Factors influencing multiple non-utilized healthcare appointments from patients’ and healthcare providers’ perspectives: a qualitative systematic review of the global literature

The term 'non-utilised appointments' emerged in 2019 but lacks a clear definition. We focus on multiple non-utilised appointments owing to recent advances in understanding 'missingness' in UK health care. Studies on missed appointments show conflicting results regarding interventions such as text messaging owing to oversight of occasional versus repeated missed appointments. Understanding patient and healthcare-related factors in multiple non-utilised appointments is crucial for improving interventions and patient engagement.