Computer-aided self-exposure therapy for phobia/panic disorder: a pilot economic evaluation.

Phobia/panic disorder is common. It improves with exposure therapy, even when guided mainly by a computer self-help system such as FearFighter (FF), but such therapy must also demonstrate cost-effectiveness. This study compares the cost-effectiveness of FF with computed-aided relaxation and clinician-led exposure. Data were obtained on patients from a randomised controlled trial of FF. Economic analyses used pretreatment and 1-month follow-up self-ratings of the main problem and global phobia. Clinician costs were calculated using the number of therapist hours and the cost of FF. Incremental cost-effectiveness ratios were calculated and cost-effectiveness acceptability curves were produced. Data were available on 62 patients with main problem ratings and 60 with global phobia ratings. FF and clinician-led exposure were more effective than relaxation but more expensive. Compared with relaxation, producing an extra unit of improvement on the main problem scale cost 64 UK pounds with FF and 100 UK pounds with clinician-led exposure. FF appeared to be more cost-effective using the global phobia rating (112 UK pounds per extra unit of improvement vs. 128 UK pounds for clinician-led exposure). The cost-effectiveness of FF could be enhanced if users had less highly trained supporters. FF would be less cost-effective if face-to-face therapy was delivered by less qualified professionals. Caution is urged regarding these indicative findings given that these were secondary analyses.

Computer-aided psychotherapy for anxiety disorders: a meta-analytic review.

Computer-aided psychotherapy (CP) is said to (1) be as effective as face-to-face psychotherapy, while requiring less therapist time, for anxiety disorder sufferers, (2) speed access to care, and (3) save traveling time. CP may be delivered on stand-alone or Internet-linked computers, palmtop computers, phone-interactive voice response, DVDs, and cell phones. The authors performed a meta-analysis of 23 randomised controlled studies (RCTs) that compared CP with non-CP in anxiety disorders: phobias, n = 10; panic disorder/agoraphobia, n = 9; PTSD, n = 3; obsessive-compulsive disorder, n = 1. Overall mean effect size of CP compared with non-CP was 1.08 (95% confidence interval: 0.84-1.32). CP and face-to-face psychotherapy did not differ significantly from each other (13 comparisons, d = -0.06). Much caution is needed when interpreting the findings indicating that outcome was unrelated to type of disorder, type of comparison group, mode of CP delivery (Internet, stand-alone PC, palmtop), and recency of the CP system and that effect size decreased when more therapist time was replaced by the computer. Because CP as a whole was as effective as face-to-face psychotherapy, certain forms of CP deserve to be integrated into routine practice.

Meta-analysis of computer-aided psychotherapy: problems and partial solutions.

Meta-analysis can be valuable if it heeds its originators' caution that intimate communing with the data is essential. A critique of the authors' own meta-analysis shows that the danger of overly broad conclusions could be reduced by attention to specificities and awareness of potentially hidden sources of variance. Conclusions from even good meta-analyses are best placed in perspective, along with naturalistic reviews, open studies, and even anecdotes to yield a fair picture of what computer-aided psychotherapy or any other treatment can achieve under varying conditions. The most realistic picture comes from zooming in and out and melding meta-analyses with further types of evidence.

Effect of referral source on outcome with cognitive-behavior therapy self-help.

Little is known about how psychiatric patients' source of referral relates to treatment outcome. This study examines the effect of referral source on clinical outcome with computer-aided cognitive-behavior therapy (CCBT) for anxiety and depressive disorders. Three hundred fifty-five referrals to a clinic that offered CCBT with brief backup from a clinician were classified into general practitioner (GP) referrals (34%), mental health (MH) professional referrals (42%), and self-referrals (SR, 24%), and compared on sociodemographic and clinical features and treatment outcome. At intake, referrals from all 3 sources had similar sociodemographic features and problem duration, but GP referrals had less comorbidity, whereas MH professional referrals were being treated for their problem more often and were less motivated to change than were SR. Among treatment completers, SRs had the least and MH professional referrals had the most impaired work/social adjustment. Each referral group improved on generic and syndrome-specific measures; however, GP referrals improved the most and MH professional referrals the least. The 3 groups received similar therapist support and were equally satisfied after treatment. We conclude that GP referrals had the best outcome with CCBT for anxiety/depressive disorders. Referral source can be important in psychotherapy research because it may affect the type of patient seen and may predict treatment outcome.

Self-help with minimal therapist contact for obsessive-compulsive disorder: a review.

Though there are effective psychological and drug treatments for obsessive-compulsive disorder (OCD), many patients remain inadequately treated or untreated. Making effective self-treatment guidance available may increase the number of patients being helped. In this review, database and manual literature searches were performed of case studies, open and randomised controlled trials (RCTs) of bibliotherapy, self-help groups, telecare and computer-aided self-help for OCD. We found no RCTs of bibliotherapy or self-help groups for OCD. Three open studies showed the efficacy of brief exposure and ritual prevention (ERP) instructions delivered by a live therapist by phone. A vicarious ERP computer program was effective in a small open study. Fully interactive computer-aided self-help by ERP for OCD was efficacious in two open studies and a large multicentre RCT, and in a small RCT compliance and outcome with that program was enhanced by brief scheduled support from a clinician. Although more research is needed, self-help approaches have the potential to help many more patients who would otherwise remain inadequately treated or untreated. Their dissemination could save resources used by health care providers. We propose a stepped care model for the treatment of OCD.

Reliability and validity of the work and social adjustment scale in phobic disorders.

The Work and Social Adjustment Scale (WSAS) is a simple widely used 5-item measure of disability whose psychometric properties need more analysis in phobic disorders. The reliability, factor structure, validity, and sensitivity to change of the WSAS were studied in 205 phobic patients (73 agoraphobia, 62 social phobia, and 70 specific phobia) who participated in various open and randomized trials of self-exposure therapy. Internal consistency of the WSAS was excellent in all phobics pooled and in agoraphobics and social phobics separately. Principal components analysis extracted a single general factor of disability. Specific phobics gave less consistent ratings across WSAS items, suggesting that some items were less relevant to their problem. Internal consistency was marginally higher for self-ratings than clinician ratings of the WSAS. Self-ratings and clinician ratings correlated highly though patients tended to rate themselves as more disabled than clinicians did. WSAS total scores reflected differences in phobic severity and improvement with treatment. The WSAS is a valid, reliable, and change-sensitive measure of work/social and other adjustment in phobic disorders, especially in agoraphobia and social phobia.

Alternatives to debriefing and modifications to cognitive behavior therapy for posttraumatic stress disorder.

BACKGROUND: Psychological debriefing uses brief unsystematic exposure, and is ineffective for posttraumatic stress symptoms and disorder. Systematic exposure alone and cognitive restructuring alone are each effective. Other approaches too may be useful. METHODS: The treatment of 3 posttraumatic stress disorder (PTSD) patients is detailed in which there was no exposure to the main traumatic event. There was exposure to related cues in case 1, exposure to related and other cues followed by well-being therapy (WBT) in case 2 and WBT in case 3. RESULTS: The 3 patients improved enduringly, confirming earlier findings that exposure to the main trauma is not essential for PTSD to improve. CONCLUSIONS: A study is needed of therapeutic mechanisms in PTSD and of the value of WBT in a randomized controlled trial.

Internet-guided self-help with or without exposure therapy for phobic and panic disorders.

BACKGROUND: As many sufferers from phobic and panic (phobia/panic) disorders cannot get to suitable therapists, routine aspects of therapy were delegated to internet-accessed computer-aided self-help with or without exposure instructions. METHODS: Phobia/panic referrals were randomised to computer-aided self-help via the internet at home in a 2:1 ratio either by self-exposure cognitive behaviour therapy (CBT) [FearFighter (FF), n = 45] or by minimal CBT without exposure [Managing Anxiety (MA), n = 23]. All had brief backup phone advice from a clinician concerning their computer guidance. RESULTS: On self-ratings and blinded assessor ratings, patients improved equally with each form of self-help over 10 treatment weeks but significantly more on 5 out of 10 measures by week 14 (1-month follow-up) when the self-help included self-exposure instructions than when it did not. In accord with this, standardised effect sizes (Cohen's d) indicated superiority of FF over MA on 5 measures by week 14. Satisfaction with treatment in all patients pooled correlated positively with improvement after treatment and at 1-month follow-up. CONCLUSIONS: At the end of treatment, computer-aided CBT self-help at home via the internet plus brief live helpline support was effective with or without exposure instructions, and at 1-month follow-up it was more effective on some measures if exposure instructions had been included. Analysis is needed of how non-exposure CBT produced its shorter-term effect.

Screening people with anxiety/depression for suitability for guided self-help.

The aim of this study was to test a questionnaire for screening people with anxiety/ depression for their suitability for certain forms of computer-guided self-help. A total of 196 referrals completed the screening questionnaire. Three clinicians each independently judged the referrals' broad problem type and suitability. Referrals were randomized to 1 of 3 clinicians for a screening interview. The results show that inter-clinician agreement was good for questionnaire-based problem type and suitability, and excellent for screening interview-based problem type and suitability. Agreement between the questionnaire and interview was good on problem type but poor on suitability. Compared with the screening interview, the questionnaire detected suitable patients well but unsuitable patients less well. In conclusion, by quickly scanning the completed questionnaire, clinicians were able sensitively to detect patients' problem types that were suitable for certain forms of self-help. Some unsuitability items need refining.

Computer-aided self-help for phobia/panic via internet at home: a pilot study.

In an open study, ten people with phobia or panic disorder who could not travel repeatedly to a therapist accessed a computer-aided exposure self-help system (FearFighter) at home on the internet with brief therapist support by telephone. They improved significantly, and their outcome and satisfaction resembled those in patients with similar disorders who used FearFighter in clinics with brief face-to-face therapist support.

Pragmatic evaluation of computer-aided self-help for anxiety and depression.

BACKGROUND: Most anxiety/depression is not effectively treated. Aims Open evaluation of a free clinic giving immediate computer-aided cognitive-behavioural therapy (CBT) self-help plus brief advice from a therapist. METHOD: Test of outcome of self-referrals who used one of four computer-aided CBT systems for depression, phobia/panic, general anxiety or obsessive-compulsive disorder. RESULTS: The equivalent of one full-time clinician managed 355 referrals over a year. Of the 266 who had a screening interview 79% were suitable. Completers and non-completers of computer-aided CBT had similar pre-treatment features, with very chronic, moderately severe problems. Completers of the computer-aided self-help had a mean total of an hour's live therapist support over 12 weeks. They improved significantly and clinically meaningfully with three of the four systems and felt 'fairly satisfied'. Improvement resembled that in controlled and other trials of computer-aided CBT. CONCLUSIONS: Computer-aided self-help is a 'clinician extender'that greatly cuts per-patient therapist time without impairing improvement. It could reduce the per-patient cost of CBT.

Obsessive-compulsive symptom dimensions as predictors of compliance with and response to behaviour therapy: results from a controlled trial.

BACKGROUND: Recent factor-analytic studies in obsessive-compulsive disorder (OCD) identified consistent symptom dimensions. Support for the validity of these dimensions comes from studies of psychiatric comorbidity, functional brain imaging, genetic transmission, and treatment response to medications. This study examined whether previously identified OCD symptom dimensions are associated with treatment compliance and response to behaviour therapy (BT) for OCD. METHODS: One hundred and fifty-three OCD outpatients who participated in a multi-centre randomised controlled trial of computer- versus clinician-guided BT for OCD were included in the study. Logistic and multiple regression models tested for significant predictors of compliance with and response to BT and relaxation. RESULTS: The patients studied were phenomenologically comparable (including the presence of 'pure' obsessions and mental rituals) to those in previous serotonin reuptake inhibitor (SRI) trials and those in clinical epidemiology studies. High scorers on the 'hoarding' dimension were more likely to drop out prematurely from the study and tended to improve less. For those completing treatment, the strongest predictor of outcome was pre-treatment severity. Initial depression scores were unrelated to outcome. After controlling for symptom severity, higher scores on the 'sexual/religious obsessions' factor predicted poorer outcome with BT, especially when computer-guided. CONCLUSIONS: BT is especially indicated for OCD patients with aggressive/checking, contamination/cleaning and symmetry/ordering symptoms. Previous accounts of unsuccessful BT in patients with hoarding symptoms may be due in part to their propensity to drop out earlier from treatment. Patients with sexual/religious obsessions, but not those with mental rituals, might respond less well to traditional BT techniques. Existing treatments need to be refined and/or new treatments developed to improve these patients' adherence and response to treatment.

The Work and Social Adjustment Scale: a simple measure of impairment in functioning.

BACKGROUND: Patients' perspectives concerning impaired functioning provide important information. AIMS; To evaluate the reliability and validity of the Work and Social Adjustment Scale (WSAS). METHOD: Data from two studies were analysed. Reliability analyses included internal scale consistency, test-retest and parallel forms. Convergent and criterion validities were examined with respect to disorder severity. RESULTS: Cronbach's alpha measure of internal scale consistency ranged from 0.70 to 0.94. Test-retest correlation was 0.73. Interactive voice response administrations of the WSAS gave correlations of 0.81 and 0.86 with clinician interviews. Correlations of WSAS with severity of depression and obsessive-compulsive disorder symptoms were 0.76 and 0.61, respectively. The scores were sensitive to patient differences in disorder severity and treatment-related change. CONCLUSIONS: The WSAS is a simple, reliable and valid measure of impaired functioning. It is a sensitive and useful outcome measure offering the potential for readily interpretable comparisons across studies and disorders.

Teaching medical students exposure therapy for phobia/panic - randomized, controlled comparison of face-to-face tutorial in small groups vs. solo computer instruction.

OBJECTIVE: To compare the teaching value of one session of computer-guided solo instruction in exposure therapy for phobias with that of one face-to-face small-group tutorial. DESIGN: Non-blind, randomized, controlled study. SETTING: King's College Hospital Medical School, London. PARTICIPANTS: Thirty-seven third-year medical students and 11 behaviour therapists. MAIN OUTCOME MEASURES: Seventy-five true/false multiple choice questions relating to (b) below answered at pre- and post-teaching by students and just once by behaviour therapists to obtain 'expert' scores; pre- and post-teaching ratings of interest in behaviour therapy and post-teaching ratings of educational and enjoyment value. EDUCATIONAL INTERVENTIONS: (a) All students had a 20-minute group lecture on basic concepts and historical aspects just before randomization to: (b) 90 min of either solo computer or group face-to-face tutorial teaching. Computer instruction used a short version of 'FearFighter'- a self-help computer system for people suffering from phobias. RESULTS: Solo computer instruction taught exposure therapy principles effectively but improved multiple choice question scores marginally less than did small-group tutorial teaching. Tutorial teaching required 5 times more teacher time but led to knowledge scores that did not differ significantly from those of behaviour therapists. Students clearly rated face-to-face small-group tutorial teaching as more enjoyable. CONCLUSION: The knowledge gain from a solo computer session resembled that from a small-group face-to-face tutorial, and required far less teacher time, but was less enjoyable. Enjoyment might rise if the computer session was group-oriented and aimed at students rather than patients. In general computer teaching might be best used to complement rather than replace conventional teaching.

The maturing of therapy. Some brief psychotherapies help anxiety/depressive disorders but mechanisms of action are unclear.

BACKGROUND: Psychiatric therapy needs assessment regarding its maturation as a therapeutic science. AIMS: Judgement of whether such a science is emerging. METHOD: Four criteria are used: efficacy; identification of responsible treatment components; knowledge of their mechanisms of action; and elucidation of why they act only in some sufferers. RESULTS: Brief behavioural, interpersonal, cognitive, problem-solving and other psychotherapies have a mature ability to improve anxiety and depressive disorders reliably and enduringly, often only with instruction from a manual or a computer. Therapy's cost-effectiveness and acceptability deserve more attention. We know little about which treatment components produce improvement, how they do so and why they do not help all sufferers. CONCLUSIONS: Therapy is coming of age regarding efficacy for anxiety and depression, but is only a toddler regarding the scientific principles to explain its effects.

Behavior therapy for obsessive-compulsive disorder guided by a computer or by a clinician compared with relaxation as a control.

BACKGROUND: The demand for effective behavior therapy for obsessive-compulsive disorder (OCD) by exposure and ritual prevention exceeds its supply by trained therapists. A computer-guided behavior therapy self-help system (BT STEPS) was created that patients access by telephone from home via interactive voice response technology. This study compared the value of computer-guided behavior therapy value with that of clinician-guided behavior therapy and systematic relaxation as a control treatment. METHOD: After screening by a clinician, 218 patients with DSM-IV OCD at 8 North American sites were randomly assigned to 10 weeks of behavior therapy treatment guided by (1) a computer accessed by telephone and a user workbook (N = 74) or (2) a behavior therapist (N = 69) or (3) systematic relaxation guided by an audiotape and manual (N = 75). RESULTS: By week 10, in an intent-to-treat analysis, mean change in score on the Yale-Brown Obsessive Compulsive Scale was significantly greater in clinician-guided behavior therapy (8.0) than in computer-guided (5.6), and changes in scores with both clinician-guided and computer-guided behavior therapy were significantly greater than with relaxation (1.7), which was ineffective. Similarly, the percentage of responders on the Clinical Global Impressions scale was significantly (p < .05) greater with clinician-guided (60%) than computer-guided behavior therapy (38%), and both were significantly greater than with relaxation (14%). Clinician-guided was superior to computer-guided behavior therapy overall, but not when patients completed at least 1 self-exposure session (N = 36 [65%]). At endpoint, patients were more satisfied with either behavior therapy group than with relaxation. Patients assigned to computer-guided behavior therapy improved more the longer they spent telephoning the computer (mostly outside usual office hours) and doing self-exposure. They improved slightly further by week 26 follow-up, unlike the other 2 groups. CONCLUSION: For OCD, computer-guided behavior therapy was effective, although clinician-guided behavior therapy was even more effective. Systematic relaxation was ineffective. Computer-guided behavior therapy can be a helpful first step in treating patients with OCD when clinician-guided behavior therapy is unavailable.