In the 18-30 age bracket, 31.86 % had had one-night stands, and 68.14 % had not; of the former, 52.11 % had used condoms, 32.95 % had not, and 14.92 % occasionally used them.
十八到三十歲有過一夜情性經驗者佔百分之三十一．八六；沒有過一夜情性經驗者為百分之六十八．一四。十八到三十歲有過一夜情性經驗並同時使用保險套者佔百分之五十二．一一；沒有使用保險套者為百分之三十二．九五；偶而使用者是百分之十四．九二。