An observational study in Hepatitis B, Vaccination and Health Knowledge, Attitudes, Practice, sponsored by Centre Hospitalier de Saint-Denis. Completed at 1 site in France. Per ClinicalTrials.gov, last updated 2025-05-31.
Sponsored by Centre Hospitalier de Saint-Denis · Observational
This study aims to find out whether people accurately know their hepatitis B vaccination status. It focuses on individuals born in France who visit a sexual health clinic (CeGIDD) in Saint-Denis. During the consultation, each person is asked whether they think they are vaccinated against hepatitis B. Then, a blood test is done to check if they really are. The goal is to see how often people's answers match their actual medical status. The study also looks at factors like age, gender, education level, and whether they have a regular doctor to understand who is more likely to be unsure or mistaken about their vaccination status. About 200 participants are expected to take part.
1,662 studies on the registry are indexed under Hepatitis B; 192 are open to participants now.
This study's enrollment of 200 is below the median of 395 across 410 observational studies indexed under Hepatitis B.
Browse Hepatitis B studies →Centre Hospitalier de Saint-Denis is the lead sponsor of 45 studies on the registry; 19 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Participants will be adults born in France who attend the CeGIDD (sexual health clinic) at Delafontaine Hospital in Saint-Denis. These individuals are seeking care and require a hepatitis B serology test. The population includes people with diverse backgrounds in terms of age, sex, sexual orientation, and education level. Patients with a known history of past hepatitis B infection will be excluded. The study focuses on evaluating the reliability of their self-reported hepatitis B vaccination status compared to serological test results.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
- Patients with a history of past hepatitis B infection.
The percentage of patients who declared being vaccinated against hepatitis B and who are confirmed to be truly vaccinated by serology.
Time frame: July 2020 - October 2020
Ran from Jul 2020 to primary completion in Oct 2020, 3 months.
Of 114 non-industry observational studies under Hepatitis B, half reached primary completion within 60 months of starting (the median), counting those still running; a quarter within 18 and three quarters within 109. This study's 3 months is below that.
Counting every sponsor, half of 133 studies reached it within 55 months; a quarter within 17 and three quarters within 108.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in May 2025. You cannot join it, but the record below documents what was studied.
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Centre Hospitalier de Saint-Denis