"Whilst it is encouraging that analogies from other industries with longstanding cultures of safety and reliability may be extrapolated, it is also important to recognize the unique demands of health care. One crucial difference that emerged was that Formula 1 and aviation both have a relatively stable workforce, with minimal staff turnover. For example, out of about 20 members of a pit team, only one or two members change annually. In contrast, turnover of staff in health care is far higher, with six residents rotating every 3 months in the study unit, and a nurse turnover of approximately 10%."