The survey found that married people have the most consistent sex, while sexual activity in young, single bachelors and bachelasses tends to be a little sporadic. Premarital sex was also looked at in the survey, though most statistics were pretty similar to a similar study conducted in the 70s, though men are now having sex earlier.
Men tend to over-report on sex while women under-report on their sex lives, according to the study, says head researcher at the London School of Hygiene and Tropical Medicine Kay Wellings.
STIs and unwanted pregnancies were lowest in the "developed world," despite having the most multiple sexual partners. Developed countries also have the greatest condom use, suggesting that countries struck by poverty seem to have far more sexual health related problems.
Fingers are pointed squarely at the US for sexual health problems too, since it withdrew funding from policies that don't focus on abstinence as a preventative.
You can find more details at New Scientist. ยต
As a contractor in NYC I find having sex with Married women is a lot easier then singles.

Married women are not into head games and by and large are great lovers.

Many times the hubby is working and the children are off to school and the stay at home lady is frisky