There are a number of problems for evidence-based practice (EBP) including limited generalizability of efficacy research results, the consequent lack of confidence in the relevance of such research, and the conceptual distance of most practitioners from the research process. The result is that EBP, although sound in principle, often fails to achieve its aim of improving practice. Practice-based evidence (PBE) provides a complementary bridge for the gap between research and practice to offset some of these problems, promoting collaboration between mental health services and academic institutions. This paper presents the initial results of such a collaboration via three phases: (1) the development of a referential database for primary care counselling services, (2) 'practitioner-friendly' feedback on grouped data to services, and (3) the combination of the two to build an evidence base for work with ethnic minorities-an area in which research trials are not well adapted to provide much evidence. Clin. Psychol. Psychother. 10, 374-388 (2003) evidence. However, many of the constituent components of this paradigm have been criticized, including the philosophical and political assumptions underpinning EBP (e.g. Colyer & Kamath, 1999), the randomized controlled trial (e.g. Marshall, 2002), the limitations to the paradigm (e.g. Trinder, 2000) and user concerns (e.g. Faulkner & Thomas, 2002). One specific constraint is that strict study inclusion criteria restrict the data available for analysis and thus limit the conclusions which can be drawn and constrain the generalizability of findings. While there is considerable evidence supporting the efficacy of the psychological therapies (e.g. Lambert & Ogles, 2003;Roth and Fonagy, 1996), there is still relatively little evidence for specific age groups, ethnic minorities, or large service areas, such as primary care. Data sufficient for precise estimation of effects for small subpopulations requires the availability of much larger datasets than those which will accumulate through prioritized RCTs and traditional research-driven studies.
Benchmarking Primary Care Counselling via Practice-Based EvidenceAnother more general problem for the 'pure' EBP paradigm is that practitioners need skills and confidence to use the model. In the psychological therapies, the considerable real challenges to the generalizability of RCT evidence give many practitioners serious doubts about, and poor confidence in, the applicability of EBP evidence to their own practice. A more prosaic problem is that unfamiliarity with quantitative data per se and with the measures reported, distances some practitioners from the paradigm. Critical appraisal and EBP trainings, while vital, can give practitioners skills but no data to address their local issues.A complementary paradigm to EBP which addresses many of these concerns is that of practice-based evidence (PBE: Barkham & MellorClark, 2000;Margison et al., 2000). This paradigm uses an evidence-base derived from routine practice settings rather than from...