Sexual inactivity and occurrence of STIs in relation to weight status in women: Two large population-based studies

Association of body mass index with anal human papillomavirus infection and histologically confirmed high-grade squamous intraepithelial lesions in people who receive services at the Anal Neoplasia Clinic in Puerto Rico

Objective

This study aimed to assess the association of body mass index (BMI) with anal high-risk human papillomavirus (HR-HPV) and biopsy-confirmed histologic anal high-grade squamous intraepithelial lesions (HSIL) among a clinic-based sample of Hispanics in Puerto Rico.

Methods

This cross-sectional study evaluated medical records of adults who received services at the Anal Neoplasia Clinic of the University of Puerto Rico Comprehensive Cancer Center between October 2014 and December 2022. The study included 543 records with complete clinical information regarding anal HR-HPV and anal HSIL status. Chi-square and logistic regression analyses were performed.

Results

Mean age of participants was 44.10 ± 13.24 years, 65.2% were men, 71.7% were HIV-infected, 74.4% had anal HR-HPV infection, and 37.9% had biopsy-confirmed HSIL. Regarding BMI, 2.4% were underweight, 31.9% normal weight, and 39.0 % overweight; while 17.3 % had class I, 5.2% class II, and 4.2% class III obesity. No significant association was observed between BMI and anal HR-HPV infection in adjusted analyses. Lower odds of anal HSIL were observed among overweight individuals (OR: 0.63, 95% CI: 0.41 - 0.99) and those with class II/III obesity (OR: 0.48, 95% CI: 0.22 - 1.01) compared to adults with underweight/normal BMI, after adjusting for potential confounders. No significant association was observed for class I obesity.

Conclusion

BMI was not associated with anal HR-HPV infection. Overweight and obese individuals had lower odds of having anal HSIL than adults with underweight/normal BMI. This finding could suggest underdiagnosis of HSIL among overweight/obese individuals, or reduced risk in this group.

Non-participation in cervical cancer screening according to health, lifestyle and sexual behavior: A population-based study of nearly 15,000 Danish women aged 23-45 years

High participation in cervical cancer screening is essential for an effective screening program. In this population-based study, we investigated associations between general health, lifestyle and sexual behavior, and non-participation in cervical cancer screening in Denmark. During 2011-2012, a random sample of women aged 18-45 years from the general female population were invited to participate in a survey regarding health, lifestyle and sexual habits. Altogether 18,631 women responded (response rate: 75.1%), of whom 14,271 women aged 23-45 years were included in this analysis. Information on screening participation within four years after response, and data on sociodemographic characteristics, was obtained from nationwide registers. Logistic regression was used to calculate odds ratios (ORs) for non-participation, crude and adjusted for sociodemographic characteristics. Overall, 13.9% of the women were not screened during follow-up. The odds of non-participation was increased in women who were overweight (OR_adj. = 1.20; 95% CI, 1.06-1.35), obese (OR_adj. = 1.46; 95% CI, 1.27-1.67), perceived themselves as much too fat (OR_adj. = 1.50; 95% CI, 1.29-1.74), had poor self-perceived health (OR_adj. = 1.22; 95% CI, 1.03-1.45) or smoked daily (OR_adj. = 1.81; 95% CI, 1.61-2.03). Conversely, women with previous genital warts or other sexually transmitted infections, and young women with ≥10 lifetime sexual partners or ≥2 new recent partners, had decreased odds of non-participation. In conclusion, obesity, poor self-perceived health and daily smoking were associated with lower participation in cervical cancer screening. Interventions targeting these groups are needed.

The role of body mass index in incidence and persistence of cervical human papillomavirus infection

PURPOSE

This study aimed to assess the association between body mass index and incident or persistent cervical high-risk human papillomavirus (hrHPV) infection.

METHODS

This cohort study included 6809 women from the general Danish population who participated in two clinical visits (in 1991-1993 and in 1993-1995). Height and weight were measured by nurses, lifestyle data were obtained by structured interviews, and cervical cytology samples were obtained for hrHPV DNA testing. We conducted log-binomial regression to estimate risk ratios (RRs) with 95% confidence intervals (CIs) of incident and type-specific persistent hrHPV infection according to body mass index, adjusting for age, education, smoking, and the number of sexual partners in the past year.

RESULTS

We found no increased risk of incident hrHPV infection in women who were underweight (RR_adjusted, 0.97; 95% CI, 0.64-1.48), overweight (RR_adjusted, 0.98, 95% CI, 0.82-1.17), or obese (RR_adjusted, 0.93; 95% CI, 0.63-1.36) compared with women of normal weight. The risk of hrHPV persistence was similar in overweight (RR_adjusted, 0.98; 95% CI, 0.71-1.34) and obese (RR_adjusted, 1.00; 95% CI, 0.56-1.79) women compared with women of normal weight, whereas underweight women had a lower risk (RR_adjusted, 0.32; 95% CI, 0.11-0.95).

CONCLUSIONS

Overweight and obesity were not associated with HPV incidence or persistence when adjusting for sexual behavior.