1. Volume 382, Issue 9907, Pages 1830-1844 (November 2013)
Associations between health and sexual lifestyles in Britain: findings from the third National Survey of Sexual Attitudes and Lifestyles (Natsal-3) 
Dr Nigel Field, MBPhD, Catherine H Mercer, PhD, Pam Sonnenberg, PhD, Clare Tanton, PhD, Soazig Clifton, BSc, Kirstin R Mitchell, PhD, Bob Erens, MA, Wendy Macdowall, MSc, Prof Frederick Wu, FRCP, Jessica Datta, MSc, Kyle G Jones, MSc, Amy Stevens, BSc, Philip Prah, MSc, Andrew J Copas, PhD, Andrew Phelps, BA, Prof Kaye Wellings, FRCOG, Prof Anne M Johnson, MD 
The Lancet 
Volume 382, Issue 9907, Pages (November 2013)
DOI: /S (13)
Copyright © 2013 Field et al. Open Access article distributed under the terms of CC BY Terms and Conditions

2. Figure
Reporting of sexual activity in past 4 weeks by sex and self-assessed general health status
Bars show 95% CIs. Sexual activity was defined as one or more occasion of vaginal, oral, or anal sex with a partner of the opposite sex, or oral or anal sex or genital contact with a partner of the same sex in the past 4 weeks.
The Lancet  , DOI: ( /S (13) )
Copyright © 2013 Field et al. Open Access article distributed under the terms of CC BY Terms and Conditions