Numbers (N) of children Age (years)   <2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 N/year of age overall 117 (100%) 8 9 8 6 6 12 11 6 7 9 9 7 5 4 6 4 N/year of age unable to choose 22 (19%) 8 8 6 1 0 0 1 0 0 0 0 0 0 0 0 0 N/year of age able to choose 95 (79%) 0 1 2 5 6 12 10 6 7 9 9* 7 5 4* 6 4 N/year of age with parent input 14 (12%) 0 3 1 1 1 0 3 0 2 1 1 0 0 0 0 0 * = one child per age group mentally disadvantaged. N/year=number per year of age

Table 3: Demographics 3. Numbers of children per year of age able and unable to choose between intravenous and inhaled induction of anaesthesia, and numbers of parents contributing to the decision.