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Increased sexually transmitted infection incidence in a low risk population: identifying the risk factors
Frances Shiely1, Mary Horgan, Kevin Hayes
1Department of Epidemiology and Public Health, University College Cork, Cork, Ireland. f.shiely@ucc.ie
Background:
Between 1994 and 2006, the incidence of sexually transmitted infections (STIs) in Ireland has increased by over 300%. Recent literature would suggest that this figure is an underestimation of the true scale of infection. Our objective was to determine the risk factors associated with STI diagnosis in a population with a rapidly increasing STI incidence.
Methods:
Using diagnostic, demographic and behavioural information from three STI clinics (January 1999 to December 2006), multivariable logistic regression models were used to identify risk factors associated with STI diagnosis.
Results:
Age, smoking and inconsistent condom use are the dominant risk factors. Males aged 20-24 years and females aged <20 years being at greatest risk of STI acquisition. Having three or more partners was not associated with an elevated risk of STI diagnosis. At univariate level, homosexuals and bisexuals have a decreased risk of STI acquisition compared with heterosexuals. Rate of consistent condom use was low < or =13.3%.
Conclusions:
Age, condom use and number of sexual partners are important risk factors for STI diagnosis. Contrary to international STI literature, having multiple sexual partners does not increase STI incidence. Age specific behavioural interventions that target increased condom use may be effective in reducing STIs in Ireland. At policy level, a reduction in the taxation on condoms from 13.5 to 5% is needed to lower the prohibitive cost and increase their use.
Insights
Sexually transmitted infections (STIs) are rising in Ireland. Key risk factors include age and inconsistent condom use, not multiple partners, highlighting the need for targeted interventions.
Area of Science:
- Public Health
- Epidemiology
- Infectious Diseases
Background:
- Ireland experienced over a 300% increase in sexually transmitted infections (STIs) between 1994 and 2006.
- This reported increase may underestimate the true prevalence of STIs.
- The study aimed to identify risk factors for STI diagnosis amid rising incidence.
Purpose of the Study:
- To determine the primary risk factors associated with sexually transmitted infection (STI) diagnosis.
- To analyze demographic and behavioral data from STI clinics to understand risk profiles.
Main Methods:
- Utilized diagnostic, demographic, and behavioral data from three STI clinics.
- Data collection spanned from January 1999 to December 2006.
- Multivariable logistic regression models were employed to identify risk factors.
Main Results:
- Age, smoking, and inconsistent condom use emerged as dominant risk factors for STI diagnosis.
- Younger age groups, specifically males aged 20-24 and females under 20, faced the highest risk.
- Having three or more sexual partners was not significantly associated with increased STI risk; consistent condom use was low (≤13.3%).
Conclusions:
- Age, condom use, and sexual partner numbers are significant factors in STI diagnosis.
- Contrary to global trends, multiple partners did not elevate STI incidence in this population.
- Age-specific behavioral interventions promoting condom use and policy changes (e.g., reduced condom taxation) are recommended to curb STI rates.
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