Trial reportThe Journal of infectious diseases2014
Reduced prevalence of vulvar HPV16/18 infection among women who received the HPV16/18 bivalent vaccine: a nested analysis within the Costa Rica Vaccine Trial.
Trial report in The Journal of infectious diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00128661 (A Double-Blind, Controlled, Randomized, Phase III Study of the Efficacy of an HPV16/18 VLP Vaccine in the Prevention of Advanced Cervical Intraepithelial Neoplasia), which is not on this map. Cited by 7 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Double-Blind, Controlled, Randomized, Phase III Study of the Efficacy of an HPV16/18 VLP Vaccine in the Prevention of Advanced Cervical Intraepithelial Neoplasia (CIN2, CIN3, Adenocarcinoma In Situ [AIS] and Invasive Cervical Cancer) Associated With HPV 16 or HPV 18 Cervical Infection in Healthy Young Adult Women in Costa Rica.
Who cites it
7 citing papers in PubMed, 3 syntheses or guidelines pooled it, 21 citations in OpenAlex.
- Human papillomavirus (HPV) vaccination for the prevention of cervical cancer and other HPV-related diseases: a network meta-analysis.The Cochrane database of systematic reviews · 2025Pooled it
- Prophylactic vaccination against human papillomaviruses to prevent cervical cancer and its precursors.The Cochrane database of systematic reviews · 2018Pooled it
- The incidence, clearance and persistence of non-cervical human papillomavirus infections: a systematic review of the literature.BMC infectious diseases · 2016Pooled it
- Prophylactic and Therapeutic HPV Vaccines: Current Scenario and Perspectives.Frontiers in cellular and infection microbiology · 2022Review
- Article
- Eurogin Roadmap 2015: How has HPV knowledge changed our practice: Vaccines.International journal of cancer · 2016Review
- In North America, some ovarian cancers express the oncogenes of preventable human papillomavirus HPV-18.Scientific reports · 2015Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
19 authors at 5 institutions in 4 countries.
Funding
Abstract
backgroundVaccine efficacy (VE) against vulvar human papillomavirus (HPV) infection has not been reported and data regarding its epidemiology are sparse.
methodsWomen (n = 5404) age 22-29 present at the 4-year study visit of the Costa Rica Vaccine Trial provided vulvar and cervical samples. A subset (n = 1044) was tested for HPV DNA (SPF10/LiPA25 version 1). VE against 1-time detection of vulvar HPV16/18 among HPV vaccinated versus unvaccinated women was calculated and compared to the cervix. Prevalence of and risk factors for HPV were evaluated in the control arm (n = 536).
resultsVulvar HPV16/18 VE (54.1%; 95% confidence interval [CI], 4.9%-79.1%) was comparable to cervix (45.8%; 95% CI, 6.4%-69.4%). Vulvar and cervical HPV16 prevalence within the control arm was 3.0% and 4.7%, respectively. Independent risk factors for vulvar HPV were similar to cervix and included: age (adjusted odds ratio [aOR] 0.5 [95% CI, .3-.9] ≥28 vs 22-23]); marital status (aOR 2.3 [95% CI, 1.5-3.5] single vs married/living-as-married); and number of sexual partners (aOR 3.6 [95% CI, 1.9-7.0] ≥6 vs 1).
conclusionsIn this intention-to-treat analysis, VE against vulvar and cervical HPV16/18 were comparable 4 years following vaccination. Risk factors for HPV were similar by anatomic site. CLINICAL TRIALS REGISTRATION: NCT00128661.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.