Factors influencing pre-hospital decisions not to convey: a mixed methods study

Abstract

This study has used a mixed methodology to explore the impact of geographic, temporal and ambulance crew skill factors on ambulance clinicians’ decisions to leave a patient on scene after attending a 999 call. Four phases of work were undertaken using both qualitative and quantitative methods to build an understanding of the complex nature of pre-hospital clinical reasoning. A novel scale, the DMASC survey was developed, which indicated four factors influence decision-making in this context. More experienced staff scored significantly differently to other staff groups on the ‘Experience’ and ‘Patient characteristic’ subscales of the tool. Qualitative work explored these findings in more detail and five inter-related themes were identified, namely, ‘Communication’, ‘The three ‘E’s’, education, experience and exposure’, ‘System influences’, ‘Professionalism’ and ‘Patient characteristics’. The final phase of the study undertook to analyse retrospective call data from one large ambulance service over a one-year period. All of the five predictor variables, rurality, time of day, day of the week, patient condition and crew skill level, influenced the likelihood of conveyance. Of these the level of clinical skill of the first crew at scene was independently significant. The results of this work are discussed in relation to the strategic and operational context of NHS ambulance services. The thesis is structured as a series of papers yet to be submitted for publication. Although this confers a degree of repetition, it provides a logical analysis of the methods used to explore factors that may influence paramedic’s clinical decision making when deciding to leave patients at home following a 999-call attendance.