Screening programmes are often judged by whether an invitation was sent and an appointment was available. Yet a functioning programme can still miss the people who stand to benefit most. A new WHO/Europe policy brief on cancer screening uptake argues that participation is shaped by far more than information: fear, stigma, trust, cultural context, practical constraints and the way healthcare services are organised all influence whether people act on an invitation.
The message is timely for health systems investing in data-driven prevention. Better risk stratification, digital reminders and accessible booking can improve the infrastructure around screening. But technology does not remove the reasons why someone may postpone, avoid or distrust an examination. If those reasons are not understood, digital services can make an already effective programme more convenient for people who are likely to participate anyway, while leaving inequalities unchanged.
The barrier is rarely a lack of information
WHO/Europe identifies several barriers to participation, including low awareness, fear, stigma and physical or social limitations. Its review points to approaches that combine clear communication with targeted education, community and social support, simplified procedures, cultural sensitivity and removal of logistical or financial obstacles. The important word is combine. A single message or digital tool is rarely enough when barriers overlap.
That is a behavioural insight with direct consequences for implementation. An SMS reminder may help when the barrier is forgetting. It may not help when a person is worried about the procedure, cannot take time away from work, lacks transport, has had a poor earlier experience with care or does not trust the institution sending the message. Treating all non-participation as a communication problem leads to predictable gaps in reach.
Design services around the decision people have to make
Behavioural change is sometimes reduced to a question of persuading individuals. The WHO brief offers a more useful perspective: health systems can change the environment in which a decision is made. That includes the language of an invitation, the number of steps needed to book, the availability of local support, the privacy of the process and whether participation is realistic within daily life.
For healthcare organisations, this means that participation data should prompt questions rather than just produce dashboards. Which groups are absent? Where in the pathway do people disengage? Is the issue access, understanding, trust or previous experience? And are patients and communities involved in designing a response? These questions require data, but they also require listening and local partnership.
A digital programme still needs a human pathway
The policy brief does not suggest that every intervention works everywhere. It stresses evaluation for effectiveness and sustainability. That is particularly important when systems use behavioural approaches at scale. A well-intentioned campaign can be ineffective, can create pressure without support or can widen an existing gap if it reaches only the most digitally confident people.
The broader lesson applies beyond cancer screening. Whether the goal is vaccination, medication adherence, lifestyle support, shared decision-making or adoption of digital care, the question is not only whether a solution is available. It is whether people can and want to use it in the circumstances of their own lives. Care transformation therefore needs behavioural science alongside technology, policy and clinical evidence.
Behavioural change is a cross-cutting theme at the annual ICT&health World Conference 2027. The programme connects prevention and patient participation with adoption by professionals, teams and healthcare leaders.
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