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Self-sampling by elderly women for the detection of HPV and cervical dysplasia
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health, Research group (Dept. of women´s and children´s health), Reproductive biology.ORCID iD: 0000-0002-6549-9311
2021 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In Sweden, about 30% of the cervical cancer cases occur in women older than 60 and the mortality rate is as high as about 70% in this age group. There is a lack of knowledge concerning the prevalence of infection with oncogenic types of HPV, and cervical dysplasia in women of 60 years and older. Screening for oncogenic types of HPV is more effective than cytology in reducing the incidence of cervical cancer. It is established that self-collected samples are equally accurate as clinician-taken cervical samples when a validated PCR-based test is used for analysis. 

Objectives: The overall aim was to gain knowledge about HPV infection and cervical dysplasia prevalence in elderly women and to evaluate the acceptability of repeated self-sampling at home for HPV testing.

Material and Methods: In Paper I, we investigated the prevalence of HPV and HPV-related cervical dysplasia in 1051 elderly women aged 60 to 89 attending an outpatient gynecology clinic. A gynecologist collected these samples. In Paper II, repeated self-sampling at home for HPV testing was offered to 375 women in each of the four age groups 60, 65, 70, and 75. In Paper III, we carried out a descriptive study with quantitative and qualitative methods to describe older women’s experiences of self-sampling. In Paper IV, we investigated the incidence of oncogenic HPV and HPV-related dysplasia among 632 women aged 65 to 80 years who five years earlier had a negative HPV test.

Results: The prevalence of HPV was just over 4% both when the samples were collected by a clinician (Paper I) and by self-sampling (Paper II). The majority of women positive in both the first and second HPV tests had dysplasia in histology. Of the women with dysplasia in histology, more than 80% had normal cytology. In Paper II, a self-collected sample was provided by 59.5% of the invited women. In Paper III, 97.2% of eligible women answered the survey, and 13 of 16 invited women participated in the interviews. Most of them reported that they prefer self-sampling because it was easy to perform, less embarrassing, and less time-consuming than a clinic visit. In Paper IV, the incidence of oncogenic HPV was 2.8% in the first test and 1.3% in the second test, and mild cervical dysplasia was found in 50% of women with persistent HPV infection.

Conclusions: A significant proportion of elderly women were found to have a persistent HPV infection. Among them, there was a high prevalence of dysplasia as diagnosed by histology. Cytology showed extremely low sensitivity. Self-sampling at home combined with repeat HPV testing was well accepted among older women.  

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2021. , p. 74
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine, ISSN 1651-6206 ; 1717
Keywords [en]
HPV, self-sampling, cervical dysplasia, elderly women.
National Category
Gynaecology, Obstetrics and Reproductive Medicine
Research subject
Health Care Research
Identifiers
URN: urn:nbn:se:uu:diva-432936ISBN: 978-91-513-1125-8 (print)OAI: oai:DiVA.org:uu-432936DiVA, id: diva2:1521923
Public defence
2021-03-18, Sal IV, Universitetshuset, Biskopsgatan 3, Uppsala, 13:00 (Swedish)
Opponent
Supervisors
Available from: 2021-03-01 Created: 2021-01-25 Last updated: 2025-02-11
List of papers
1. HPV prevalence and HPV-related dysplasia in elderly women
Open this publication in new window or tab >>HPV prevalence and HPV-related dysplasia in elderly women
2018 (English)In: PLOS ONE, E-ISSN 1932-6203, Vol. 13, no 1, article id e0189300Article in journal (Refereed) Published
Abstract [en]

Introduction: In Sweden, where screening ends at the age of 60, about 30% of the cervical cancer cases occur in women older than 60. The aim of the present study was to investigate the prevalence of HPV and cervical dysplasia in women of 60 years and above.

Patients and methods: From September 2013 until June 2015, 1051 women aged 60-89 years (mean 68 years) were sampled for an HPV test when attending an outpatient gynecology clinic. Women with positive results had a second HPV test and liquid based cytology (LBC), after 3.5 months on average. Those with a positive second HPV test were examined by colposcopy, and biopsy and a sample for LBC was obtained.

Results: The prevalence of HPV was 4.1%, (95% CI 3.0-5.5, n = 43) at the first test, and at the second test 2.6% remained positive (95% CI 1.7-3.8, n = 27). The majority of women positive in both HPV tests, had dysplasia in histology, 81.5% (22/27) (4 CIN 2-0.4%, 18 CIN 1-1.7%). HPV-related dysplasia was found in 2.1%, (95% CI 1.3-3.2,n = 22) of the 1051 women. Four of the 22 women with positive HPV tests also had abnormal cytology, one ASCUS and three CIN 1. No cancer or glandular dysplasia was detected.

Conclusion: A significant proportion of elderly women were found to have a persistent cervical HPV infection. Among them there was a high prevalence of CIN diagnosed by histology. The HPV test showed high sensitivity and specificity in detecting CIN in elderly women, while cytology showed extremely low sensitivity.

Place, publisher, year, edition, pages
PUBLIC LIBRARY SCIENCE, 2018
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-341575 (URN)10.1371/journal.pone.0189300 (DOI)000419689600008 ()29320507 (PubMedID)
Available from: 2018-02-12 Created: 2018-02-12 Last updated: 2021-06-14Bibliographically approved
2. Cervical dysplasia in elderly women performing repeated self-sampling for HPV testing
Open this publication in new window or tab >>Cervical dysplasia in elderly women performing repeated self-sampling for HPV testing
Show others...
2018 (English)In: PLOS ONE, E-ISSN 1932-6203, Vol. 13, no 12, article id e0207714Article in journal (Refereed) Published
Abstract [en]

Background About 30% of the cervical cancer cases in Sweden occur in women older than 60. The primary aim was to evaluate the acceptability of repeated self-sampling at home for HPV-testing in elderly women. The prevalence of HPV and HPV related dysplasia as well as the sensitivity of cytology was evaluated. Methods Repeated self-sampling at home for HPV testing was offered 375 women in each of the four age groups 60, 65, 70 and 75 years. Women with two consecutive positive HPV tests were examined with sampling for histology and cytology. Findings A self-sample was provided by 59.5% (893/1500) of the invited women. The overall prevalence of HPV was 4.4% (95% CI 3.2-6.0, n = 39) in the first test, and 2.5% were persistent positive in the second test (95% C 1.6-3.8, n = 22) collected on average 5.5 months later. Dysplasia, was found in 1.8% (16/893) (95% CI 1.1-3.0) and CIN 2+ in 1.0% (9/893) (95% CI 0.5-2.0) of the women. Of the 16 women with dysplasia in histology, 13 (81.2%) had a normal cytology. Interpretation Repeated self-sampling at home combined with HPV testing was well accepted among elderly women. A high prevalence of CIN was diagnosed by histology. Cytology showed extremely low sensitivity and should not be recommended for this age group.

National Category
Gynaecology, Obstetrics and Reproductive Medicine
Identifiers
urn:nbn:se:uu:diva-372761 (URN)10.1371/journal.pone.0207714 (DOI)000452212400061 ()30517176 (PubMedID)
Available from: 2019-01-14 Created: 2019-01-14 Last updated: 2025-02-11Bibliographically approved
3. Elderly women's experiences of self-sampling for HPV testing
Open this publication in new window or tab >>Elderly women's experiences of self-sampling for HPV testing
2020 (English)In: BMC Cancer, E-ISSN 1471-2407, Vol. 20, no 1, article id 473Article in journal (Refereed) Published
Abstract [en]

Background

Self-sampling for HPV testing, as an alternative to the conventional speculum based sampling, is highly acceptable to women of screening ages. The aim of this study was to describe older women’s (60 to 75 years) experiences of self-sampling.

Methods

In Sweden a descriptive study with quantitative and qualitative methods was designed to collect data from a survey of women who participated in self-sampling for HPV testing. Individual interviews were done with women who tested positive in the first self-sampling, and were either negative in their second HPV test or were positive in their second HPV test, but without precancerous lesions or cancer.

Results

Of 893 eligible women, 868 (97.2%) answered the survey. Among the surveyed women, 49.2% reported it was very easy to perform self-sampling, 46.8% answered it was easy and 2.0% answered it was not easy. A majority (58.9%) answered that they prefer self-sampling, 16.5% that they prefer sample collection by a healthcare provider, 23.7% did not have any preference and 0.9% did not answer the question. In the interviews, 13 of 16 invited women participated. Most of them reported that they prefer self-sampling because it was easy to perform, less embarrassing and less time consuming than a visit to a clinic. The majority of women reported that they were not worried when informed about having an HPV positive test. Overall, participating women with better knowledge about the significance of an HPV infection were more worried about having a positive HPV test.

Conclusion

Cervical cancer remains a highly preventable disease through screening and early treatment. Our results indicated that vaginal self-sampling for HPV testing was a well-accepted method for cervical cancer prevention in this group of older women.

Keywords
HPV, Self-sampling, Cervical cancer, Prevention, Elderly, Women
National Category
Cancer and Oncology Gynaecology, Obstetrics and Reproductive Medicine
Identifiers
urn:nbn:se:uu:diva-417824 (URN)10.1186/s12885-020-06977-0 (DOI)000537858300004 ()32456679 (PubMedID)
Available from: 2020-08-28 Created: 2020-08-28 Last updated: 2025-02-11Bibliographically approved
4. Incidence of oncogenic HPV and HPV-related dysplasia five years after a negative HPV test by self-sampling in elderly women
Open this publication in new window or tab >>Incidence of oncogenic HPV and HPV-related dysplasia five years after a negative HPV test by self-sampling in elderly women
Show others...
2022 (English)In: Infectious Agents and Cancer, E-ISSN 1750-9378, Vol. 17, no 42Article in journal (Refereed) Published
Abstract [en]

Purpose: Cervical cancer prevention for older women can be challenging since there are no specific guidelines for this group. This study aimed to determine the incidence of oncogenic HPV and HPV-related dysplasia in elderly women 5 years after being HPV negative.

Methods: Invited women participated five years earlier in a study where self-sampling for HPV testing was applied, at this time, they were all HPV negative. The women were now, five years later invited to perform self-sampling for HPV testing. Women with a positive result performed a repeat HPV test. Those with a positive repeat HPV test were examined by colposcopy, biopsy and cytology.

Results: Of the 804 invited women, 634 (76.9%) agreed to participate in the study and a self-sampling kit was sent to them. Of these, 99.6% (632/634) sent a sample to the HPV laboratory. The participation rate in each age group was 93.3% at age 65, 74.0% at age 70, 80.7% at age 75 and 64.6% at age 80. Overall 18 women (2.8%, 95% CI 3.2 to 6.0) were HPV positive in the first test and 8 (1.3%, 95% CI 0.6 to 2.6) in the second test. Sampling for the second test was done on average 5.4 months after the first test. Fifty per cent (4/8) of the women with a positive repeat test had dysplasia in histology.

Conclusions: The incidence of HPV in previously HPV-negative elderly women was low. Among women who were HPV positive in a repeat test, there was a high prevalence of low grade dysplasia.

Place, publisher, year, edition, pages
Springer Nature, 2022
Keywords
Cervix, HPV, cervical intraepithelial neoplasia, elderly, incidence, self-sampling
National Category
Clinical Medicine Gynaecology, Obstetrics and Reproductive Medicine
Research subject
Health Care Research
Identifiers
urn:nbn:se:uu:diva-432932 (URN)10.1186/s13027-022-00453-z (DOI)000835677600002 ()35922825 (PubMedID)
Available from: 2021-01-25 Created: 2021-01-25 Last updated: 2025-02-11Bibliographically approved

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