「最淫亂國家」調查出爐!台灣排名後段班 冠軍跌破眼鏡It would be worth investigating how they got the data. How they select samples and how they ask questions etc.
For me, it might be a better way to estimate to
1. Find base rate of STD
2. Find STD spread rate
3. Protected sex rate
And then calculate sex partner number from above data by comparing adjusted spread rate.