Table 1

 Proportion reporting new sexual partner(s) while overseas in the past 5 years, and the number of new sexual partner(s) acquired while overseas, by gender

MenWomen
Natsal 2000 used the following definition of a “sexual partner” “people who have had sex together—whether just once, or a few times, or as regular partners, or as married partners,” and “sex” was defined as “this includes vaginal, oral and anal sexual intercourse”. Respondents read these terms and definitions at the start of the computer-assisted self-interview .
*Weighted, unweighted denominator defined as respondents who reported being resident in Britain for at least 5 years before interview for Natsal 2000, and who reported at least one sexual partner in the past 5 years.
†Weighted, unweighted denominator defined as respondents who reported being resident in Britain for at least five years before interview for Natsal 2000, and who reported at least one sexual partner in the past 5 years, and who reported new sex partner(s) while overseas.
% (95% CI) reporting new sexual partner(s) while overseas in the past 5 years
    1+ new partner(s) while overseas13.9 (12.8 to 15.1)7.1 (6.4 to 8.0)
    2+ new partner(s) while overseas7.7 (6.8 to 8.6)2.4 (2.0 to 2.8)
    5+ new partner(s) while overseas2.5 (2.0 to 3.0)0.5 (0.3 to 0.8)
    Denominator*5419, 44305304, 6057
Number of new sexual partners while overseas
    Mean (SD)3.6 (13.2)1.9 (4.9)
    Median (range)2 (1–300)1 (1–100)
    5th, 95th centiles1, 131, 5
    Denominator†754, 725378, 464