Discussion
This study had global involvement of pwCF, their families and HCPs and through the use of a web-based survey collected their views on which motivation strategies, support networks and technologies help people with cystic fibrosis improve and sustain adherence to treatment. The current study confirms our previous work which showed that treatment burden in CF is high and patients, their families and HCPs recognise this as a barrier to adherence.5 Patients described the relentlessness of the condition and identified that additional competing demands, such as from school and work, were barriers to adherence. Related themes were having no time (including time for preparation and cleaning of equipment) and tiredness. The high associated treatment burden in CF has been well described, with treatments typically taking two to two and a half hours to complete,4 5 needing adaptation and adjustment as the nature of the condition changes.
In this study and in our previous work we highlight that the most burdensome treatments identified by patients were the most likely to be omitted.5 However, other research has suggested that there is not always a clear relationship between objective treatment burden and adherence. This was demonstrated by Ball et al who found that teenagers with CF were most adherent to treatment during school-term weekdays, despite this being a time when there were many competing demands.14 Thus, the authors concluded there was value in integrating treatments into a daily routine.
Routine has been shown to be advantageous in adherence in CF. Hoo et al15 found that patients with higher levels of adherence had the highest habit scores, lower median intravenous antibiotic days and a trend towards higher forced expiratory volume in one second compared with those with low adherence. Habit formation is advantageous as it reduces the need for conscious effort. Within our study both groups recognised the importance of having a routine and acknowledged that adherence was reduced when routine was disrupted.
In this study treatment burden is frequently given by participants as a reason for non-adherence. However, it is also possible that some respondents may have been reluctant to give a full explanation for their reasons for non-adherence. Drabble et al16 demonstrated that for patients who gave ‘forgot’ as a reason for non-adherence the underlying reasons for forgetting differed between high and low adherers. With regard to treatment burden, this may be a more acceptable rationalisation for some pwCF to disclose than the underlying reason for their non-adherence. We hope that through the anonymity of the survey this was minimised. In addition, perception of treatment burden can be influenced by coping strategies used. Work in type 1 diabetes17 found that patients with a maladaptive coping style to treatments (ie, avoidant coping) had greater levels of diabetes-specific distress. This resulted in amplifying the perception of their treatment burden followed by a deterioration in their self-management and glycaemic control. This may also be relevant for some pwCF with a similar coping style, thus amplifying an already significant treatment burden. Furthermore, where ‘burden’ is given as an explanation of suboptimal adherence, a behavioural change approach might interpret this as indicating the challenge faced by pwCF in establishing a sustainable routine in the face of a complex system.18
Our study found that CF education was valued and patients recognised the importance of being well informed, helping them to stay motivated when the immediate benefits were not seen. However, it was felt that education did not always relieve treatment burden. Education to improve self-management and adherence is used in a number of chronic conditions, with a number of self-management education strategies used in CF since the 1990s.19 Evidence of self-management education in CF however is still poor. A Cochrane review19 found that there was insufficient quantity or quality of evidence based on current trials to draw any firm conclusions around its role in CF, with further trials needed. It did acknowledge that there was some limited evidence that improved knowledge may result in a positive change to a small number of behaviours in CF.
The use of digital technology is a rapidly growing area within healthcare and its importance recognised by the WHO.8 Its use in CF has increased over the last 20 years yet there is currently limited evidence of its efficacy in improving long-term adherence in CF.20 This study has highlighted that although technology is being used by a group within the CF community to aid treatment management; it is promoted more by HCPs than used in practice by the majority of pwCF at present.21 In addition, the types of technologies preferred by pwCF can be different to what is recommended by their HCPs. In particular the use of Apps provided interesting data. Although closed text responses reported relatively low use of Apps, thematic analysis provided more of an insight into their use than was captured by the closed question alone. Apps was the most frequently used word in relation to types of technologies used, with its use mainly linked to providing reminders. In addition, CF-specific Apps capable of combining multiple aspects of care was identified as an area of research interest. Studies such as MyCyFapp22 for patients with CF-related pancreatic insufficiency goes some way to addressing this research area. Its App has multiple functions including allowing the user to calculate their optimal PERT dosing, complete symptom scoring and providing nutritional education. However, to our knowledge, there is no CF-specific App supported by trial data which allows patients to self-manage all aspects of their CF care in one place. Home monitoring, trials involving physiotherapy and virtual clinics were also identified, although these have previously been used in trials in CF.20
Ongoing studies including CFHealthHub12 and Project Fizzyo13 aim to address adherence in CF through the use of digital technology. Project Fizzyo combines the use of Fitbit exercise trackers with chipped airway clearance devices with feedback given on technique via an App. Computer games were also developed to be used at different intervals within the study to assess their impact on adherence. Their aim is to improve the quality of airway clearance and reduce treatment burden by making physiotherapy more enjoyable. CFHealthHub collects data through data tracking nebulisers, accessible to both clinicians and pwCF to provide an objective measure of adherence. This, if handled sensitively, aims to enable clinicians to support patients more appropriately and improve adherence. Additional online supportive tools such as education, problem-solving and goal setting are available for patients.
The patient’s view is paramount in guiding future research and a strength of this study was that it addressed an area considered a priority by the CF community. Perspectives of both the patient and clinical CF community were sought to give a deeper understanding of the issues affecting adherence. We had global reach with a large number of responses with an almost equal split between the HCP and patient community. Thematic analysis was beneficial as it allowed for a more in-depth analysis of this research question. Third, public and patient involvement was maintained throughout the study and were part of the steering group as well as through manuscript preparation. In addition, the survey was anonymous which may have encouraged openness and honesty in the participants’ responses.
We have identified several limitations to this study. First, we acknowledge that self-reporting of adherence is subject to both recall and social desirability bias. Also, the demographics and opinions of people who did not take part are unknown. This may be of particular relevance as the surveys were largely promoted on digital platforms. Groups which either chose not to use these platforms or do not have access may not share the same views as those who chose to engage in the survey, especially in relation to the use of digital technologies. However, due to the relatively young demographic of pwCF this group is more likely to be familiar with using these platforms in their everyday lives. In addition, although a structured approach was taken for data analysis the nature of the data means that the data will always require a degree of subjective interpretation. Finally, the majority of respondents were from the UK where healthcare is universal and free at the point of use. However, we feel though that the results are still generalisable to all countries where digital technologies are accessible.