Ciszewski R L, Harvey P D
Population Services International, Washington, DC.
J Biosoc Sci. 1994 Jan;26(1):25-35. doi: 10.1017/s0021932000021039.
In April 1990, the prices of five brands of contraceptives in the Bangladesh social marketing project were increased, by an average of 60%. The impact on condom sales was immediate and severe, with sales for the following 12 months dropping by 46% from the average during the preceding 12 months. The effect on oral contraceptive sales was less dramatic: average sales in the year following the increases dropped slightly despite a previously established pattern of rapidly rising sales. There appears no reasonable combination of events other than the price increase itself to explain most of the difference.
