***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: BACKGROUND Effective internet-based programs for depression usually incorporate a component that provides telephone or email contact . Open access websites , without such contact , show high rates of attrition and poorer outcomes . The present study was design ed as an exploratory investigation of the parameters that influence the effectiveness and retention of users on open access websites . We investigated whether brief cognitive behaviour therapy ( CBT ) was as effective as an extended version , whether add-on components of behaviour therapy or stress management contributed to positive outcomes , and whether longer programs were associated with greater attrition . METHOD An online r and omized controlled trial ( RCT ) was conducted between 13 January 2005 and 26 May 2005 ( 19 weeks ) . A total of 2794 registrants ( 1846 women and 948 men ; median age category 35 - 44 years ) with elevated scores on the Goldberg Depression Scale of 5.96 ( S.D.=2.09 ) elected online to be r and omized to one of six versions of a CBT website . The versions were compiled consisting of various components of brief CBT , extended CBT , behaviour strategies , stress management and problem solving . RESULTS A total of 20.4 % of participants completed the assigned intervention . The interaction of measurement occasion and treatment version was significant [ F(13,131)=2.20 , p=0.01 ] . A single module of brief introductory CBT was not effective in reducing depression symptoms . However , extended CBT with or without the addition of behaviour strategies result ed in the reduction of depression . CONCLUSIONS Brief CBT-based interventions are not as effective as extended interventions . However , longer programs are associated with higher rates of dropout Current approaches to the treatment of panic disorder ( PD ) include a treatment package consisting of relaxation training ( RT ) , cognitive therapy ( CT ) , and exposure-based components . In an examination of the separate effects of RT and CT without formally taught exposure of any form , 64 PD patients were assigned r and omly to one of these treatment protocol s or to a minimal-contact control ( MCC ) condition . Both RT and CT were superior to the MCC condition on a variety of measures pertaining to panic , global psychological functioning , agoraphobic fear , and other associated fears . A significantly greater percentage of patients were classified as treatment responders ( based on a composite index ) after CT ( 82 % ) and RT ( 68 % ) , compared with the control group ( 36 % ) . On measures of agoraphobic fear , CT patients fared slightly better than RT patients . Some support was demonstrated for specific cognitive changes after CT , although treatment specificity was not strongly supported overall . These results are discussed in light of current theories of PD and the presumed importance of exposure in its treatment Mild depressive syndromes are highly prevalent among primary -care patients . Evidence -based treatment recommendations need to be derived directly from this diagnostically heterogeneous group . The primary aim was to assess the efficacy of sertraline and cognitive-behavioural group therapy for treatment of depressed primary -care patients , the secondary aim was to evaluate if receiving treatment according to free choice is associated with a better outcome than r and omization to a particular treatment . We conducted a r and omized , placebo-controlled , single-centre , 10-wk trial with five arms : sertraline ( flexible dosages up to 200 mg/d ) ( n = 83 ) ; placebo ( n = 83 ) ; manual-guided cognitive-behavioural group therapy ( one individual session and nine group sessions per 90 min ) ( n = 61 ) ; guided self-help group ( control condition , n = 59 ) ; and treatment with sertraline or cognitive-behavioural group therapy according to patients ' choice ( n = 82 ) . From 1099 consecutively screened adult patients , 368 formed the intent-to-treat population with milder forms of depression . Primary outcome was a global efficacy measure combining z-converted Hamilton Depression Rating Scale and clinician-rated Inventory for Depressive Symptomatology scores .  Sertraline was superior to  placebo  ( p = 0.03 ) . Outcome for guided self-help groups was worse compared to cognitive-behavioural group therapy ( p = 0.002 ) and compared to all other treatment arms including pill placebo ( secondary analyses ) . Outcome in the patients ' choice arm was similar to that in the sertraline and cognitive-behavioural group therapy . Overall , sertraline is efficacious in primary -care patients with milder forms of depression . The superiority of cognitive-behavioural group therapy over guided self-help groups might partly be explained by ' nocebo ' effects of the latter BACKGROUND Although effective therapies for social phobia exist , many individuals refrain from seeking treatment owing to the embarrassment associated with help-seeking . Internet-based cognitive-behavioural self-help can be an alternative , but adherence is a problem . AIMS To evaluate a 9-week programme of internet-based therapy design ed to increase treatment adherence by the addition of short weekly telephone calls , nine in all , with a total duration of 95 min . METHOD In a r and omised controlled trial the effects of internet-based cognitive-behavioural therapy in the treatment group ( n=29 ) were compared with a waiting-list control group ( n=28 ) . RESULTS Compared with the control group the treated participants experienced greater reductions on measures of general and social anxiety , avoidance and depression . Adherence to treatment was high , with 93 % finishing the complete treatment package . One year later all improvements were maintained . CONCLUSIONS This study provides evidence to support the use of internet-based treatment supplemented by short , weekly telephone calls BACKGROUND Major depression can be treated by means of cognitive-behavioural therapy , but as skilled therapists are in short supply there is a need for self-help approaches . Many individuals with depression use the internet for discussion of symptoms and to share their experience . AIMS To investigate the effects of an internet-administered self-help programme including participation in a monitored , web-based discussion group , compared with participation in web-based discussion group only . METHOD A r and omised controlled trial was conducted to compare the effects of internet-based cognitive-behavioural therapy with minimal therapist contact ( plus participation in a discussion group ) with the effects of participation in a discussion group only . RESULTS Internet-based therapy with minimal therapist contact , combined with activity in a discussion group , result ed in greater reductions of depressive symptoms compared with activity in a discussion group only ( waiting-list control group ) . At 6 months ' follow-up , improvement was maintained to a large extent . CONCLUSIONS Internet-delivered cognitive cognitive-behavioural therapy should be pursued further as a complement or treatment alternative for mild-to-moderate depression Background Guided self-help programs for depression ( with associated therapist contact ) have been successfully delivered over the Internet . However , previous trials of pure self-help Internet programs for depression ( without therapist contact ) , including an earlier trial conducted by us , have failed to yield positive results . We hypothesized that methods to increase participant usage of the intervention , such as postcard or telephone reminders , might result in significant effects on depression . Objectives This paper presents a second r and omized trial of a pure self-help Internet site , ODIN ( Overcoming Depression on the InterNet ) , for adults with self-reported depression . We hypothesized that frequently reminded participants receiving the Internet program would report greater reduction in depression symptoms and greater improvements in mental and physical health functioning than a comparison group with usual treatment and no access to ODIN . Methods This was a three-arm r and omized control trial with a usual treatment control group and two ODIN intervention groups receiving reminders through postcards or brief telephone calls . The setting was a nonprofit health maintenance organization ( HMO ) . We mailed recruitment brochures by US post to two groups : adults ( n = 6030 ) who received depression medication or psychotherapy in the previous 30 days , and an age- and gender-matched group of adults ( n = 6021 ) who did not receive such services . At enrollment and at 5- , 10- and 16-weeks follow-up , participants were reminded by email ( and telephone , if nonresponsive ) to complete online versions of the Center for Epidemiological Studies Depression Scale ( CES-D ) and the Short Form 12 ( SF-12 ) . We also recorded participant HMO health care services utilization in the 12 months following study enrollment . Results Out of a recruitment pool of 12051 approached subjects , 255 persons accessed the Internet enrollment site , completed the online consent form , and were r and omized to one of the three groups : ( 1 ) treatment as usual control group without access to the ODIN website ( n = 100 ) , ( 2 ) ODIN program group with postcard reminders ( n = 75 ) , and ( 3 ) ODIN program group with telephone reminders ( n = 80 ) . Across all groups , follow-up completion rates were 64 % ( n = 164 ) at 5 weeks , 68 % ( n = 173 ) at 10 weeks , and 66 % ( n = 169 ) at 16 weeks . In an intention-to-treat analysis , intervention participants reported greater reductions in depression compared to the control group ( P = .03 ; effect size = 0.277 st and ard deviation units ) . A more pronounced effect was detected among participants who were more severely depressed at baseline ( P = .02 ; effect size = 0.537 st and ard deviation units ) . By the end of the study , 20 % more intervention participants moved from the disordered to normal range on the CES-D. We found no difference between the two intervention groups with different reminders in outcomes measures or in frequency of log-ons . We also found no significant intervention effects on the SF-12 or health care services . Conclusions In contrast to our earlier trial , in which participants were not reminded to use ODIN , in this trial we found a positive effect of the ODIN intervention compared to the control group . Future studies should address limitations of this trial , including relatively low enrollment and follow-up completion rates , and a restricted number of outcome measures . However , the low incremental costs of delivering this Internet program makes it feasible to offer this type of program to large population s with widespread Internet access Background Self-help therapies are often effective in reducing  mental health problems .  We developed a new Web-based self-help intervention based on problem-solving therapy , which may be used for people with different types of comorbid problems : depression , anxiety , and work-related stress . Objective The aim was to study whether a Web-based self-help intervention is effective in reducing depression , anxiety , and work-related stress ( burnout ) . Methods A total of 213 participants were recruited through mass media and r and omized to the intervention ( n = 107 ) or a waiting list control group ( n = 106 ) . The Web-based course took 4 weeks . Every week an automated email was sent to the participants to explain the contents and exercises for the coming week . In addition , participants were supported by trained psychology students who offered feedback by email on the completed exercises . The core element of the intervention is a procedure in which the participants learn to approach solvable problems in a structured way . At pre-test and post-test , we measured the following primary outcomes : depression ( CES-D and MDI ) , anxiety ( SCL-A and HADS ) , and work-related stress ( MBI ) . Quality of life ( EQ-5D ) was measured as a secondary outcome . Intention-to-treat analyses were performed . Results Of the 213 participants , 177 ( 83.1 % ) completed the baseline and follow-up question naires ; missing data were statistically imputed . Of all 107 participants in the intervention group , 9 % ( n = 10 ) dropped out before the course started and 55 % ( n = 59 ) completed the whole course . Among all participants , the intervention was effective in reducing symptoms of depression ( CES-D : Cohen ’s d = 0.50 , 95 % confidence interval ( CI ) 0.22 - 0.79 ; MDI : d = 0.33 , 95 % CI 0.03 - 0.63 ) and anxiety ( SCL-A : d = 0.42 , 95 % CI 0.14 - 0.70 ; HADS : d = 0.33 , 95 % CI 0.04 - 0.61 ) as well as in enhancing quality of life ( d = 0.31 , 95 % CI 0.03 - 0.60 ) . Moreover , a higher percentage of patients in the intervention group experienced a significant improvement in symptoms ( CES-D : odds ratio [ OR ] = 3.5 , 95 % CI 1.9 - 6.7 ; MDI : OR = 3.7 , 95 % CI 1.4 - 10.0 ; SCL-A : OR = 2.1 , 95 % CI 1.0 - 4.6 ; HADS : OR = 3.1 , 95 % CI 1.6 - 6.0 ) . Patients in the intervention group also recovered more often ( MDI : OR = 2.2 ; SCL-A : OR = 2.0 ; HADS < 8) , although these results were not statistically significant . The course was less effective for work-related stress , but participants in the intervention group recovered more often from burnout than those in the control group ( OR = 4.0 , 95 % CI 1.2 - 13.5 ) . Conclusions We demonstrated statistically and clinical ly significant effects on symptoms of depression and anxiety . These effects were even more pronounced among participants with more severe baseline problems and for participants who fully completed the course . The effects on work-related stress and quality of life were less clear . To our knowledge , this is the first trial of a Web-based , problem-solving intervention 
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BACKGROUND Cognitive-behavioural therapy (CBT)-based guided self-help ( GSH ) has been suggested to be an effective intervention for mild to moderate anxiety and depression , yet the evidence seems inconclusive , with some studies reporting that GSH is effective and others finding that GSH is ineffective .
Meta- analysis indicated the effectiveness of GSH at post-treatment , although GSH was found to have limited effectiveness at follow-up or among more clinical ly representative sample s. Studies that reported greater effectiveness of GSH tended to be of lower method ological quality and generally involved participants who were self-selected rather than recruited through clinical referrals .
Further rigorous evidence based on clinical population s that examines longer-term outcomes is required before CBT-based GSH interventions can be deemed effective for adults accessing primary care services for treatment of anxiety and depression