Table 2 Search terms

Emergency department

1) Emergency Service, Hospital/

2) ((emergency or casualty) adj1 department).mp.

3) (accident adj2 emergency).mp.

4) 1 or 2 or 3

5) (frequen$ adj2 attend$).mp.

6) “high use$”.mp.

7) (hig$ adj (utiliz$ or utilis$)).mp.

8) “frequent flier”.mp.

9) (frequen$ adj3 use$).mp.

10) 5 or 6 or 7 or 8 or 9

11) 4 and 10

Primary care out-of-hours service

1) General Practice/

2) Primary Health Care/

3) “General Practi$”.mp.

4) “GP”.mp.

5) “primary care”.mp.

6) 1 or 2 or 3 or 4 or 5

7) (out adj2 hours).mp.

8) “out-of-hours”.mp.

9) “unscheduled”.mp.

10) 7 or 8 or 9

11) (frequen$ adj2 attend$).mp.

12) “high use$”.mp.

13) (hig$ adj (utiliz$ or utilis$)).mp.

14) “frequent flier”.mp.

15) (frequen$ adj3 use$).mp.

16) 11 or 12 or 13 or 14 or 15

17) 6 and 10 and 16