Unit for Social and Community Psychiatry, Queen Mary, University of London, UK
Central Institute for Mental Health, Mannheim, Germany
Department of Psychiatry, University of Lund, Sweden
Department for Social and Clinical Psychiatry, Psychiatric University Hospital, Zurich, Switzerland
Department of Psychiatry, University of Granada, Spain
Department for Social and Clinical Psychiatry, Psychiatric University Hospital, Zurich, Switzerland
Central Institute for Mental Health, Mannheim, Germany
Department of Psychiatry, University of Lund, Sweden
Department of Psychiatry, University of Granada, Spain
Department of Psychiatry, University of Groningen, The Netherlands
Unit for Social and Community Psychiatry, Queen Mary, University of London, UK
Correspondence: Dr Stefan Priebe, Unit for Social and Community Psychiatry, Queen Mary, University of London, Newham Centre for Mental Health, London E13 8SP, UK. Email: S.Priebe{at}qmul.ac.uk
Declaration of interest None. Funding detailed in Acknowledgements.
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Aims To test a new computer-mediated intervention structuring patient–clinician dialogue (DIALOG) focusing on patients quality of life and needs for care.
Method In a cluster randomised controlled trial, 134 keyworkers in six countries were allocated to DIALOG or treatment as usual; 507 people with schizophrenia or related disorders were included. Every 2 months for 1 year, clinicians asked patients to rate satisfaction with quality of life and treatment, and request additional or different support. Responses were fed back immediately in screen displays, compared with previous ratings and discussed. Primary outcome was subjective quality of life, and secondary outcomes were unmet needs and treatment satisfaction.
Results Of 507 patients, 56 were lost to follow-up and 451 were included in intention-to-treat analyses. Patients receiving the DIALOG intervention had better subjective quality of life, fewer unmet needs and higher treatment satisfaction after 12 months.
Conclusions Structuring patient–clinician dialogue to focus on patients views positively influenced quality of life, needs for care and treatment satisfaction.
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Settings
This study was conducted in community psychiatric services in Granada
(Spain), Groningen (The Netherlands), London (UK), Lund (Sweden), Mannheim
(Germany) and Zurich (Switzerland) covering urban and mixed urban–rural
areas. The number of participating teams per country varied between two (Lund)
and six (London).
All teams were multidisciplinary and provided comprehensive care programmes for people with severe and enduring mental illnesses. They operated a keyworker system in which every patient has a designated clinician working within a team but with lead responsibility for care coordination and delivery. Referrals were determined by residency in the catchment area and age (18–65 years).
Participants
Eligibility criteria for participating clinicians were a professional
qualification in mental health or a minimum of 1 years professional
experience in an out-patient setting, and an active case-load as keyworker.
The case-loads of participating clinicians were screened to identify suitable
patients meeting the following inclusion criteria: living in the community
(not 24 h supported accommodation) and treated as out-patients by community
psychiatric teams; at least 3 months of continuous care in the current
service; capable of giving informed consent; having sufficient knowledge of
the language of the host country; having a primary diagnosis of schizophrenia
or related psychotic disorder (ICD–10 F20–F29); aged between 18
and 65 years; having routinely at least one meeting with their keyworker every
2 months with the expectation that they would continue with the service for
the next 12 months; and having no severe organic psychiatric illness or
primary substance misuse. Patients were first informed about the study by
clinicians and then – if they agreed – approached by a researcher
for consent. The study was approved by relevant ethics committees in the six
countries, and written informed consent was obtained from all clinicians and
patients.
Design and process of randomisation
The intervention was evaluated using a cluster randomised controlled trial
design. Clinicians were randomly assigned to either the intervention or
treatment as usual, with a pre–post design over a 1-year period. Cluster
randomisation was used to avoid potential contamination between the
interventions in the two groups. Clinicians were randomised by
computer-generated random block number allocation sequence to ensure an equal
balance across sites. The randomisation procedure was completed separately for
each country and team. A researcher not involved in the study generated the
random allocation sequence. The process of allocating clinicians to the
treatment as usual or intervention groups was by numbered, sealed envelopes.
Masking of researchers to the allocation of the patients was attempted for the
duration of the study. As masking was expected to be difficult to maintain,
interviewers awareness of patients allocation was documented and
assessed at the end of the study. In four countries all eligible patients from
participating clinicians were asked to take part in the study. In the
remaining two countries where clinicians had considerably higher patient
case-loads, a maximum random sample of 12 patients was taken per
clinician.
Intervention
Clinicians in the control group continued with standard treatment with
their participating patients. Clinicians in the intervention group, in
addition to continuing with standard treatment with their participating
patients, also implemented the new manualised intervention. In the
intervention group clinicians used DIALOG, a computer-mediated procedure to
discuss 11 domains with their patients. They asked patients to rate their
satisfaction with eight life domains (mental health, physical health,
accommodation, job situation, leisure activities, friendships, relationship
with family/partner, personal safety) and three treatment domains (practical
help, psychological help and medication). Each satisfaction item was rated on
a rating scale of 1–7, from couldnt be worse to
couldnt be better, and followed by a question on whether
the patient wanted any additional or different help in the given domain. If
the patient answered yes, the type of the requested additional or different
support was recorded. The 11 domains were presented in a fixed order and an
explicit response was required for each item before proceeding to the next
item.
Patients answers to all questions were entered directly onto a hand-held computer or laptop using software specifically developed for the study over a 2-year period. Figure 1 illustrates possible screen displays, taking accommodation as an example (all of the other 10 domains can be displayed in the same way). A single domain could be viewed with the current rating compared with the rating 2 months previously. The domain could be viewed in the context of all the other domains in a summary graph comparing previous and current ratings for all 11 domains (end of Fig. 1). All 11 domains could also be viewed as a list in a summary table showing number of points change since the last meeting (e.g. +2, -3).
![]() View larger version (23K): [in a new window] [as a PowerPoint slide] |
Fig. 1 The DIALOG intervention. Example of questions and real-time feedback on the
domain accommodation.
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Each clinician in the intervention group was individually trained to use the software by a researcher and provided with written instructions. They were instructed on how the ratings should be used to facilitate a dialogue with the patients, particularly when there were changes since the last rating, explicit dissatisfaction with life domains or treatment aspects, or the patient wanted additional or different support.
Data collection
Collection of baseline data began in December 2002 and post-intervention
data collection ended in May 2005. At both time points clinicians and patients
were interviewed by researchers who had no involvement in the patients
care. Patients were interviewed either at the team office or at home,
according to their preference.
Outcomes
Outcome in the two groups was compared in a pre–post design. Primary
outcome was subjective quality of life (SQOL) at 12 months controlling for
baseline score. Quality of life was measured using the Manchester Short
Assessment of Quality of Life (MANSA;
Priebe et al, 1999)
whereby patients rate their satisfaction with life in general and different
life domains on Likert-type scales ranging from 1 (couldnt be worse) to
7 (couldnt be better), an approach that is consistent with the Quality
of Life Interview (Lehman,
1988). The mean score of all 12 satisfaction ratings is taken as
the indicator of SQOL.
Secondary outcomes were the number of unmet needs for care and satisfaction with treatment at 12 months, controlling in each case for the baseline score. Need for care was measured on the Camberwell Assessment of Need Short Appraisal Schedule, patient-rated version (CANSAS; Slade et al, 1996) which assesses health and social needs across 22 domains. For each domain it distinguishes between no need (rating of 0), met need (rating of 1) and unmet need (rating of 2). Patients satisfaction with treatment was assessed on the Client Satisfaction Questionnaire (CSQ–8; Nguyen et al, 1983), which consists of eight items rated from 1 to 4 (with higher scores indicating greater treatment satisfaction).
Interviewers assessed patients symptoms on the 30-item Positive and Negative Syndrome Scale (PANSS; Kay et al, 1987). The scale assesses positive, negative and general symptoms and is rated on a scale of 1–7 (with higher scores indicating more severe symptoms). Socio-demographic and clinical characteristics of patients were obtained at baseline. Psychiatric diagnosis was obtained through a standardised and computer-based method using operationalised criteria (OPCRIT; McGuffin et al, 1991). Researchers received training in all rating procedures and achieved good interrater reliability using videotaped interviews for PANSS (Cohens kappa 0.71) and case vignettes for CANSAS (0.90).
Statistical analysis
R version 2.2.0 (Ihaka & Gentleman,
1996) was used to compare the intervention and control groups in
an intention-to-treat analysis. Descriptive statistics are presented, with
frequency and percentage distributions for categorical data and means and
standard deviations for continuous data.
In the main analyses patients were excluded only if they gave no information at follow-up. A sensitivity analysis using multiple imputation was also carried out to check the effect of excluding these patients. Each outcome was analysed using a mixed-effects model with baseline score for that variable, treatment allocation and length of follow-up as fixed effects, and centre and keyworker as random effects. Length of follow-up was considered as a potentially confounding covariate that might have introduced post-randomisation variance, and centre and keyworker were included in the model to adjust for the effect of clustering. Results are presented as 95% confidence intervals. Assumptions were checked graphically. Effects in the linear mixed-effects model are reported as partial eta squared, which is the proportion of total variability attributable to a factor.
Sample size
We aimed to obtain complete data for 240 patients in each group. With a
significance level of
=0.05, this sample size would allow the detection
of an effect size of 0.2 with 59% power, and of an effect size of 0.5 with
more than 99% power.
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At 12 months, 451 patients (243 intervention, 208 treatment as usual) were re-interviewed (88.9% follow-up). There were 17 keyworker changes during the study, with only one replacement clinician not agreeing to participate. Patient flow during the trial is shown in Fig. 2.
![]() View larger version (25K): [in a new window] [as a PowerPoint slide] |
Fig. 2 Trial CONSORT diagram.1 In two centres a maximum random sample
of 12 patients was taken per clinician owing to a high patient case-load.
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The mean number of meetings with structured communication in the intervention group was 5.21. Four patients had no such meeting, 12 patients had one, 14 had two, 15 had three, 40 had four, 45 had five, 46 six, and 95 had seven meetings. The time of all meetings between keyworkers and patients was documented over a 2-month period (i.e. months 6 and 7 of the 12-month study period), and the total time spent by keyworkers and patients in meetings with each other showed no significant difference between the two groups (intervention group, mean 240, s.d.= 201.9 min; control group, mean 251, s.d.=199.2 min).
An intention-to-treat analysis was conducted with the analysis set including all patients with at least one post-randomisation observation.
Baseline characteristics of participants
The characteristics, both socio-demographic and clinical, of clinicians and
patients are shown in Table 1.
There were no significant differences in the characteristics of participants
in the control and intervention groups.
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View this table: [in a new window] | Table 1 Baseline characteristics of clinicians and patients |
Outcomes
Outcomes are summarised in Table
2. At 12-month follow-up patients in the intervention group had
significantly higher SQOL scores, fewer unmet needs and higher treatment
satisfaction compared with patients in the control group. The effect sizes
based on adjusted means and standard deviations for the three outcomes vary
between 0.20 and 0.27.
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View this table: [in a new window] | Table 2 Differences in quality of life, treatment satisfaction and unmet needs between groups at 12-month follow-up |
Owing to the floor effect for unmet needs and ceiling effect for quality of life, a substantial improvement was unlikely to be achieved in those patients who already had a positive SQOL and few unmet needs at the beginning of the trial. We therefore conducted a post hoc analysis on the group as a whole, with those patients who at baseline had at least two unmet needs and a SQOL score lower than 5 (i.e. mixed or lower). In those 195 patients (106 in the intervention and 89 in the control group), the effect size in relation to SQOL was 0.43 (adjusted mean difference 0.33, P=0.006) and in relation to unmet needs was 0.52 (adjusted mean difference 1.16, P=0.003). As a sensitivity analysis we fitted the same models imputing the missing outcomes using regression, using five sets of imputations. The resulting effect sizes were almost unchanged. The two groups showed no statistically significant difference in any of the psychopathology scores on the PANSS.
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This intervention ensured that 11 life and treatment domains were consistently addressed and patients views and priorities were always considered (Rosenheck et al, 2005). This is likely to have increased awareness of patients views and their changes over time, resulting in care that reduces unmet needs and increases SQOL and treatment satisfaction (Lasalvia et al, 2005). This was achieved although symptom levels did not change. Given the enduring nature of the disorders in our sample, this was as expected and suggests that patients quality of life can be improved even when symptoms do not show significant change (Holloway & Carson, 1998; Trieman et al, 1999).
Limitations and strengths
The study should be considered in the light of its limitations.
Participating teams and clinicians might not have been representative of the
given mental healthcare systems. The novel intervention was not consistently
administered, as evidenced by the variation in the number of structured
communications for individual patients (although with a mean of approximately
5 per patient), which reflects the pragmatic nature of the trial. Finally,
masking of interviewers could not be maintained for the majority of patients,
and exclusively subjective measures were used as outcome criteria.
The strengths of the study are that the intervention was tested under routine conditions and in six European healthcare settings, with high follow-up rates of 90% in this often difficult to reach and mobile population. The intervention requires little additional investment and minimal training of clinicians. It did not significantly increase the time spent by keyworkers and patients in meetings with each other, and was viewed favourably by both patients and keyworkers (see online supplement to this paper). It can be applied without reconfiguration of services and would be easy to implement widely. We found a positive effect in a sample with predominantly long-term problems – the mean length of illness was more than 15 years – and the scope to achieve substantial improvements of SQOL in such samples over a 1-year period is usually regarded as somewhat limited.
Intervening in patient–clinician communication
So far, there is a paucity of evidence-based interventions that can be used
in routine meetings between clinicians and people with schizophrenia to
enhance quality of life (Marshall et
al, 2004; Slade et
al, 2006). The intervention tested in this study targets
patient–clinician communication as the central component of care
delivery and structures it in a patient-centred manner. There is evidence that
the quality of patient–clinician communication plays a role in treatment
outcome. In primary care consultations, a positive patient-centred approach
was associated with higher patient satisfaction, less symptom burden and fewer
referrals to other services (Little et
al, 2001). In mental healthcare, a simple communication
checklist completed by patients before seeing their doctor, where they
indicated which of 20 common needs they wanted to discuss, led to improved
patient–doctor communication and changes in treatment
(Van Os et al,
2004).
The use of computers was also found to facilitate communication between clinicians and people with schizophrenia. Specifically, patients responses to structured questions concerning treatment goals and expectations were visually presented and reviewed on a computer screen. This improved discussion of treatment and the identification of realistic goals for therapy (Ahmed & Boisvert, 2006). The authors proposed that using both visual and auditory techniques may facilitate communication by improving patient attention, information assimilation and reducing interference from psychiatric symptoms such as delusions.
The current intervention is simple, nonintrusive and inexpensive. Although the effect sizes in this study were small, they may be judged significant for the practice of community psychiatry, and the findings should justify wider use of the intervention. It is worth noting that effect sizes were higher in those patients who had more unmet needs and lower quality of life at baseline, which is in line with the results of Van Os et al (2004). In these patients medium effect sizes of 0.43 and 0.52 were achieved through the DIALOG intervention. These do not indicate a dramatic change in the living situation of patients on a group level but suggest a real difference for at least some of the patients. It remains unclear to what extent this effect is due to: (a) the mere structuring of the meeting which ensures that important areas are always covered; (b) the focus on patient views of outcome in the meeting; and (c) the specific computer-mediated option of comparing current ratings with previous ratings across different life domains.
If used in routine settings the intervention might facilitate the generation of regular outcome data. As the procedure involves the assessment of central outcome criteria in community psychiatry (i.e. satisfaction with life domains and with treatment), these scores may feed into processes of quality management and service evaluation (McCabe & Priebe, 2002; Priebe et al, 2002). Gathering outcome data from a procedure that is meaningful to patients and clinicians and beneficial for the individual patient is more likely to be successful than conventional methods of routine outcome measurement in which outcomes are rated by patients outside clinical consultations and the results later made available to clinicians (Gilbody et al, 2001; Slade et al, 2006). The latter approach makes it difficult to determine whether the process of outcomes management had an impact on what clinicians and patients did in clinical consultations. Incorporating the assessment and feedback of outcomes into routine clinical encounters makes it more likely to have a direct impact on what happens in practice when clinicians and patients interact.
In conclusion, a simple computer-mediated procedure to structure routine communication between patient and clinician can have a significant positive effect on treatment outcome over a 1-year period in patients with schizophrenia in the community. Future studies should test the feasibility and effectiveness of similar procedures for improving patient–clinician communication with other patient groups and in other out-patient settings. Moreover, qualitative and experimental research might help to develop interventions that are more effective than DIALOG in influencing both the therapeutic communication and outcome, and identify the mediating processes between better communication and more favourable outcome.
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