'I was uncertain, but I was acting on it': A longitudinal qualitative study of medical students' responses to uncertainty.

Purpose: Uncertainty is ubiquitous within medical practice. Accordingly, how individuals respond to uncertainty, termed uncertainty tolerance (UT), is increasingly considered a medical graduate competency. Despite this, aspects of the UT construct are debated, which may relate to research focused on measuring UT, rather than understanding students' experiences. Therefore, we asked (1) how do medical students describe their responses to uncertainty, (2) how (if at all) do described responses change over time and (3) how do described responses contribute to understanding the UT construct.

Methods: Engaging an interpretivist worldview, we conducted a longitudinal qualitative study throughout 2020 with 41 clinical medical students at an Australian medical school. Participants completed reflective diary entries across six in-semester time-points (n = 41, 40, 39, 38, 37 and 35) and semi-structured interviews at the end of both semesters (n = 20 per semester). We analysed data using framework analysis.

Results: Although participants communicated accepting health care uncertainties, described cognitive appraisals of uncertainty ranged from threatening (e.g. challenging credibility) to opportunistic (e.g. for learning and growth). Emotions in response to uncertainty were predominately described in negative terms, including worry and anxiety. Participants described a range of maladaptive and adaptive behavioural responses, including avoiding versus actively engaging with uncertainty. Despite describing typically negative emotions across time, participants' cognitive and behavioural response descriptions shifted from self-doubt and avoidance, towards acceptance of, and engagement despite uncertainty.

Conclusions: Students' descriptions of responses to uncertainty suggest existing UT conceptualisations may not holistically reflect medical students' experiences of what it means to be uncertainty 'tolerant', especially pertaining to conceptualisations of 'tolerance' centred on emotions (e.g. stress) rather than how uncertainty is ultimately managed. Extending from this study, the field could consider redefining characteristics of uncertainty 'tolerance' to focus on adaptive cognitive and behavioural responses, rather than emotional responses as key indicators of 'tolerance'.