the combination of both treatment modalities all led to substantial improvement between pre- and post-treatment. Combined pharmacological and psychological treatment was superior to the monotherapies for panic disorder. For social anxiety disorder, there is only preliminary support for combined treatment. Due to lack of sufficient data, no final conclusions can be drawn for generalized anxiety disorder.

CONCLUSIONS

While drug treatment and CBT showed equal efficacy, only in panic disorder the combination of pharmacological and psychological treatment was superior to either treatment alone. For the other anxiety disorders, the evidence for greater efficacy of combination treatment is still not sufficient due to lack of studies.

Cognitive behavioral therapy for panic disorder and comorbidity: More of the same or less of more?

This study compared the effects of a higher dose of cognitive behavioral therapy (CBT) for panic disorder versus CBT for panic disorder combined with "straying" to CBT for comorbid disorders in individuals with a principal diagnosis of panic disorder with or without agoraphobia. Sixty-five participants were randomly assigned to one of two treatment conditions, either CBT focused solely upon panic disorder and agoraphobia or CBT that simultaneously addressed panic disorder and agoraphobia and, to a lesser degree, the most severe comorbid condition. Results indicated a significant reduction in panic disorder severity and a decline in severity of comorbid diagnoses across both treatment conditions. However, individuals receiving CBT focused only on panic disorder were more likely to meet high end-state functioning at post-treatment, even in intent-to-treat analyses, and report zero panic attacks at the 1-year follow-up, although this effect was not retained in intent-to-treat analyses. At follow-up, CBT focused only on panic disorder yielded more substantial improvement in the most severe baseline comorbid condition, although not in intent-to-treat analyses, and a greater proportion of individuals in this treatment condition were rated as having no comorbid diagnoses, even in intent-to-treat analyses. These findings raise the possibility that remaining focused on CBT for panic disorder may be more beneficial for both principal and comorbid diagnoses than combining CBT for panic disorder with 'straying' to CBT for comorbid disorders.

Combination of psychotherapy and benzodiazepines versus either therapy alone for panic disorder: a systematic review

BACKGROUND

The efficacy of combined psychotherapy and benzodiazepine treatment for panic disorder is still unclear despite its widespread use. The present systematic review aims to examine its efficacy compared with either monotherapy alone.

METHODS

All randomised trials comparing combined psychotherapy and benzodiazepine for panic disorder with either therapy alone were identified by comprehensive electronic search on the Cochrane Registers, by checking references of relevant studies and of other reviews, and by contacting experts in the field. Two reviewers independently checked eligibility of trials, assessed quality of trials and extracted data from eligible trials using a standardized data extraction form. Our primary outcome was "response" defined by global judgement. Authors of the original trials were contacted for further unpublished data. Meta-analyses were undertaken synthesizing data from all relevant trials.

RESULTS

Only two studies, which compared the combination with behaviour (exposure) therapy, met our eligibility criteria. Both studies had a 16-week intervention. Unpublished data were retrieved for one study. The relative risk for response for the combination was 1.25 (95%CI: 0.78 to 2.03) during acute phase treatment, 0.78 (0.45 to 1.35) at the end of treatment, and 0.62 (0.36 to 1.07) at 6-12 months follow-up. Some secondary outcomes hinted at superiority of the combination during acute phase treatment. One study was identified comparing the combination to benzodiazepine. The relative risk for response was 1.57 (0.83 to 2.98), 3.39 (1.03 to 11.21, statistically significant) and 2.31 (0.79 to 6.74) respectively. The superiority of the combination was observed on secondary outcomes at all the time points. No sub-group analyses were conducted due to the limited number of included trials.

CONCLUSION

Unlike some narrative reviews in the literature, our systematic search established the paucity of high quality evidence for or against the combined psychotherapy plus benzodiazepine therapy for panic disorder. Based on limited available published and unpublished data, however, the combined therapy is probably to be recommended over benzodiazepine alone for panic disorder with agoraphobia. The combination might be superior to behaviour therapy alone during the acute phase, but afterwards this trend may be reversed. We know little from these trials about their adverse effects.

Belief disconfirmation versus habituation approaches to situational exposure in panic disorder with agoraphobia: A pilot study

Exposure therapy and cognitive behaviour therapy (CBT) are both effective in the treatment of panic disorder with agoraphobia. Cognitive theories suggest that the way in which exposure to avoided situations is implemented in either treatment may be crucial. In particular, it is suggested that clinical improvement will be greatest if opportunities for disconfirmation of feared catastrophes are maximized. In a small pilot study, 16 patients with panic disorder and (moderate or severe) agoraphobia were randomly allocated to either habituation based exposure therapy (HBET) or exposure planned as a belief disconfirmation strategy and accompanied by dropping of safety-seeking behaviours. Both treatments were brief (total of 3.25 h of exposure) and were similar in terms of expectancy of change. Patients in the CBT condition showed significantly greater improvements in self-report measures of anxiety, panic and situational avoidance. They also completed significantly more steps in a standardized behavioural walk, during which they experienced significantly less anxiety. The controlled effect sizes for CBT were substantial (range 1.7-2.7), which suggests it may be a particularly efficient way of managing therapeutic exposure to feared situations in panic disorder with agoraphobia. Further research is needed to clarify the mechanism of change involved.

Panic and avoidance in panic disorder with agoraphobia: clinical relevance of change in different aspects of the disorder

Different aspects of change were examined in 62 patients who fulfilled the DSM-IV criteria for a primary diagnosis of panic disorder with agoraphobia of moderate to severe magnitude, and who were treated with 16 sessions of behavioral therapy. The treatment resulted in substantial effects on panic attacks and agoraphobic avoidance. Panic-free status only differentiated the patients regarding mood at pre- and post-treatment. Changes in panic and avoidance were related to each other, but change in avoidance was more related to change in negative affect. Change in quality of life (QOL) was also more associated with change in avoidance at post-treatment. At follow-up change in QOL was more related to change in panic than change in avoidance.

Management of panic disorder

Selective serotonin reuptake inhibitors are the first-line treatment for panic disorder. They are effective and well tolerated. Although tricyclic antidepressants are equally effective, they are less well tolerated than the selective serotonin reuptake inhibitors. Monoamine oxidase inhibitors can be efficacious but have a range of unwanted effects that preclude their use as first-line treatments. Benzodiazepines should be reserved for short-term use and for treatment-resistant patients who do not have a history of dependence and tolerance. Also, they can be combined with selective serotonin reuptake inhibitors in the first weeks of treatment to tide the patient over before the onset of the response. Cognitive behavioral therapy is the psychologic treatment of first choice. The methods of combining drug and nondrug treatments need careful and thorough exploration.

Cognitive behavioural therapy for depression, panic disorder and generalized anxiety disorder: a meta-regression of factors that may predict outcome

OBJECTIVE

To determine which factors impact on the efficacy of cognitive behavioural therapy (CBT) for depression and anxiety. Factors considered include those related to clinical practice: disorder, treatment type, duration and intensity of treatment, mode of therapy, type and training of therapist and severity of patients. Factors related to the conduct of the trial were also considered, including: year of study, country of study, type of control group, language, number of patients and percentage of dropouts from the trial.

METHOD

We used the technique of meta-analysis to determine an overall effect size (standardized mean difference calculated using Hedges' g) and meta-regression to determine the factors that impact on this effect size. We included randomized controlled trials with a wait list, pill placebo or attention/psychological placebo control group. Study participants had to be 18 years or older and all have diagnosed depression, panic disorder (with or without agoraphobia) or generalized anxiety disorder (GAD). Outcomes of interest included symptom, functioning and health-related quality of life measures, reported as continuous variables at post-treatment.

RESULTS

Cognitive behavioural therapy for depression, panic disorder and GAD had an effect size of 0.68 (95% CI=0.51-0.84, n=33 studies, 52 comparisons). The heterogeneity in the effect sizes was fully explained by treatment, duration of therapy, inclusion of severe patients in the trial, year of study, country of study, control group, language and number of dropouts from the control group. Disorder was not a significant predictor of the effect size.

CONCLUSIONS

Cognitive behavioural therapy is significantly less effective for severe patients and trials that compared CBT to a wait-list control group found significantly larger effect sizes than those comparing CBT to an attention placebo, but not to a pill placebo. Further research is needed to determine whether CBT is effective when provided by others than psychologists and whether it is effective for non-English-speaking patient groups.

Treatment of phobic postural vertigo

In balance clinic practice, phobic postural vertigo is a term used to define a population with dizziness and avoidance behavior often as a consequence of a vestibular disorder. It has been described as the most common form of dizziness in middle aged patients in dizziness units. Anxiety disorders are common among patients with vestibular disorders. Cognitive-behavioral therapy is an effective treatment for anxiety disorders, and vestibular rehabilitation exercises are effective for vestibular disorders. This study compared the effect of additional cognitive-behavioral therapy for a population with phobic postural vertigo with the effect of self-administered vestibular rehabilitation exercises. 39 patients were recruited from a population referred for otoneurological investigation. Treatment effects were evaluated with the Dizziness Handicap Inventory, Vertigo Symptom Scale, Vertigo Handicap Questionnaire, and Hospital Anxiety and Depression Scale. All patients had a self treatment intervention based on education about the condition and recommendation of self exposure by vestibular rehabilitation exercises. Every second patient included was offered additional cognitive behavioral therapy. Fifteen patients with self treatment and 16 patients with cognitive- behavioral treatment completed the study. There was significantly larger effect in the group who received cognitive behavioral therapy than in the self treatment group in Vertigo Handicap Questionnaire and the Hospital Anxiety and Depression scale and its subscales. Cognitive-behavioral therapy has an additional effect as treatment for a population with phobic postural vertigo. A multidisciplinary approach including medical treatment, cognitive-behavioral therapy and physiotherapy is suggested.

Event-list construction and treatment of exposure data in research on political violence

Event lists are commonly applied for measuring exposure to various kinds of potentially stressful and traumatizing life events. Before making general conclusions about the psychological effects of exposure to such events, problematic issues related to the use of event-list data need to be discussed and resolved. This article focuses on issues related to the construction and application of event lists for measuring exposure to political violence such as issues related to reliability, the applicability of the additive assumption, whether to weight event-list items, and the possible consequences of incomplete event lists. Alternative future approaches to these measurement issues are also discussed.

A meta-analysis of the efficacy of psycho- and pharmacotherapy in panic disorder with and without agoraphobia

The efficacy of (cognitive) behavioural ((C)BT) and pharmacological therapy was investigated using meta-analytic techniques. After a comprehensive review of the literature, the results of 124 studies were included. (C)BT was more effective than a no-treatment control and a placebo control. No difference of efficacy was found when using cognitive elements compared to not using them for anxiety; for associated depressive symptoms, additional cognitive elements seems superior. Pharmacotherapy was more effective than a placebo control; there was no superiority of any drug class. Sample size was related to effect size in pharmacotherapy and publication bias was found. (C)BT was at least as effective as pharmacotherapy and depending on type of analysis even significantly more effective. There were no significant differences between (C)BT alone and a combination approach but characteristics of studies have to be considered.

Social cognitive theory of posttraumatic recovery: the role of perceived self-efficacy

The present article integrates findings from diverse studies on the generalized role of perceived coping self-efficacy in recovery from different types of traumatic experiences. They include natural disasters, technological catastrophes, terrorist attacks, military combat, and sexual and criminal assaults. The various studies apply multiple controls for diverse sets of potential contributors to posttraumatic recovery. In these different multivariate analyses, perceived coping self-efficacy emerges as a focal mediator of posttraumatic recovery. Verification of its independent contribution to posttraumatic recovery across a wide range of traumas lends support to the centrality of the enabling and protective function of belief in one's capability to exercise some measure of control over traumatic adversity.

Can the Randomized Controlled Trial Literature Generalize to Nonrandomized Patients?

To determine the extent to which published randomized controlled trials (RCTs) of psychotherapy can be generalized to a sample of outpatients, the authors matched information obtained from charts of patients who had been screened out of RCTs to inclusion and exclusion criteria from published RCT studies. Most of the patients in the sample who had primary diagnoses represented in the RCT literature were judged eligible for at least 1 RCT. However, many patients in the sample with substance use disorders or social anxiety disorder were not eligible for at least 2 RCTs. Common reasons that patients did not match with at least 2 published RCTs for psychotherapy included (a) patients were in partial remission, (b) patients failed to meet minimum severity or duration criteria, (c) patients were being treated with antidepressant medication, and (d) the disorder being studied was not primary (mostly for social anxiety patients). The implications of these findings for future research and clinical practice are discussed.

Empirically Supported Psychotherapies: Comment on Westen, Novotny, and Thompson-Brenner (2004)

D. Westen, C. M. Novotny, and H. Thompson-Brenner (2004; see record 2004-15935-005) suggested that efforts to identify empirically supported treatments are misguided because they are based on assumptions that are not appropriate for some types of treatment and patients. The authors of this comment argue that Westen and colleagues are simply incorrect when they assert that empirically supported treatments require that psychopathology must be highly malleable, that treatments must be brief, or that the samples studied are unrepresentative of the kinds of patients typically encountered in clinical practice--comorbidity is common in many clinical trials. Randomized controlled trials remain the most powerful way to test notions of causal agency.

The role of catastrophic misinterpretation of bodily sensations and panic self-efficacy in predicting panic severity

This study investigated the role of both negative and positive cognitions in predicting panic severity in an international sample of patients diagnosed with panic disorder (with and without agoraphobia). One hundred and fifty-nine patients were administered the Brief Bodily Sensations Interpretation Questionnaire (BBSIQ), the Self-efficacy to Control Panic Attacks Questionnaire, and the Panic and Agoraphobia Scale (PAS) prior to receiving treatment. Regression analyses indicated that both catastrophic misinterpretation of bodily sensations and panic self-efficacy independently predicted panic severity. The influence of panic self-efficacy upon panic severity remained significant even after controlling for the presence or absence of agoraphobia. There was no evidence to suggest a moderating relationship between the two cognitive factors. Results are discussed in terms of the need to consider both negative and positive cognitions in cognitive accounts of panic disorder.

Cognitive behavior therapy vs exposure in vivo in the treatment of panic disorder with agrophobia

Seventy-three psychiatric outpatients with DSM-IV diagnosis of panic disorder with agoraphobia were assessed with a battery of independent assessor, self-observation, self-report and behavioral measures before and after therapy, and at a 1-yr follow-up. They were randomly assigned to Exposure in vivo (E; n = 25), Cognitive Behavior Therapy (CBT; n = 26), or a Wait-list control (WLC; n = 22) and received 12-16 individual therapy sessions, once weekly. The treatments yielded significant improvements, both on panic/agoraphobia measures and on measures of general anxiety, depression, social adjustment and quality of life, which were maintained at follow-up. However, there were no significant differences between E and CBT. The three criteria of clinically significant improvement were achieved by 67% of the E-patients and 79% of the CBT-patients at post-treatment, and 74% and 76%, respectively, at follow-up. The conclusion that can be drawn is that adding cognitive therapy to exposure did not yield significantly better results than for exposure alone.

Treatment-resistant panic disorder

A substantial number of patients with panic disorder and agoraphobia may remain symptomatic after standard treatment (including selective serotonin reuptake inhibitors, tricyclic antidepressants, benzodiazepines, or irreversible monamine oxidase inhibitors). In this review, recommendations for the treatment of patients with panic disorder and agoraphobia who do not respond to these drugs are provided. Nonresponse to drug treatment could be defined as a failure to achieve a 50% reduction on a standard rating scale after a minimum of 6 weeks of treatment in adequate dose. When initial treatments have failed, the medication should be changed to other standard treatments. In further attempts at treatment, drugs should be used that have shown promising results in preliminary studies, such as venlafaxine. Combination treatments may be used, such as the combination of an selective serotonin reuptake inhibitor and a benzodiazepine. Psychological treatments such as cognitive-behavioral therapy have to be considered in all patients, regardless whether they are nonresponders or not. According to existing studies, a combination of pharmacologic treatment with cognitive-behavioral therapy can be recommended.

An integrated cognitive model of panic disorder: The role of positive and negative cognitions

One reason for the neglect of the role of positive factors in cognitive-behavioural therapy (CBT) may relate to a failure to develop cognitive models that integrate positive and negative cognitions. Bandura [Psychol. Rev. 84 (1977) 191; Anxiety Res. 1 (1988) 77] proposed that self-efficacy beliefs mediate a range of emotional and behavioural outcomes. However, in panic disorder, cognitively based research to date has largely focused on catastrophic misinterpretation of bodily sensations. Although a number of studies support each of the predictions associated with the account of panic disorder that is based on the role of negative cognitions, a review of the literature indicated that a cognitively based explanation of the disorder may be considerably strengthened by inclusion of positive cognitions that emphasize control or coping. Evidence to support an Integrated Cognitive Model (ICM) of panic disorder was examined and the theoretical implications of this model were discussed in terms of both schema change and compensatory skills accounts of change processes in CBT.

Are samples in randomized controlled trials of psychotherapy representative of community outpatients? A new methodology and initial findings

To determine the extent to which published randomized controlled trials (RCTs) of psychotherapy can be generalized to a sample of community outpatients, the authors used a method of matching information obtained from outpatient charts to inclusion and exclusion criteria from published RCT studies. They found that 80% of the patients in their sample who had diagnoses represented in the RCT literature were judged eligible for at least 1 published RCT; however, 58% of the patients had primary diagnoses such as adjustment disorder or dysthymia, which were not represented in the existing psychotherapy outcome literature. The most common reasons that patients in their sample did not match with published RCTs for psychotherapy are listed, and the implications of these findings for research and practice are discussed.

Cognitive and behavioral treatments for anxiety disorders: A review of meta-analytic findings

Behavioral and cognitive psychotherapies are the most widely studied psychological interventions for anxiety disorders. In the present article, the results of ten years of meta-analytic studies on psychotherapies for the various anxiety disorders are reviewed and the relative effectiveness of cognitive and behavioral therapeutic methods is examined. Meta-analytic results support the effectiveness of combined cognitive and behavioral approaches for anxiety disorders. Pure behavioral therapies also are effective and appear to work as well as combined treatment for some disorders. Due to the small number of outcome studies involving pure cognitive treatments, reliable conclusions about the effectiveness of this approach cannot be offered. Additional theoretical and practical considerations are discussed.

Mediators of outcome of psychosocial treatments for cocaine dependence

This study examined endorsement of 12-step philosophy and engagement in recommended 12-step activities as a mediator of the outcomes of individual plus group counseling for cocaine dependence. Assessments of drug use outcomes and the mediator were made at baseline and monthly for 6 months. Engagement in recommended 12-step activities was found to be a partial statistical mediator of drug use outcomes of individual (plus group) drug counseling, but no evidence for change in the mediator preceding change in drug use was found. In addition, a measure of beliefs about addiction developed to test mediation of outcome of cognitive therapy was found to correlate moderately with drug use outcomes in both cognitive therapy and individual drug counseling.

World Federation of Societies of Biological Psychiatry (WFSBP) guidelines for the pharmacological treatment of anxiety, obsessive-compulsive and posttraumatic stress disorders

In this report, recommendations for the pharmacological treatment of anxiety and obsessive-compulsive disorders are presented, based on available randomized, placebo- or comparator-controlled clinical studies. Selective serotonin reuptake inhibitors (SSRIs) are the first-line treatment for panic disorder. Tri2-cyclic antidepressants (TCAs) are equally effective, but they are less well tolerated than the SSRIs. In treatment-resistant cases, benzodiazepines like alprazolam may be used when the patient does not have a history of dependency and tolerance. Due to possible serious side effects and interactions with other drugs and food components, the irreversible monamine oxidase inhibitor (MAOI) phenelzine should be used only when first-line drugs have failed. In generalised anxiety disorder, venlafaxine and SSRIs can be recommended, while buspirone and imipramine may be alternatives. For social phobia, SSRIs are recommended for the first line, and MAOIs, moclobemide and benzodiazepines as second line. Obsessive-compulsive disorder is best treated with SSRIs or clomipramine.