Among the over-30s, 41.09 % had had one-night stands, while 58.91 % had not; of those who had, 61.22 % had used condoms, 28.06 % had not used condoms, and 10.71 %, had occasionally used them.
三十歲以上有過一夜情性經驗者佔百分之四十一．○九；沒有過一夜情經驗者為百分之五十八．九一。三十歲以上有過一夜情並同時使用保險套者佔百分之六十一．二二；沒有使用保險套者為百分之二十八．○六；偶而使用者佔百分之十．七一。