S1 Data -

The healthcare sector in South Africa has seen a rise in medical errors and negligence adversely affecting healthcare delivery. This study aimed to determine the nature and magnitude of Patient Safety Incidents at a tertiary hospital between April 2018 to March 2021 (the COVID-19 era). A retrospective review of Patient Safety Incidents forms and clinical records of inpatients above 12 years with a reported incident were included. The overall incidence of patient safety incidents was 4.40 PSIs per 10 000 patient-days. The majority of PSIs were harmful incidents (An incident that results in harm to a patient that is related to medical management, in contrast to disease complications or underlying disease) at 72.50% [145/200], followed by no harm incidents at 18.00% [36/200] and 9.50% [19/200] near-miss incidents. The five highest incident types were clinical process/procedure [83/200; 41.50%], behaviour [49/200; 24.50%], falls [28/200; 14%], complications [20/200; 10%], and pressure sores [11/200; 5.50%]. Incidents occurred more frequently within the week (83.50%) and during day shift (67.50%). Overall, the study showed low PSI reporting rates which is an inherent challenge with voluntary reporting. Notably, there has been an increasing trend in reporting. The results reflect a reporting culture more inclined to bring awareness to incidents that have negative outcomes.