Catherine R H Aicken

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Having multiple sexual partners concurrently increases the risk of transmission of a sexually transmitted infection. Even if partnerships do not overlap, transmission potential exists when the gap between partnerships is shorter than the remaining infectious period. In the present article, we quantify the gap between partners to assess transmission(More)
BACKGROUND Evidence for relationships between alcohol misuse, sexual risk behaviour and adverse sexual health outcomes exists from both population-level data and studies undertaken in specific groups. We examine changes in these associations using representative data from two consecutive surveys. METHODS Probability surveys conducted in 1990/91 and again(More)
Patterns of sexual partnership formation and dissolution are key drivers of sexually transmitted infection transmission. Sexual behavior survey participants may be unable or unwilling to report accurate details about their sexual partners, limiting the potential to capture information on sexual mixing and timing of partnerships. We examined how questions(More)
OBJECTIVES Evidence is mixed as to whether meeting sexual partners online ('internet-partners') is associated with risky sexual behaviour and/or sexually transmitted infection transmission. Accordingly, we sought to estimate the prevalence of reporting various online romantic and sexual activities among Norwegian adolescents, including internet-partners,(More)
BACKGROUND Intrauterine devices (IUDs) are highly effective and are the most widely used reversible contraceptive method in the world. However, in developed countries IUDs are among the least common methods of contraception used. We evaluated the effect of interventions to increase uptake of the copper IUD, a long-acting, reversible contraceptive method. (More)
OBJECTIVES We present the first evidence-based method for estimating public health and cost impacts of partner notification (PN) that takes account of sexual partnership type. METHODS Our algorithm uses routine clinical data, probability survey data, and transmission parameters. We propose 2 new epidemiological concepts to quantify PN impact: "[the](More)
BACKGROUND National health strategies have called for an expansion of the role of primary care in England to increase access to sexual health services. However, there is little guidance for service planners and commissioners as to the public health impact of different combinations of specialist genitourinary medicine (GUM) clinics and primary care based(More)
BACKGROUND Childhood obesity is high on the policy agenda of wealthier nations, and many interventions have been developed to address it. This work describes an overview of schemes for obese and overweight children and young people in England, and the 'mapping' approach we used. METHODS Our search strategy, inclusion criteria and coding frame had to be(More)
BACKGROUND Copper intrauterine devices (copper-IUDs) are relatively safer, more effective and inexpensive compared with hormonal methods and are the most widely used reversible contraception in the world, but are underused in developed countries. We systematically reviewed randomized controlled trials and controlled before-and-after studies to determine the(More)
BACKGROUND Those who go online regarding their sexual health are potential users of new Internet-based sexual health interventions. Understanding the size and characteristics of this population is important in informing intervention design and delivery. OBJECTIVE We aimed to estimate the prevalence in Britain of recent use of the Internet for key sexual(More)