A cost-effectiveness analysis of adding a human papillomavirus vaccine to the Australian National Cervical Cancer Screening Program
Shalini Kulasingam A J , Luke Connelly B , Elizabeth Conway C , Jane S. Hocking D , Evan Myers E , David G. Regan F , David Roder G , Jayne Ross H and Gerard Wain IA Duke University, Center for Clinical Health Policy Research, Durham, NC 27710, USA.
B The University of Queensland, Mayne Medical School, Herston, Qld 4006, Australia.
C CSL Limited, Parkville, Vic. 3052, Australia.
D The University of Melbourne, Parkville, Vic. 3010, Australia.
E Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, USA.
F National Centre in HIV Epidemiology and Clinical Research, The University of New South Wales, Darlinghurst, NSW 2010, Australia.
G Group Executive, Research and Information Science, The Cancer Council South Australia, Unley, SA 5061, Australia.
H Jayne Ross & Associates, Cheltenham, NSW 2118, Australia.
I Department of Gynaecological Oncology, Westmead Hospital, Westmead, NSW 2145, Australia.
J Corresponding author. Email: kulas002@mc.duke.edu
Sexual Health 4(3) 165-175 https://doi.org/10.1071/SH07043
Submitted: 19 June 2007 Accepted: 22 June 2007 Published: 23 August 2007
Abstract
Background: The cost-effectiveness of adding a human papillomavirus (HPV) vaccine to the Australian National Cervical Screening Program compared to screening alone was examined. Methods: A Markov model of the natural history of HPV infection that incorporates screening and vaccination was developed. A vaccine that prevents 100% of HPV 16/18-associated disease, with a lifetime duration of efficacy and 80% coverage offered through a school program to girls aged 12 years, in conjunction with current screening was compared with screening alone using cost (in Australian dollars) per life-year (LY) saved and quality-adjusted life-year (QALY) saved. Sensitivity analyses included determining the cost-effectiveness of offering a catch-up vaccination program to 14–26-year-olds and accounting for the benefits of herd immunity. Results: Vaccination with screening compared with screening alone was associated with an incremental cost-effectiveness ratio (ICER) of $51 103 per LY and $18 735 per QALY, assuming a cost per vaccine dose of $115. Results were sensitive to assumptions about the duration of vaccine efficacy, including the need for a booster ($68 158 per LY and $24 988 per QALY) to produce lifetime immunity. Accounting for herd immunity resulted in a more attractive ICER ($36 343 per LY and $13 316 per QALY) for girls only. The cost per LY of vaccinating boys and girls was $92 052 and the cost per QALY was $33 644. The cost per LY of implementing a catch-up vaccination program ranged from $45 652 ($16 727 per QALY) for extending vaccination to 14-year-olds to $78 702 ($34 536 per QALY) for 26-year-olds. Conclusions: These results suggest that adding an HPV vaccine to Australia’s current screening regimen is a potentially cost-effective way to reduce cervical cancer and the clinical interventions that are currently associated with its prevention via screening alone.
[1]
[2]
[3]
[4] Bosch FX, Manos MM, Munoz N, Sherman M, Jansen AM, Peto J, et al. Prevalence of human papillomavirus in cervical cancer: a worldwide perspective. International biological study on cervical cancer (IBSCC) study group. J Natl Cancer Inst 1995; 87 796–802.
| Crossref | GoogleScholarGoogle Scholar | PubMed | [accessed 8 June, 2007]
[12] Clifford GM, Rana RK, Franceschi S, Smith JS, Gough G, Pimenta JM. Human papillomavirus genotype distribution in low-grade cervical lesions: comparison by geographic region and with cervical cancer. Cancer Epidemiol Biomarkers Prev 2005; 14 1157–64.
| Crossref | GoogleScholarGoogle Scholar | PubMed | [accessed 8 June, 2007]
[35]
[36]
[37] Davy MLJ, Dodd TJ, Luke CJ, Roder DM. Cervical cancer: effect of glandular cell type on prognosis, treatment, and survival. Obstet Gynecol 2003; 101 38–45.
| Crossref | GoogleScholarGoogle Scholar | PubMed | [accessed 8 June, 2007]
[48]
[49]
[50]
[51]
[52] Goldie SJ, Kohli M, Grima D, Weinstein MC, Wright TC, Bosch FX, et al. Projected clinical benefits and cost-effectiveness of a human papillomavirus 16/18 vaccine. J Natl Cancer Inst 2004; 96 604–15.
| PubMed | [accessed 8 June 2007]
[57]
[58]
[59] Dasbach EJ, Elbasha EH, Insinga RP. Mathematical models for predicting the epidemiologic and economic impact of vaccination against human papillomavirus infection and disease. Epidemiol Rev 2006; 28 88–100.
| Crossref | GoogleScholarGoogle Scholar | PubMed |
[60] Elbasha EH, Dasbach EJ, Insinga RP. Model for assessing human papillomavirus vaccination strategies. Emerg Infect Dis 2007; 13 28–41.
| PubMed |
[61] Taira AV, Neukermans CP, Sanders GD. Evaluating human papillomavirus vaccination programs. Emerg Infect Dis 2004; 10 1915–23.
| PubMed |