To investigate the effect of survey design, specifically the number of items and recall period, on estimates of household out-of-pocket and catastrophic expenditure on health.

The shares have lost 5.8 percent since the April 30 children’s medicine recall, compared with a decline of 4.4 percent in that period for the Standard & Poor’s 500 Pharmaceuticals Index.

Whilereading this essay, the readership readers are asked to recall thenature of the period during which Brooks wrote his manuscript.