All students who were eligible to take part in the P-ATS were invited to fill out the post-P-ATS evaluation survey using Jisc Online Surveys (see Supplementary File S2). The survey contained a mixture of closed and open-ended free-text questions exploring participants’ reasons for participating in the P-ATS (or not), experiences and engagement with the testing, perceived barriers and benefits of the programme and suggestions for improvement. Items explored students’ experiences of self-isolation and social distancing, COVID-19 risk perceptions and anxiety measured by the Generalized Anxiety Disorder scale (GAD-7) [10]. Generalized anxiety disorder (GAD) is one of the most common mental disorders, and the GAD-7 has demonstrated strong psychometric properties in population-based samples [10,11]. The measure has a range of 0 to 21, and a score of 10 or greater on the GAD-7 represents a reasonable cut point for identifying cases of GAD, with high sensitivity (89%) and specificity (82%) [10].