Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Dropouts”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 73 records · Page 4Linked to original sources
PubMed1997

Factors associated with dropout in a group cognitive behaviour therapy for mood disorders.

The high prevalence of premature attrition from psychotherapy is a phenomenon which has been well recognized in the psychological literature. The pressing concern that a number of clients may not be benefiting from treatment because they are dropping out has led to a plethora of research in the area of individual psychotherapy. No studies, however, have attempted to investigate the characteristics of dropout in group cognitive behaviour therapy for depression. To address this gap in research, the present study examined the factors associated with dropout in a group cognitive behaviour therapy for depression, using 131 Ss who went through the group therapy for 12 weeks. The results showed that sociodemographic measures (e.g. age) and measures of depressive symptoms (e.g. depression scores) did not discriminate dropouts from completers. An investigation of patterns of mood changes in the course of the therapy also failed to find significant differences between the dropouts and completers. However, weekly therapist rating of client participation revealed that dropouts participated significantly less than completers during the therapy sessions. The results are discussed in light of the findings of current literature and future research in premature attrition.

Adolescent↗
PubMed1999

Factors related to dropout in a study of head and neck cancer patients after surgery.

The extent and nature of dropout was assessed in a longitudinal study whose objective was to define and quantify the functional effects of oral surgical resection and reconstruction on speech and swallowing function in patients with head and neck cancer. Of 150 patients who were enrolled to be followed up with speech and swallow assessments for 1 year after surgery, 113 (75%) dropped out and 37 (25%) returned to complete the study at the final 12-month evaluation point. In general, those completing the study had a smaller resection than the patients who dropped out before the 12-month evaluation. Fifty percent of the dropout was accounted for by medical reasons, 23% by administrative reasons, and 27% by patient-specific reasons (i.e., reasons known only to the patient). Analysis of the dropout categories revealed that higher cancer stage, larger volume of resection, and having a flap surgical closure versus a primary closure or skin graft increased a patient's chance of dropping out. A larger volume of resection was also related to an increased chance of being a patient-specific dropout. Patients who reported no or low alcohol usage had a greater chance of completing follow-up than being a patient-specific dropout.

Adult↗
PubMed2003

Dropout from 12-step self-help groups: prevalence, predictors, and counteracting treatment influences.

Attendance at 12-step self-help groups is frequently recommended as an adjunct to professional substance use disorder (SUD) treatment, yet patient dropout from these groups is common. This study assessed the prevalence, predictors, and treatment-related factors affecting dropout in the first year following treatment for 2,778 male patients. Of these, 91% (2,518) were identified as having attended 12-step groups either in the 90 days prior to, or during, treatment. At 1-year followup 40% had dropped out. A number of baseline factors predicted dropout. Importantly, patients who initiated 12-step behaviors during treatment were less likely to drop out. Further findings suggest patients at highest risk for dropout may be at lower risk if treated in a more supportive environment. Clinicians may decrease the likelihood of dropout directly, by screening for risk factors and focusing facilitation efforts accordingly, and indirectly, by increasing the supportiveness of the treatment environment, and facilitating 12-step involvement during treatment.

Adult↗
PubMed2005

Distress tolerance as a predictor of early treatment dropout in a residential substance abuse treatment facility.

A large percentage of individuals who enter residential substance abuse treatment drop out before completing treatment. Given that early treatment dropout places individuals at an increased risk for relapse, identifying the mechanisms underlying treatment dropout would have several important theoretical and clinical implications. In the current study, the authors examined levels of psychological and physical distress tolerance as a predictor of early treatment dropout in a residential substance abuse treatment facility. In a sample of 122 individuals entering a residential substance abuse treatment facility, level of psychological distress tolerance was predictive of early treatment dropout above and beyond relevant self-report variables. There was no relationship between physical distress tolerance and early treatment dropout. Implications for future studies and treatment development or modification are discussed.

Adult↗
PubMed2001

Effect of cause and time of dropout on the residual GFR: a comparative analysis of the decline of GFR on dialysis.

BACKGROUND: The decline of residual renal function (RRF) on dialysis has been reported to be slower in peritoneal dialysis (PD) then hemodialysis (HD). However, some clinicians have questioned whether this reported difference might not be caused by selection bias. In particular, if continuous ambulatory PD (CAPD) delivers only marginally adequate therapy as some clinicians speculate, then perhaps those patients on CAPD with low glomerular filtration rate (GFR) are purposefully switched to HD. If true, transferring CAPD patients with low GFR to HD could create a selection bias that very well may account for the differences in GFR between PD and HD. This is particularly problematic if one then censors patients at the time of transfer from PD to HD from analysis (that is, patients are no longer followed in the study once they have switched treatment modalities). When this occurs, the data are said to be informatively censored, a term used by statisticians to describe any kind of systematic bias associated with censored or incomplete data. In particular, informative censoring occurs when patients who die or transfer to another modality very early have an associated lower starting GFR or higher rate of decline of GFR than patients who either complete the study or who die or transfer much later. If patient dropout is indeed related to the rate of decline in GFR and if this relationship differs between PD and HD but is ignored in the analysis, then the results of such analysis may be biased. METHODS: This article analyzes the decline in GFR among 141 incident dialysis patients (39 HD and 102 PD) undergoing either HD or PD at the University of Missouri-Columbia. The decline in GFR was modeled as a nonlinear function of time, taking into account the possibility that missing values of GFR may be associated with patient dropout (death, transfer to another modality, or transplantation). To safeguard against this possibility, we utilized a conditional nonlinear mixed-effects model. The model was used to fit and compare each patient's GFR data to time adjusting for the patient's treatment modality (HD vs. PD), cause of dropout (death, transfer, transplant, lost to follow-up/study ended), and time to dropout. The model allowed a comparison of the starting GFR and the rate of decline in GFR between PD and HD adjusting for these three factors. RESULTS AND CONCLUSIONS: The results of our analysis suggest that such informative censoring is independent of treatment modality and that even after correcting for dropout caused by death or transfer to another modality, patients starting on PD have a lower rate of decline in GFR (that is, better preservation of GFR) than patients starting on HD.

Aged↗
PubMed1999

Using the suicide risk screen to identify suicidal adolescents among potential high school dropouts.

OBJECTIVE: To examine the validity of the Suicide Risk Screen (SRS) for identifying suicide-risk youths among potential high school dropouts. METHOD: Five hundred eighty-one potential dropouts, aged 14 to 20 years, participated in a 3-stage case identification protocol. A potential dropout pool was created in 7 schools; students, randomly selected, completed a questionnaire containing the SRS and participated in an assessment interview. Validity measures included Reynolds' Suicide Ideation Questionnaire (SIQ-JR) and 2 clinician rating scales, the Direct Suicide Risk (DSR) and Clinical Risk Assessment (CRA). RESULTS: Suicide-risk severity was significantly associated with categorization defined by the SRS criteria. SRS sensitivity ranged from 87% to 100%, specificity from 54% to 60%. Of 7 SRS elements, depression, suicidal ideation, and suicide threats predicted all validity measures. Suicide attempts predicted the DSR and CRA, but not Reynolds' SIQ-JR. Drug involvement, though relatively weaker, consistently predicted all validity measures. No additional psychosocial indicators improved the prediction of SIQ-JR or the DSR. Family support, likelihood of dropout, and risky behaviors, however, were additional predictors of the CRA ratings. CONCLUSIONS: The SRS is an effective and pragmatic method for identifying suicide-risk youths among potential dropouts in school settings.

Adolescent↗
PubMedDate not supplied

Factors differentiating dropouts from completers in a longitudinal, multicenter clinical trial.

BACKGROUND: Subject dropout from a prospective, longitudinal trial can produce biases in the remaining sample that affect study findings and their interpretation, yet little is known about factors contributing to dropout. OBJECTIVE: To determine characteristics differentiating those who complete from those who drop out of a longitudinal multicenter clinical trial. METHODS: In this study, 578 parents and other caretakers of infants at risk for cardiopulmonary arrest enrolled in a longitudinal trial investigating the psychosocial impact of cardiopulmonary resuscitation training. In this secondary analysis, the baseline sociodemographic, emotional, psychosocial, and infant characteristics of those who dropped from the trial were compared with those who completed the study. RESULTS: The study was completed by 60% (n = 347) of the participants. Those most likely to drop out were fathers or other caretakers (vs. mothers) employed outside the home who spoke English (vs. Spanish); were assigned to an experimental group (vs. a control group); had higher levels of depression, hostility, and overall psychosocial distress; and held negative views about health care. CONCLUSION: Although a few sociodemographic characteristics differentiated dropouts from completers, personal, emotional and psychosocial factors were the predominant predictors of dropouts. Other reputed sources of retention difficulties (e.g., income, education, minority status, lack of social support, or problems with family functioning) did not predict dropout.

Adult↗
PubMed2004

Pretreatment attrition and dropout in an outpatient clinic for anxiety disorders.

OBJECTIVE: Treatment attrition represents a considerable problem for efficient delivery of care for mental disorders. The present study examined rates and predictors of pretreatment attrition and dropout from outpatient treatment for anxiety disorders. METHOD: The influence of clinical, demographic, clinician and system variables on pretreatment attrition (treatment refusal or non-attendance) and dropout were analysed in a consecutive sample of 731 clients treated at an anxiety disorders clinic in Sydney. RESULTS: Pretreatment attrition was common (30.4%) but dropout once clients had commenced treatment was rare (10.3%). Milder pretreatment symptoms were associated with treatment dropout and comorbid depression or depressive symptoms were associated with higher probability of both pretreatment attrition and dropout. Demographic, clinician and system influences were present but less important. CONCLUSION: Targeting of individuals with comorbid anxiety and depression may reduce treatment attrition rates among individuals with anxiety disorders presenting for treatment.

Adult↗
PubMed2002

Determinants of dropout in a community intervention trial on the caries-preventive effect of chewing gums.

OBJECTIVES: This study describes determinants of dropout in a three-year community intervention trial of the effects of sugar-substituted chewing gums on caries progression rates. METHODS: A total of 602 children aged 9-14 years from 28 school classes in five secondary schools in Kaunas, Lithuania, were given a clinical and radiographic baseline caries examination. The schools were assigned randomly to one of the following interventions: sorbitol/carbamide gum, sorbitol gum, xylitol gum, placebo gum, or no gum. Children in the four intervention schools were asked to chew at least five pieces of chewing gum per day, preferably after meals. The children were reexamined clinically after one, two, and three years of study, and radiographically after three years. RESULTS: A total of 33 children (6%) had dropped out before the one-year clinical examination, an additional 29 children (5%) dropped out before the two-year examination, and a further 108 children (18%) dropped out before the final three-year clinical examination. A total of 230 children (39%) were not available or refused to participate in the three-year radiographic examination. Analyses using random effect logit models showed that, irrespective of time of follow-up, most of the cluster variation in dropout was related to school classes within the primary randomization units, the schools. The most important predictors of individual dropout were age and baseline caries experience, whereas sex was not associated with dropout. CONCLUSIONS: The results show that a community intervention trial of chewing gums carried out among schoolchildren is subject to cluster effects. Dropout was not primarily related to the randomization units themselves, i.e. the schools, but rather to subclusters of classes within the schools. These findings should be considered when designing community intervention trials and practical preventive programs among schoolchildren.

Adolescent↗
PubMedDate not supplied

Dropout from brief psychotherapy in anorexia nervosa.

BACKGROUND: Dropout from psychotherapy is an important issue that has received little systematic attention. This study investigated the phenomenon of dropout from brief psychotherapy for anorexia nervosa (AN). METHODS: 99 outpatients suffering from AN of the restrictor type (n = 53) or binge/purging type (n = 46) were evaluated. Their clinical and personal characteristics were recorded, and body mass index was calculated for participants. They were administered the Eating Disorder Inventory-II (EDI-II), the State-Trait Anger Expression Inventory (STAXI) and the Temperament and Character Inventory (TCI). RESULTS: Significant differences in some baseline psychopathologic (EDI-II, STAXI) and personality (TCI) variables emerged from the comparison between dropouts and completers. Patients who dropped out of the treatment showed higher levels of anger temperament, anger expression-in and expression-out and lower scores for the dimensions of character (low self-directedness and low cooperativeness). No differences were found between the two groups regarding sociodemographic and clinical variables. CONCLUSIONS: Dropout from brief psychotherapy seems to be related to either psychopathologic or personality aspects, such as the tendency to repress anger, which is encountered also in psychosomatic disorders, and the presence of more compromised dimensions of character, typical of subjects with personality disorders. This study of dropout from brief psychotherapy in AN provided interesting results that will need further confirmation. Possible implications for treatment are addressed.

Adolescent↗
PubMed2000

Predictors of treatment dropout from a spouse abuse abatement program.

This study evaluated predictors of dropout among men who began and attended at least 1 session of a cognitive-behavioral, skills training oriented spouse abuse abatement counseling program. Based on prior research, a number of demographic, criminal justice, partner violence pattern, and personality characteristics were studied. Dropout prediction was assessed at 2 phases of program participation, during assessment (early drop) and during intervention (late drop). Overall, few of the variables studied predicted dropout. Early dropout was predicted by high rates of police contact for violent crimes, failure to self-report an alcohol problem, and paranoid personality characteristics. Late dropout was predicted by both high and moderate levels of police contact for violent crimes, and borderline personality characteristics. An Age x Violent Crime interaction suggested that young violent offenders are more likely to complete treatment. The overall model accounted for only 7.15% of the variance. Clinical and research implications are discussed.

Adult↗
PubMed2006

Remission, dropouts, and adverse drug reaction rates in major depressive disorder: a meta-analysis of head-to-head trials.

OBJECTIVE: To summarize remission rates and dropouts due to adverse drug reactions (ADRs) or lack of efficacy (LoE) of serotonin-norepinephrine reuptake inhibitors (SNRIs), selective serotonin-reuptake inhibitors (SSRIs), and tricyclic antidepressants (TCAs) in treating major depressive disorder. METHODS: We searched MEDLINE, EMBASE, IPA, and the Cochrane International Library from 1980-2005. Meta-analysis summarized outcomes from head-to-head randomized clinical trials comparing >or= 2 drugs from three antidepressants classes (SNRIs, and/or SSRIs, and/or TCAs) followed by >or= 6 weeks of treatment. Remission was a final Hamilton Depression Rating Scale (HAMD) score 0.05 for SNRIs versus TCAs; p < 0.001 for TCAs versus SSRIs and SNRIs versus SSRIs). When categorized as inpatients (n = 582) and outpatients (n = 1613), SNRIs had the highest remission rates (52.0% for 144 inpatients and 49.3% for 559 outpatients). SNRIs had lowest overall dropouts (26.1%), followed by SSRIs (28.4%), and TCAs (35.7%). Dropouts due to ADRs and LoE were 10.3% and 6.2% for SNRIs, 8.3% and 7.2% for SSRIs, and 19.8% and 9.9% for TCAs, respectively (p > 0.05 for ADR dropouts only). One limitation was the inclusion of only venlafaxine-XR; results may not be the same for immediate release forms. In addition, few studies reported remission rates. CONCLUSIONS: SNRIs had the highest efficacy remission rates (statistically significant for inpatients and outpatients), and the lowest overall dropout rates, suggesting clinical superiority in treating major depression.

Adrenergic Uptake Inhibitors↗
PubMed1988

A retrospective study of dropout rates from a community mental health centre and associated factors.

To ascertain if decentralization of mental health services, making them more accessible to the public, would be reflected in a decrease in the dropout rate, a comparison was made between dropout rates just prior to and immediately following decentralization. This involved examining 1350 closed files representing cases seen during a three-year period after decentralization and comparing the findings with those of a previous study of files of 588 cases seen during a year before decentralization. The dropout rate decreased from 46% to 43%; while statistically significant, this change was too small to be of any practical importance. However, analysis of demographic and clinical variables in the post-decentralization sample proved most interesting. On the whole, it confirmed the findings from previous investigations, i.e. dropouts tended to be younger, less well-educated, of low socioeconomic status (SES), and were most commonly diagnosed as having a personality disorder. Although some therapists had a comparatively large proportion of dropouts, this discrepancy may reflect the distribution of difficult cases rather than the effectiveness of the therapists.

Alberta↗
PubMed2002

[Research on factors for dropout from treatment by outpatients of alcohol abuse or alcohol dependence (II)--Based on questionnaire's outcome].

This research examines a strategy to avoid dropout from treatment by outpatients of alcohol abuse and dependence. Questionnaire was used and outcome was analyzed in order to elucidate factors of dropout and examine measures for its avoidance. The questionnaire made on the occasion of "Research on Factors of Dropout from Treatment by Outpatients of Alcohol Abuse or Dependence (I)" was used. 376 subjects was surveyed with 178 answers (47.3%), out of which 167 (44.5%) were valid. The analyses of answers showed as factors of dropout: dissatisfaction for content and environment of treatment, transfer to internal medicine department, and almost every day drinking. Reasons for continuation of treatment were: satisfaction for content of medical examination, admission to specialized treatment facilities, participation to self-help groups, feeling of happiness for treatment, since beginning intended to continue treatment. As a measure to avoid treatment dropout, improvements of content and environment of treatment and better relationship among medical staffs and clients were suggested.

Alcoholism↗
PubMed2005

Dropout from exercise programs for seniors: a prospective cohort study.

This study examines dropout incidence, moment of dropout, and switching behavior in organized exercise programs for seniors in the Netherlands, as determined in a prospective cohort study (with baseline measurements at the start of the exercise program and follow-up after 6 months; N = 1,725, response rate 73%). Participants were community-living individuals 50+ who participated in different forms of organized exercise programs. The average dropout incidence was 0.15 per 6 months, which is lower than that for the general population. The dropout incidence and the timing of dropout differed substantially between the exercise programs. In total, 31% of people who dropped out of one type of exercise program switched to another type of exercise. The type of program and exercise had a strong effect on differences in this switching behavior. It is recommended that switching behavior be monitored in future studies.

Age Factors↗
PubMed1998

Selection models for repeated measurements with non-random dropout: an illustration of sensitivity.

The outcome-based selection model of Diggle and Kenward for repeated measurements with non-random dropout is applied to a very simple example concerning the occurrence of mastitis in dairy cows, in which the occurrence of mastitis can be modelled as a dropout process. It is shown through sensitivity analysis how the conclusions concerning the dropout mechanism depend crucially on untestable distributional assumptions. This example is exceptional in that from a simple plot of the data two outlying observations can be identified that are the source of the apparent evidence for non-random dropout and also provide an explanation of the behaviour of the sensitivity analysis. It is concluded that a plausible model for the data does not require the assumption of non-random dropout.

Animals↗
PubMed2003

Diagnostics for joint longitudinal and dropout time modeling.

We present a variety of informal graphical procedures for diagnostic assessment of joint models for longitudinal and dropout time data. A random effects approach for Gaussian responses and proportional hazards dropout time is assumed. We consider preliminary assessment of dropout classification categories based on residuals following a standard longitudinal data analysis with no allowance for informative dropout. Residual properties conditional upon dropout information are discussed and case influence is considered. The proposed methods do not require computationally intensive methods over and above those used to fit the proposed model. A longitudinal trial into the treatment of schizophrenia is used to illustrate the suggestions.

Humans↗
PubMed1977

The dropout and the terminator: a methodological note on definitions.

The numerical criteria of either mean or median number of sessions as a nethodological procedure for categorizing patients as dropouts were compared with the clinically based definition in a sample of 221 outpatients. Lack of agreement was noted in two primary areas. A large number of clinically defined terminators were classified incorrectly as dropouts, and a large number of clinically defined dropouts were not classified when the mean or median number of sessions was used as a criterion to classify the dropout. The results of the study supported the contention that definitions of dropping out based on number of sessions lead to categorizations that are not comparable to those based on knowledge of the clinical data.

Adolescent↗