Practical problems in recruiting patients with schizophrenia into randomised controlled trials

Attrition in longitudinal studies among patients with schizophrenia and other psychoses; findings from the STRATA collaboration

A major problem with longitudinal studies is the bias generated due to attrition, particularly apparent amongst patients suffering from psychotic disorders. Factors associated with study-participation were investigated as part of a larger research collaboration (STRATA). Out of 479 eligible participants, only 50 (10,4%) were successfully followed up. The present study investigated whether study participation differed depending on baseline characteristics. Results indicated that individuals who did not participate were more likely to report an alcohol use disorder while those who did respond were more likely to have been in full-time education for longer and be of white ethnicity. Participation did not differ depending on diagnosis, symptoms, GAF, age of onset or depression.

A pilot comparison of medical records sensitivity perspectives of patients with behavioral health conditions and healthcare providers

This pilot study compares medical record data sensitivity (e.g., depression is sensitive) and categorization perspective (e.g., depression categorized as mental health information) of patients with behavioral health conditions and healthcare providers using a mixed-methods approach employing patient's own EHR. Perspectives of 25 English- and Spanish-speaking patients were compared with providers. Data categorization comparisons resulted in 66.3% agreements, 14.5% partial agreements, and 19.3% disagreements. Sensitivity comparisons obtained 54.5% agreement, 11.9% partial agreement, and 33.6% disagreements. Patients and providers disagreed in classification of genetic data, mental health, drug abuse, and physical health information. Factors influencing patients' sensitivity determination were sensitive category comprehension, own experience, stigma towards category labels (e.g., drug abuse), and perception of information applicability (e.g., alcohol dependency). Knowledge of patients' sensitivity perceptions and reconciliation with providers could expedite the development of granular and personalized consent technology.

Engaging People with Enduring Psychotic Conditions in Primary Mental Health Care and Occupational Therapy

For people who have enduring psychotic conditions, interventions need to improve social functioning as well as reducing clinical problems. There is also a need to engage and keep in touch with general practitioner (GP) patients who have fallen out of contact with specialist psychiatric care.

A new model of service was designed to engage this patient group: an expanded primary care team in an inner-city area. The team extended the GP role, provided occupational therapy and care management and used liaison psychiatry. A case study design with mixed methods was used to investigate the new service. This article reports the quantitative investigation of engagement, clinical and social outcomes and cost consequences.

The results showed that, at the start of the study, 37 people with psychotic conditions were in the sole care of their GPs; of these, 34 (92%) engaged with the new service. The sample of 28 receiving 12 months' interventions started with low levels of social functioning, which required intervention. Following interventions, they showed significant improvements in social functioning, clinical symptoms and Health of the Nation Outcome Scales (HoNOS). The costs were favourable when compared with similar services. The study suggests that expanded primary care, with occupational therapy and care management, can be a feasible service to improve people's engagement and functioning.

Overcoming recruitment barriers revealed high readiness to participate and low dropout rate among people with schizophrenia in a randomized controlled trial testing the effect of a Guided Self-Determination intervention

BACKGROUND

Recruitment is one of the most serious challenges in performing randomized controlled trials. Often clinical trials with participants diagnosed with schizophrenia are terminated prematurely because of recruitment challenges resulting in a considerable waste of resources in the form of time, funding, and the participants' efforts. Dropout rates in schizophrenia trials are also high.Recruitment challenges are often due to patients not wanting to participate in research but can also be due to clinicians' concerns regarding individuals diagnosed with schizophrenia as participants in research. This paper reports how overcoming recruitment challenges not related to patients revealed high readiness to take part and low dropout rates in a one year long randomized controlled trial testing Guided Self-Determination (GSD) among outpatients with schizophrenia receiving treatment in Assertive Outreach Teams in the northern part of Denmark.

METHODS

GSD is a shared decision-making and mutual problem-solving method using reflection sheets, which was developed in diabetes care and adjusted for this study and utilized by patients with schizophrenia. Descriptive data on strategies to overcome recruitment challenges were derived from notes and observations made during the randomized controlled trial testing of GSD in six outpatient teams.

RESULTS

Three types of recruitment challenges not related to patients were identified and met during the trial: 1) organizational challenges, 2) challenges with finding eligible participants and 3) challenges with having professionals invite patients to participate. These challenges were overcome through: 1) extension of time, 2) expansion of the clinical recruitment area and 3) encouragement of professionals to invite patients to the study. Through overcoming these challenges, we identified a remarkably high patient-readiness to take part (101 of 120 asked accepted) and a low dropout rate (8%).

CONCLUSION

Distinction between recruitment challenges was important in discovering the readiness among patients with schizophrenia to take part in and complete a trial with the GSD-intervention.

A comparison of levels of burden in Indian and white parents with a son or daughter with schizophrenia

BACKGROUND

Caregiver burden in mental illness is believed to differ between ethnic groups, but few studies have examined this in schizophrenia in the UK.

AIM

To measure burden in British North Indian Sikh and white British parents with a son or daughter with established schizophrenia managed in outpatient care.

METHOD

A cross-cultural cohort study measuring family factors, patient psychopathology and levels of burden and distress.

RESULTS

Overall levels of burden were low with no significant differences between the groups. Burden subscale scores showed Indian parents were more affected by psychotic behaviours than white parents. The groups also differed on several sociodemographic variables.

CONCLUSION

In stabilized community patients, the overall extent of burden experienced by both Indian and white parents is low and comparable. However, Indian parents were more burdened by psychotic behaviours. This may be a result of co-residence as Indian patients are more likely to live with their families. Social and economic factors in the country of residence and levels of acculturation may also influence levels of burden and the illness behaviours found most bothersome by parents.

A systematic review of reasons for nonentry of eligible patients into surgical randomized controlled trials

BACKGROUND

The low recruitment rates into surgical randomized controlled trials (RCTs) threaten the validity of their findings. We reviewed the reasons for nonentry of eligible patients into surgical RCTs that would form the basis for future prospective research.

METHODS

A systematic review of the English language literature for studies reporting reasons for nonentry of eligible patients into surgical RCTs and of recommendations made to improve the low recruitment rates.

RESULTS

We reviewed 401 articles, including 94 articles presenting the results of 62 studies: 23 reports of recruitment into real surgical RCTs, 11 surveys of patients regarding hypothetical surgical RCTs, 10 surveys of clinicians and 18 literature reviews. The most frequently reported patient-related reasons for nonentry into surgical RCTs were preference for one form of treatment, dislike of the idea of randomization, and the potential for increased demands. Distrust of clinicians caused by a struggle to understand, explicit refusal of a no-treatment (placebo) arm, and the mere inability to make a decision were frequently reported in studies of real RCTs and patient surveys, but were not emphasized in surveys of clinicians and review articles. Difficulties with informed consent, the complexity of study protocols, and the clinicians' loss of motivation attributable to lack of recognition were the most commonly reported clinician-related reasons.

CONCLUSIONS

There seems to be a discrepancy between real reasons for nonentry of eligible patients into surgical RCTS and those perceived by the clinicians, which require further prospective research. A summary and discussion of main recommendations sighted in the literature is presented.

Effect of study criteria on recruitment and generalizability of the results

OBJECTIVE

Clinical trials are indispensable to drug approval process. This research examined the effect of a specific study criteria on recruitment and generalizability of the results.

METHODS

The following were reviewed: (a) the usual inclusion and exclusion criteria for the antipsychotic trials performed at the Institute; (b) epidemiologic data, to determine the effect of study criteria on the target population; and (c) the recruitment procedures/strategies used to identify potential candidates. A survey was conducted to determine the percentage of schizophrenic patients in a conventional outpatient psychiatric clinic conforming to the usual enrollment criteria for antipsychotic trials.

RESULTS

Intensive recruitment efforts in a general population of 3.6 million would have been expected to yield only 632 eligible subjects out of 36,000 suffering from schizophrenia. Out of 632, only 50 contacted the research site after an intensive recruitment effort. From those 50, 30 were excluded during a telephone interview. Of the 20 remaining, 6 were excluded for a variety of reasons during a face-to-face interview. Thus, only 14 subjects out of a population of 3.6 million met the study criteria.

CONCLUSIONS

These results emphasize the rarified nature of patients-volunteers who enter a clinical trial. Inclusion and exclusion study criteria can severely restrict the number of eligible subjects, dictate recruitment strategies, and in turn affect generalizability of the results.

Attitudes to atypical and conventional antipsychotic drug treatment in clinicians participating in the cutlass study

Objectives To examine clinicians' attitudes regarding the relative benefits and risks of conventional and atypical antipsychotic medication, and the perceived validity of the CUtLASS study. To examine the attitudes of participant clinicians' regarding the operation and administration, and the potential clinical impact of the findings. Method Two hundred and sixty-two clinicians were each sent an anonymous questionnaire, and invited to indicate whether they agreed or disagreed with each of to nine statements (from agree to disagree). Results Of the 112 clinicians who responded, 71% supported the CUtLASS study. Thirty-nine percent agreed with the statement that the clinical efficacy of atypicals was superior to conventional antipsychotics, while 27% disagreed and 34% were undecided. Thus, two-thirds of participating clinicians revealed no uncertainty on a key question being tested in the CUtLASS study. Further, the vast majority (97%) considered that atypicals were associated with less severe side effects. Conclusions In clinical studies, recruitment strategies relying on referrals from clinicians may find that some clinicians identify fewer patients than expected. This can lead to a relatively low yield of potential study subjects and possibly a selection bias. Surveys of clinicians approached to participate in clinical studies provide a potential mechanism to explore attitudes relevant to participant recruitment.

Suicide prevention: a study of patients' views

BACKGROUND

Suicide prevention strategies are usually formulated without seeking the views of people with psychiatric illnesses.

AIMS

To establish what helped patients with severe psychiatric illness when they felt suicidal.

METHOD

A semi-structured interview was constructed following transcribed interviews with 12 patients. This was administered to 59 out-patients with serious and enduring mental illness, focusing on factors they found helpful or unhelpful when at their most despairing.

RESULTS

Three-quarters of patients were in contact with psychiatric services when feeling at their lowest, and this contact was generally deemed to be helpful. Social networks were considered just as helpful as psychiatric services by the half of patients who discussed their feelings with friends or relatives. Religious beliefs and affiliations were helpful. Negative influences included the media and the stigma of psychiatric illness.

CONCLUSIONS

Efforts at suicide prevention might usefully focus on enhancing patients' social networks, increasing the likelihood of early contact with psychiatric services and decreasing the stigma attached to psychiatric illness. Larger studies of patients exposed to different service models would be informative.

Randomized controlled trials in schizophrenia: a critical perspective on the literature

OBJECTIVE

The randomized trial provides an opportunity to minimize the inclusion of biases in the evaluation of interventions in psychiatry. Difficulties arise, however, when applying their results to 'real world' clinical practice and decision-making. We, therefore, examined the real world applicability of schizophrenia trials.

METHOD

A narrative overview of the content and quality of the randomized trials relevant to the care of those with schizophrenia is provided.

RESULTS

Complex, explanatory, under-powered randomized drug trials dominate evaluative research in schizophrenia.

CONCLUSION

Explanatory designs are a necessary but insufficient step in establishing the true worth of interventions in schizophrenia. Research from other spheres of mental health and wider health care suggest that pragmatic trials are feasible. This design allows large scale trials to be conducted which include patients which we would recognize from routine practice and which record outcomes which are of genuine interest to decision-makers.

Characteristics of severely mentally ill patients in and out of contact with community mental health services

Community mental health nurses have been criticized for failing to prioritize work with people with a severe or enduring mental illness, many of whom have no contact with specialist mental health services and rely entirely on their general practitioner and primary care team. It is important to ensure that those in contact with specialist services actually need this level of input but, conversely, that those in contact with only primary care receive a service that is equipped to meet their needs. This study examines the differences between these two groups of patients. A sample of 253 community-based patients with a severe or enduring mental illness was divided into those with mental health service contact and those without. Differences in the demographic characteristics of the two groups were assessed and further, more detailed, comparisons were made with a sub-sample of 49 individuals randomly drawn from this larger sample. Instruments adopted for these purposes comprised the Camberwell Assessment of Need and the Life Fulfilment Scale. It was found that patients with a psychotic disorder were more likely than those with neurosis to be in contact with mental health services and patients with schizophrenia were significantly more likely to be on the active caseload of a community mental health nurse than those from all other diagnostic groups. However, patients' levels of need, unmet need and quality of life did not differ in relation to their service contact. Whilst the study provides limited evidence that community mental health nurses are targeting people with the most serious disorders, questions remain about the large proportion not receiving specialist care. Because primary care plays a significant role in the care of severely mentally ill people living in the community, the further mental health training of general practitioners and practice nurses is becoming increasingly important.

Patient held clinical information for people with psychotic illnesses

BACKGROUND

It is important to seek cost-effective methods of improving the care and outcome of those with serious mental illnesses. Patient-held records, where the person with the illness holds all or some personal information relating to the course and care of their illness, are now the norm in some clinical settings. Their value for those with serious mental illnesses is unknown.

OBJECTIVES

To evaluate the effects of personalised and accessible patient-held clinical information for people with a diagnosis of psychotic illness.

SEARCH STRATEGY

Electronic searches of AMED (1980-1998), Biological Abstracts (1985-1998), British Nursing Index (1994-1998), CAB (1973-1999), CINAHL (1982-1999), The Cochrane Controlled Trials Register (Issue 1, 1999), EMBASE (1980-1999), HEALTHSTAR (1990-1999), HMIC (King's Fund Database 1979-1998 & HELMIS 1984-1998), MEDLINE (1966-1999), PsycLIT (1887-1999), Royal College of Nursing Database (1985-1996), SIGLE (1990-1998), Sociological Abstracts (1963-1998) and the Internet (http://www. controlled-trials.com/) were undertaken. This was supplemented by personal contact with the Executive Board of the European Network for Mental Health Service Evaluation.

SELECTION CRITERIA

The inclusion criteria were that studies should: i. be randomised or quasi-randomised trials; ii. have involved adults with a diagnosis of a psychotic illness; and iii. compare any personalised and accessible clinical information held by the patient beyond standard care to standard information routinely held such as appointment cards and generic information on diagnosis, treatment or services available.

DATA COLLECTION AND ANALYSIS

Study selection and data extraction was reliability undertaken. Analysis was not possible.

MAIN RESULTS

Not one study met the inclusion criteria for the review. One study (Stafford 1997) was found on the use of client held records for people with long term mental illness but the participants had not been randomised. Two important randomised studies (Lester 1999, Papageorgiou 1999) are ongoing.

REVIEWER'S CONCLUSIONS

There is a gap in the evidence regarding patient-held, personalised, accessible clinical information for people with psychotic illnesses. It cannot be assumed that patient-held information is beneficial or cost-effective without evidence from well planned, conducted and reported randomised trials.