Table 1 Search strategy for MEDLINE

1.

(microcost$ or micro-cost$).mp.

2.

bottom-up.mp.

3.

“costs and cost analysis”/or health care costs/or health expenditures/

4.

2 and 3

5.

(bottom-up adj5 cost$).mp.

6.

(bottom-up adj5 accounting).mp.

7.

(activity-based adj5 accounting).mp.

8.

(activity-based adj5 cost$).mp.

9.

1 or 4 or 5 or 6 or 7 or 8

10.

limit 9 to english language

11.

limit 10 to journal article