Reminiscence therapy exhibits alleviation of anxiety and improvement of life quality in postoperative gastric cancer patients: A randomized, controlled study.

ABSTRACT: Although reminiscence therapy alleviates mental illness and improves quality of life in neurocognitive disorders patients, little study reports its clinical application in cancer patients. Thus, this study aimed to explore the effect of reminiscence therapy on anxiety, depression, quality of life, and survival profile in postoperative gastric cancer patients.One hundred sixty surgical gastric cancer patients were enrolled in this randomized, controlled study, then randomly assigned to Reminiscence therapy group (N = 80) and Control group (N = 80) as 1:1 ratio. The evaluation was carried at baseline (M0), month 3 (M3), month 6 (M6), month 9 (M9), and month 12 (M12) after intervention by Hospital Anxiety and Depression Scale and European Organization for Research and Treatment of Cancer quality of life Questionnaire-Core 30 (QLQ-C30). Furthermore, disease-free survival and overall survival were analyzed using follow-up data.Reminiscence therapy decreased HADS for anxiety score at M6, M9, and M12, decreased anxiety rate at M9 and M12 compared to control care; while it did not affect HADS for depression score or depression rate at any time-point. Also, reminiscence therapy raised QLQ-C30 global health status score at M12, reduced QLQ-C30 symptoms score at M6, while did not affect QLQ-C30 function score at any time-point compared to control care. Reminiscence therapy did not affect disease-free survival and overall survival, either. Further subgroup analyses (divided by age and gender) observed that the effect of reminiscence therapy seemed more obvious in patients with age ≤60 years and male patients.Reminiscence therapy exhibits alleviation of anxiety and improvement of quality of life in postoperative gastric cancer patients.

A systematic review of adherence to group interventions in psychosis: do people attend?

BACKGROUND: Evidence supports the use of group therapy for symptom reduction and improving functioning in people with psychosis. However, research guidelines highlight the importance of establishing the feasibility of interventions. Adherence is an important indicator of feasibility and an essential step in supporting the development of the evidence base for group interventions. This review aims to estimate adherence, and possible barriers and facilitators, to psychotherapeutic groups in people with psychosis. METHODS: Embase, Ovid MEDLINE and PsycINFO databases were searched for cross-referencing terms related to group therapy and psychosis. Studies were assessed against inclusion criteria and methodological quality was evaluated. Data wasextracted from each paper including the average session attendance, demographic, clinical, study and therapy-related characteristics and the impact of these on adherence levels evaluated. RESULTS: Fifty-nine original research papers were included, reporting on 52 independent studies which consisted of 66 therapy groups comprised of 2109 participants. Average adherence was 76.4% (s.d. = 17.4). Adherence was improved by receiving incentives and was higher in participants of older age. Study sample size was inversely associated with adherence levels. Study quality was variable with approximately 61.5% found to be at risk of bias. The results support the feasibility of group therapy and suggest that adherence in people with psychosis is not dissimilar to those for people experiencing common mental health difficulties. These findings, alongside efficacy evidence, support the use of group interventions in people with psychosis but also highlight the need for further high-quality research on the efficacy for these approaches.

Motivational Interviewing Adapted to Group Setting for the Treatment of Relapse in the Behavioral Therapy of Obesity. A Clinical Audit.

Motivational interviewing (MI) is devised to change unhealthy behaviors by increasing motivation. We adapted MI to a group format for the treatment of relapse during the behavioral treatment of obesity and performed a clinical audit to evaluate its effectiveness in stopping weight regain. The program was structured in seven weekly sessions, plus a 6-month follow-up. Patients (n = 86) completed a questionnaire on motivation to change in both healthy diet and physical activity, and a self-reported measurement of calorie intake and physical activity at baseline, at program end and at 6-month follow-up. The attendance to the program was high, with only 13 patients (15%) not completing the program and 24% not attending the 6-month follow-up. By the end of follow up, the prevalence of patients in either precontemplation or contemplation was reduced from over 60% at enrollment to approximately 20%, whereas the sum of patients in action or maintenance stages was increased from 9.5% in healthy diet and 14% in physical activity to 39.7% and 41.3%, respectively. These changes translated into significant behavioral changes (mean calorie intake, -13%; total physical activity, +125%; sedentary time, -8%) and finally into reduced body weight ( -3%). We conclude that MI programs adapted for groups may be used to stop relapse in individuals following a behavioral intervention for obesity.

Attrition and attendance in group therapy for university students: An examination of predictors across time.

OBJECTIVES: There exists a dearth of research focused explicitly on predictors of attrition, particularly in the area of group therapy, where both attrition and attendance becomes of primary concern. The present study examined both pretreatment and treatment-specific variables in the prospective prediction of attendance and attrition in group therapy. METHOD: Fifty-two participants were randomized to one of two 12-week group treatments. Participants completed baseline interviews and questionnaires, as well as weekly assessments of treatment-specific factors. RESULTS: No pretreatment factors predicted attendance or drop out, although men attended a larger amount of sessions and were less likely to drop out. Cross-lagged panel analyses supported bidirectional, causal relationships both treatment-specific predictors (therapeutic alliance and number of therapeutic techniques) and attendance. CONCLUSIONS: Successful retention in group therapy may be less predictable from pretreatment factors and instead lie in increasing alliance and fostering the practice of therapeutic strategies.

Lived experiences of psychiatric patients with mood disorders who attended group therapy facilitated by professional psychiatric nurses.

BACKGROUND: According to the World Health Organization (WHO), up to 25% of people worldwide will develop mental health disorders during their lifetime. Patients admitted to acute inpatient units for mood disorders experience emotional distress. Group therapy has the potential to foster the therapeutic change through specific therapeutic mechanisms. Psychiatric nurses working in inpatient units are in a unique position to offer group therapy. OBJECTIVES: Explore and describe stabilised acute psychiatric patients with mood disorders' lived experiences of group therapy facilitated by psychiatric nurses. Make specific recommendations for psychiatric nurses to facilitate constructive group therapy for stabilised acute psychiatric patients with mood disorders in an inpatient unit. METHOD: A qualitative, exploratory, descriptive and contextual design was used in the study. A purposive sample of all patients with mood disorders older than 18 years admitted to inpatient units who participated in group therapy was made. Data were collected through conducting phenomenological interviews, observation and field notes. Interviews focussed on the following open question: 'How did you experience group therapy facilitated by the psychiatric nurses?' An independent coder analysed the data by using thematic coding. Measures to ensure trustworthiness were applied. The following four ethical principles were adhered to: autonomy, non-maleficence, beneficence and justice. RESULTS: Three themes emerged from this study. Theme 1 entailed the psychological experiences of patients attending group therapy. Theme 2 highlighted the interpersonal experiences of patients. Theme 3 evolved around patients' experiences outside group therapy. Patients initially experienced attending group therapy as anxiety provoking. However, negative psychological experiences soon transformed into positive psychological experiences. CONCLUSION: The findings of this study were used to make specific recommendations to facilitate constructive group therapy for patients with mood disorders.

No additional long-term effect of group vs individual family intervention in the treatment of childhood obesity-A randomised trial.

AIM: Long-term evaluations of childhood obesity treatments are needed. We examined changes in weight and cardiometabolic risk 1 year after children completed individual family or group-based weight management interventions. METHODS: In 2009-2010, 6- to 12-year-old children with overweight or obesity from Finnmark and Troms (Norway) were recruited after media coverage and randomised to 24 months of individual family (n = 49) or group intervention (n = 48). Individual family intervention included counselling by a paediatric hospital team and a public health nurse in the local community. Group intervention included meetings with other families and a multidisciplinary hospital team, weekly physical activity sessions and a family camp. The primary outcome body mass index (BMI) and cardiometabolic risk factors were analysed 12 months after intervention. RESULTS: From baseline to 36 months, children's BMI increased 3.0 kg/m2 in individual family and 2.1 kg/m2 in group intervention (between-group -0.9kg/m2 , P = 0.096). Data were available from 62 children (64%). Between-group differences in C peptide (P = 0.01) were detected in favour of group intervention. Pooled data from both treatment groups showed continued decrease in BMI standard deviation score (P < 0.001). CONCLUSION: No between-group difference in BMI was observed 12 months after intervention. Both groups combined showed sustained decrease in BMI standard deviation score.

A Meta-Analysis of Program Characteristics for Youth with Disruptive Behavior Problems: The Moderating Role of Program Format and Youth Gender.

There is high variability in efficacy for interventions for youth with disruptive behavior problems (DBP). Despite evidence of the unique correlates and critical consequences of girls' DBP, there is a dearth of research examining treatment efficacy for girls. This meta-analysis of 167 unique effect sizes from 29 studies (28,483 youth, 50% female; median age: 14) suggests that existing treatments have a medium positive effect on DBP (g = .33). For both boys and girls, the most effective interventions included (a) multimodal or group format, (b) cognitive skills or family systems interventions, and (c) length-intensive programs for (d) younger children. Boys demonstrated significantly greater treatment gains from group format interventions compared to girls, which is particularly important given that the group program format was the most prevalent format for boys and girls, with 14 studies involving 10,433 youth encompassing this category. This is the first meta-analysis to examine the effect of program characteristics in a sample of programs selected to be specifically inclusive of girls. Given that girls are underrepresented in intervention research on DBP, findings are discussed in terms of gender-responsive considerations and elucidating how key aspects of program structure can support more effective intervention outcomes for youth.

The Effect of Auricular Acupressure and Positive Group Psychotherapy With Motivational Interviewing for Smoking Cessation in Korean Adults.

The aim of this study was to investigate the effects of positive group psychotherapy with auricular acupressure on tobacco withdrawal symptoms and smoking cessation. This study used a randomized controlled trial design. Participants were randomly assigned to 1 of 3 groups: group 1 (counseling and auricular acupressure), group 2 (counseling and placebo acupressure), and the control group (self-help for smoking cessation). Positive group psychotherapy and auricular acupressure were performed once a week for 6 weeks. The smoking cessation rates for 1 year in groups 1 and 2 were higher than that in the control group (9.5%, 15.6%, and 0%, respectively; odd ratio: 7.98, P = .019, n = 109). There was a significant difference of tobacco withdrawal symptoms among the 3 groups over 4 weeks (F = 2.9, P = .04). The mean differences between week 1 and week 4 among the 3 groups were statistically significant (4.7 ± 6.96, 5.18 ± 7.9, and 0.14 ± 7.15, F = 4.25, P = .018).

The effects of group mindfulness-based cognitive therapy in nursing students: A quasi-experimental study.

BACKGROUND: Academic and clinical stressors are experienced by most nursing students enrolled in a nursing education program. The students who cannot effectively deal with these stressors experience stress, anxiety and depression. OBJECTIVE: The aim of this study was to determine the effects of group mindfulness-based cognitive therapy on mindfulness, depression, anxiety, and stress levels in nursing students. DESIGN: This quasi-experimental study was carried out using a nonrandomized control group pre-test, post-test, and follow up design. SETTING: Department of Nursing, Faculty of Health Sciences, University of Aksaray, Turkey. PARTICIPANTS: Eighty-two second-year undergraduate university nursing students. METHODS: The group mindfulness-based cognitive therapy program was conducted with the experimental group. The Mindful Attention Awareness Scale (MAAS) and The Depression, Anxiety and Stress Scale (DASS) were measured at pre- and post- intervention, and at a 4-months follow-up. RESULTS: The post-test mean scores of MAAS of the experimental group were statistically higher than the control group (p = .006). When the mean scores obtained in the pre-test, post-test and follow-up measurements were compared, the mean scores of MAAS increased (p = .000) and stress scores decreased significantly in the experimental group (p = .004). CONCLUSION: A group mindfulness-based cognitive therapy program conducted with nursing students had an effect on students' mindful attention awareness and stress levels. These study results indicate that this program can be used to reduce the levels of stress in nursing students.

Early maladaptive schemas impact on long-term outcome in patients treated with group behavioral therapy for obsessive-compulsive disorder.

BACKGROUND: Some studies have previously found that certain elevated early maladaptive schemas (EMSs) are negative predictors for outcome for patients with obsessive-compulsive disorder (OCD) treated with Cognitive-Behavioral Therapy (CBT) or Exposure and Response Prevention (ERP). The current study explores whether EMS were related to reductions in OCD symptom severity at long-term follow-up (Mean = 8 years) after group ERP for patients with OCD. The central hypothesis was that patients with no response to treatment or patients who relapsed during the follow-up period were more likely to have elevated pre-treatment EMSs compared to those who responded to initial treatment and maintained gains over time. We also investigated whether there were any differences in change over time of overall EMS between patients who were recovered versus patients who were not recovered at extended follow-up. METHODS: Young Schema Questionnaire -Short Form (YSQ-SF), Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), Beck Depression Inventory (BDI) were measured in 40 OCD patients in a general outpatient clinic before and after group ERP, after 12-months and at extended follow-up. To analyze the predictors, a multiple regression analyses was conducted. Changes in overall EMS was analyzed by mixed models procedures. RESULTS: The major finding is that patients with high pre-treatment YSQ-SF total scores were less likely to respond to initial treatment or were more likely to relapse between post-treatment and the extended follow-up. The YSQ-SF total score at pre-treatment explained 10.5% of the variance of extended long-term follow-up outcome. The entire sample experienced a significant reduction in overall EMS over time with largest reduction from pre- to post-test. There were no statistically significant differences in total EMS change trajectories between the patients who were recovered at the extended follow-up compared to those who were not. CONCLUSION: The results from the present study suggest that patients with higher pre-treatment EMSs score are less likely to recover in the long-term after receiving group ERP for OCD. A combined treatment that also targets early maladaptive schemas may be a more effective approach for OCD patients with elevated EMS who don't respond to standard ERP.

Effectiveness of methamphetamine abuse treatment: Predictors of treatment completion and comparison of two residential treatment programs.

BACKGROUND: There is an increasing demand of evidence-based treatment options for methamphetamine users, but research in this field is limited. This study therefore evaluates the efficacy of two residential treatment programs for methamphetamine users. METHOD: A total of 108 patients with a history of methamphetamine abuse from two inpatient rehabilitation centers were studied for psychiatric symptoms, craving, psychosocial resources, and cognitive functioning at the start and end of therapy. Patients from one center ("amphetamine type stimulant group") received conventional group therapy plus an additional 10 h of group therapy focusing on stimulant use. Patients from the other center ("treatment as usual") received conventional group therapy only. Predictors of drop-out were estimated. RESULTS: A drop-out rate of 40.7% was observed without a significant difference between both centers. Patients remained significantly longer in treatment as usual compared to amphetamine type stimulant treatment. Irrespective of treatment program, craving and psychiatric symptoms significantly decreased while psychosocial resources, processing speed, and cognitive flexibility improved over time. Other cognitive measures yielded mixed results. History of injection drug use was a significant predictor for treatment drop-out. CONCLUSIONS: Existing treatments are effective in reducing craving and psychiatric symptoms. Additional stimulant specific groups do not appear to influence treatment completion and secondary outcome measures. Institutions should therefore offer treatment for methamphetamine users, even if they do not provide a therapy content focusing on methamphetamine. History of injection drug use should receive attention in treatment to prevent drop-out. Changes in cognitive functioning need to be further explored.

Auricular Acupressure and Positive Group Psychotherapy With Motivational Interviewing for Smoking Cessation.

Each year, 40% to 60% of smokers try to quit, but smoking cessation success rate for 1 year was 1% to 9% without professional help and 7% to 40% with professional help. The purpose of this study was to examine the effects of group counseling with auricular acupressure on smoking cessation and tobacco withdrawal symptoms. This study is a randomized controlled trial. This study was performed at a university in South Korea. Fifty-five smokers were randomly assigned to 3 groups: group 1 (auricular acupressure + counseling), group 2 (placebo acupressure + counseling), and the control group (self-help smoking cessation). Group counseling and auricular acupressure were undertaken once a week for 6 weeks. The smoking cessation rate in group 1 for 1 year was significantly higher than that in group 2 and the control group (22.2%, 5.3%, and 5.6%, respectively). Tobacco withdrawal symptom scores were significantly decreased in group 1 compared with that in group 2 over 6 weeks (F = 3.2, P = .025). Auricular acupressure with group counseling was effective and group counseling alone was not effective for 1-year smoking cessation.

[Feasibility and effects of a psychotherapeutic group intervention for caregiving relatives of people with dementia]. / Machbarkeit und Effekte einer psychotherapeutischen Gruppenintervention für pflegende Angehörige von Menschen mit Demenz.

INTRODUCTION: Family caregivers of people with dementia (PwD) have a high burden and therefore are themselves at a high risk for psychiatric and somatic morbidities. Although individual psychotherapy has been shown to be a potentially effective treatment, it is rarely used by family caregivers. Possible reasons are poor accessibility and time restrictions on the side of the caregiver. AIM: To test the efficacy of a short-term and low threshold psychotherapeutic group intervention for family caregivers of PwD with respect to mental stability of the caregivers. MATERIAL AND METHODS: Data from a 12-week psychotherapeutic group intervention (10 participants each in the intervention and control groups) were analyzed. Main topics of the intervention were: personal limits, dysfunctional thoughts, emotions and resource activation. Primary endpoints were an increase of perceived self-efficacy and reduction of depressive symptoms using SWE and ADS questionnaires before, directly and 3 months after the end of the intervention. RESULTS: A gain in perceived self-efficacy did not reach statistical significance, whereas depressive symptoms showed a statistically significant increase in the intervention group over time compared to the control group. DISCUSSION: The intervention did not reach its primary endpoints. Possible reasons are the fact that the group was highly heterogeneous with respect to dementia etiology and the low number of participants. The short duration of the intervention may have reduced the potential of the program to address all urgent needs of the participants.

Efficacy of group psychotherapy for posttraumatic stress disorder: Systematic review and meta-analysis of randomized controlled trials.

OBJECTIVE: The present meta-analysis evaluates the efficacy of group psychotherapy for post-traumatic stress disorder (PTSD) in adults directly compared to no treatment or active treatments examined in randomized controlled trials (RCTs). METHOD: Electronic databases were searched for eligible studies. Effects on PTSD symptoms, depression, and anxiety were extracted. Between- and within-group effect sizes (Hedges' g) were calculated using a random-effects model. Data were adjusted to account for dependencies among observations in groups. RESULTS: Twenty RCTs were included comprising 2244 individuals. Results showed significant effects of group psychotherapy in reducing symptoms of PTSD compared to no-treatment control groups (k = 13; g = 0.70; 95% CI: 0.41; 0.99). No significant differences in efficacy were found between group psychotherapy and other active treatments (k = 8; g = 0.13; 95% CI: -0.16; 0.42). Moderator analyses confirmed gender and trauma type as important moderators of within-treatment effects for PTSD. CONCLUSIONS: Group treatments are associated with improvements in symptoms of PTSD. Particularly, the efficacy of exposure-based cognitive-behavioral group therapy (group CBT) is empirically well demonstrated. Still little is known about the effects of group treatment approaches other than CBT and the comparative efficacy to alternative treatments such as individual therapy or pharmacotherapy. Clinical or Methodological Significance of this Article: This review provides an empirical base for group therapy as a viable treatment alternative for future PTSD practice guidelines. Although less is known about its comparative efficacy to alternative PTSD treatments such as individual therapy or pharmacotherapy, sufficient evidence exists to recommend group therapy (particularly exposure-based group CBT) for those who might not be able to access alternative treatments. Trauma type and gender proved to be important moderators of group treatment outcome. The results further indicate that the evidence base of recommendations for group therapy in current international treatment guidelines needs to be updated.

Moderation of improvement in self-efficacy following group psychotherapy for PTSD.

Posttraumatic stress disorder (PTSD) is a primary mental health concern of veterans. In clinical settings, efforts to improve broad facets beyond symptom amelioration and consideration of moderators of treatment effectiveness in this population are needed for continued improvement in care. General self-efficacy (GSE) has been indicated as a useful treatment target because of its association with positive outcomes such as increased positive health behaviors. Both race and educational attainment represent potential moderators of treatment response that are relevant for a veteran PTSD population. This study aimed to determine whether a PTSD Recovery Group Therapy Program resulted in improvement in GSE and whether racial and educational differences moderated GSE outcomes. Archival data were examined from male veterans (N = 450) receiving mental health services at a Veterans Affairs medical center using multilevel modeling to examine change in GSE over the course of treatment as well as moderation of change in GSE as a function of race and educational attainment. After completion of group therapy, results indicated there was significant improvement in GSE, with significantly different improvement based on education. Higher levels of education were associated with greater increases in GSE after treatment. Improvement in GSE did not differ by participant race. In clinical settings, efforts to increase GSE and attending to moderators such as educational attainment may be useful for improving PTSD treatment approaches. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Why do psychiatric patients attend or not attend treatment groups in the community: A qualitative study.

BACKGROUND: Non-attendance of treatment groups in the community has been a long-standing problem in mental health care. It has been found to have financial ramifications for services, worsen outcomes for those that do not attend and negatively impact on therapeutic group processes. There is a need to gain a better understanding of patients' reasons for attending or not attending. This study aimed to explore patient views on facilitators and barriers to the attendance of treatment groups in the community. METHODS: The study used interview data collected as part of three studies that investigated treatment groups for psychiatric patients in the community. Sixty-seven interview transcripts were analysed using the framework method. RESULTS: Five themes relating to facilitators of group attendance were identified: opportunity for autonomy; self-acknowledging need and therapist encouragement; optimal group format and safe environment; interest in content and enjoyment; actual and expected benefits of attendance. Four themes related to barriers: not being sufficiently informed; concerns about social interactions and the unknown; limited accessibility; and negative group dynamics. CONCLUSION: To facilitate attendance and reduce attrition to treatment groups in the community clinicians should address patient's wishes for information, capture their interest in the group modality, and potentially offer a 'trial' session. Furthermore, they should make the group location and time as accessible as possible and create a moderately sized group of six to eight patients. In these groups, mutual respect, feelings of safety and encouragement appear essential to make patients feel they can benefit from attendance.

Psycho-educational group therapy in acute psychiatric units: creating a psychosocial culture. An update of spread and effectiveness of a psychosocial intervention in Italian psychiatric wards.

The implementation of a Cognitive-Behavioural Group Intervention (CBGI) in Italian general hospital psychiatric units started in the years 2000-2001 in two Italian regions. Over the years it has became more and more popular also in other psychiatric units located in the rest of the country. Based on the "stress-vulnerability-coping" theory, the CBGI is a replicable and innovative psychosocial intervention that promotes the active involvement of inpatients in decisions concerning their individual objectives and care. In the present article, the authors briefly describe this intervention and the main findings regarding its implementation in several psychiatric units in different Regions of Italy. The authors emphasize that such a psychosocial approach to inpatient care is needed because it can produce improved clinical outcomes, reduction in untoward events and increased staff and inpatient satisfaction. However, its introduction and use still represent a major cultural and managerial challenge in our country.

Does response to the STEPPS program differ by sex, age, or race in offenders with borderline personality disorder?

Systems Training for Emotional Predictability and Problem Solving (STEPPS) is an evidence-based group treatment program for ambulatory patients with borderline personality disorder (BPD). The program was introduced to the Iowa correctional system in 2005, and groups have been ongoing ever since. In this analysis, we examine whether response to the STEPPS program differs based on sex, age (<40/≥40 years), or race/ethnicity (minority/non-minority) using data collected in Iowa prisons and in community corrections. Subjects were recruited and assessed by correctional staff. Offenders with BPD were offered the opportunity to participate in the STEPPS program. The presence of BPD was assessed using a module from the Structured Interview for DSM-IV Personality. Efficacy assessments included the Borderline Evaluation of Severity Over Time Scale, the Beck Depression Inventory, and the Positive and Negative Affectivity Scale. The Client Satisfaction Questionnaire-8 assessed program satisfaction. Data on 77 offenders were analyzed. All participated in the STEPPS program and 53% completed all 20 weeks. The analysis showed that there were no significant differences in response to STEPPS in terms of sex, age, or race/ethnicity on any of the three efficacy measures. Women expressed greater satisfaction than men, but there were no differences with regard to age or race/ethnicity. The implications of the findings are discussed.

Measuring Use of Evidence Based Psychotherapy for Posttraumatic Stress Disorder in a Large National Healthcare System.

To derive a method of identifying use of evidence-based psychotherapy (EBP) for post-traumatic stress disorder (PTSD), we used clinical note text from national Veterans Health Administration (VHA) medical records. Using natural language processing, we developed machine-learning algorithms to classify note text on a large scale in an observational study of Iraq and Afghanistan veterans with PTSD and one post-deployment psychotherapy visit by 8/5/15 (N = 255,968). PTSD visits were linked to 8.1 million psychotherapy notes. Annotators labeled 3467 randomly-selected psychotherapy notes (kappa = 0.88) to indicate receipt of EBP. We met our performance targets of overall classification accuracy (0.92); 20.2% of veterans received ≥ one session of EBP over the study period. Our method can assist with identifying EBP use and studying EBP-associated outcomes in routine clinical practice.

Bayesian models for semicontinuous outcomes in rolling admission therapy groups.

Alcohol and other drug abuse are frequently treated in a group therapy setting. If participants are allowed to enroll in therapy on a rolling basis, irregular patterns of participant overlap can induce complex correlations of participant outcomes. Previous work has accounted for common session attendance by modeling random effects for each therapy session, which map to participant outcomes via a multiple membership construction when modeling normally distributed outcome measures. We build on this earlier work by extending the models to semicontinuous outcomes, or outcomes that are a mixture of continuous and discrete distributions. This results in multivariate session effects, for which we allow temporal dependencies of various orders. We illustrate our methods using data from a group-based intervention to treat substance abuse and depression, focusing on the outcome of average number of drinks per day. Alcohol and other drug abuse are frequently treated in a group therapy setting. If 2 clients attend the some of the same sessions, we might expect that-on average-their posttreatment outcomes would be more similar than if they had not attended any sessions together. Hence, if participants are allowed to enroll in therapy on a rolling basis, irregular patterns of session attendance can induce complex relationships between participant outcomes. Statistical methods have been developed previously to account for rolling admission group therapy when the outcomes are normally distributed. In the case of alcohol and other drug use interventions, however, a substantial fraction of participants often report zero use after treatment. We extend previous work to build models that accommodate semicontinuous outcomes, which are a mixture of continuous and discrete distributions, for such situations. We find that modern Bayesian statistical methods and software allow users to efficiently estimate nonstandard models such as these. We illustrate our methods using data from a group-based intervention to treat substance abuse and depression, focusing on the outcome of average number of drinks per day. We find that the intervention is associated with a drop in the probability of any drinking, but find no evidence of a change in the amount of drinking, conditional on some drinking. (PsycINFO Database Record