Condom slippage and breakage rates.

A prospective study using two brands of condoms found that of 405 condoms used for intercourse, 7.9% either broke during intercourse or withdrawal or slipped off during intercourse; none of these events were related to condom brand, past condom use or use of additional lubricant. Of the remaining condoms, 7.2% slipped off during withdrawal; slippage was not related to condom brand or past use of condoms, but it was significantly higher when additional lubricant was used.