If you were to sum up the results of the third National Survey of Sexual Attitudes and Lifestyles (Natsal), it would go something like this: gay marriage is fine, cheating is bad and sexual behaviours can be hindered by bad health.

Natsal infographic – number of partners
(Credit: http://www.natsal.ac.uk/)

You could also explain the results much more eloquently, as did Professor Dame Anne Johnson (UCL Infection & Population Health) in her Lunch Hour Lecture, ‘Studying sex comes of age.’

Statistics are tricky. In theory, they should confirm what we already know empirically, but often they still manage to surprise. In this regard, I found Professor Johnson’s talk a mixed bag of expectations met and surpassed. (more…)