@ERSpublications Self-management is not a time-limited intervention but on-going support to help a person live with their condition(s) http://ow.ly/10luZqRespiratory specialists familiar with the success of supported self-management in asthma [1] may be excused for feeling disappointed by the evolution of evidence in chronic obstructive pulmonary disease (COPD). The promise of early studies [2][3][4] was seemingly dashed by a series of negative trials [5,6] and a trial was even terminated early for fear of a detrimental effect [7]. The most recent Cochrane review, however, concludes that interventions to support self-management reduce respiratory-related and all-cause admissions, reduce dyspnoea and improve quality of life [8]. The interventions in the included studies were heterogeneous and complex; and it was not possible to identify the individual components of supported self-management responsible for effective outcomes. A wider review of trial-level data was also unable to identify the most important components [9]. The study by JONKMAN et al. [10] in this issue of the European Respiratory Journal, which explores the characteristics of effective self-management interventions in an individual patient data meta-analysis, is therefore a useful contribution to the literature.
Difficulty identifying early exacerbationsIn retrospect, the clues that self-management in COPD would be more challenging than in asthma were already available. From the health service perspective, one of the main goals of self-management is to enable patients to recognise that their condition is deteriorating and take timely, appropriate action that can prevent further development of an exacerbation and reduce the risk of an admission. However, qualitative studies in people with COPD highlight the difficulty people have in distinguishing "bad days" from the onset of an exacerbation, observing that it is "only afterwards that you know you are not well" [11]. When asked about the symptoms that indicate an exacerbation, many patients describe nebulous symptoms of "just feeling rough" [12], an observation that will resonate with any general practitioner who has been asked to visit a COPD patient in the throes of an exacerbation whose complaint is no more specific than "unwell". Analysis of telemonitoring data suggests that it is the minority of patients who can log discrete episodes of increased breathlessness, cough and purulent sputum [13]. Most experience a rolling pattern of on-going symptoms with little clarity on when treatment is appropriate. This difficulty in distinguishing the onset of an exacerbation may be one reason for the negative findings of BUCKNELL et al. [6] in their trial of self-management. They observed that only 42% of participants were "successful self-managers" and, in a post hoc analysis, showed that the intervention was effective in this sub-group. CALVERLEY et al. [14] predicted this difficulty a decade ago from analysis of diary cards from trial participants. Despite an increase in mean symptom scores, on an indi...