HPV Vaccination: Evaluation of Reminder Prompts for Doses 2 & 3
Primary Purpose
Human Papilloma Virus Infection Type 11, Human Papilloma Virus Infection Type 16, Human Papilloma Virus Infection Type 18
Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
Simple Reminder
Sponsored by
About this trial
This is an interventional health services research trial for Human Papilloma Virus Infection Type 11 focused on measuring HPV Vaccinations, Quadrivalent Vaccine
Eligibility Criteria
Inclusion Criteria:
Provider Criteria
- All pediatricians and nurse practitioners who provide health care at the 5 CHICA clinics will be included in this study
Subject Criteria
- Patients will be 11-17 year old
- Males and females
- A visit to at least one of the five CHICA clinics
- Eligible for the 2nd or 3rd dose of HPV vaccine
Exclusion Criteria:
- Patients in the eligible age range who have not started or have completed the HPV vaccine series will be excluded
Sites / Locations
- Eskenazi Health Outpatient Care Center
- Eskenazi Health Center Blackburn
- Eskenazi Health Center Forest Manor
- Eskenazi Health West 38th Street
- Eskenazi Health Center Pecar
Arms of the Study
Arm 1
Arm 2
Arm Type
No Intervention
Experimental
Arm Label
Usual Care
Simple Reminder
Arm Description
The clinical team will be left to identify the need for a follow-up HPV vaccine through existing mechanisms
A simple reminder prompt in which CHICA will provide an immunization reminder to the physician that the child is eligible for the 2nd or 3rd dose of vaccine.
Outcomes
Primary Outcome Measures
Rate of physician-targeted automated HPV vaccination reminders on 2nd and 3rd dose HPV vaccination rates among 11-17 year old male and female patients
To evaluate the rate of physician-targeted automated HPV vaccination reminders on 2nd and 3rd dose HPV vaccination rates among 11-17 year old male and female patients who have received 1 or 2 doses of vaccine.
Secondary Outcome Measures
Assessment of Physician Acceptance of the Prompts
The study team will compare changes in vaccination rates with qualitative feedback from providers.
Full Information
NCT ID
NCT02558803
First Posted
September 18, 2015
Last Updated
May 24, 2016
Sponsor
Regenstrief Institute, Inc.
Collaborators
Merck Sharp & Dohme LLC, Indiana University
1. Study Identification
Unique Protocol Identification Number
NCT02558803
Brief Title
HPV Vaccination: Evaluation of Reminder Prompts for Doses 2 & 3
Official Title
HPV Vaccination: Evaluation of Reminder Prompts for Doses 2 & 3
Study Type
Interventional
2. Study Status
Record Verification Date
May 2016
Overall Recruitment Status
Completed
Study Start Date
February 2015 (undefined)
Primary Completion Date
May 2016 (Actual)
Study Completion Date
May 2016 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Regenstrief Institute, Inc.
Collaborators
Merck Sharp & Dohme LLC, Indiana University
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
Randomized, 2-arm observational study. The 2 arms (randomized at the level of health care provider) will be: 1. usual practice; 2. automated reminders to recommend 2nd and 3rd doses of HPV vaccine for eligible male and female adolescents who have initiated vaccination.
Detailed Description
The study team plans to conduct a randomized clinical trial with three arms: (1) usual care, (2) the simple reminder, and (3) the simple reminder plus the script. Randomization will be carried out at the physician level at each clinical site, to ensure that all three treatment arms are represented in each clinic. The primary outcome, HPV vaccine acceptance, will be assessed for each study participant.
This study will be implemented through the Child Health Improvement through Computer Automation system (CHICA). CHICA is a computer based clinical decision support system that has been operating in the Wishard/Eskenazi system since 2004. CHICA now operates in 5 clinics in the health system and has served well over 37,000 children. CHICA supports primary pediatric care, supporting screening, counseling, anticipatory guidance, vaccinations, and chronic disease diagnosis and management.
CHICA is unique in several respects. These include a unique tailored, scannable paper interface, a prioritization scheme that assures the highest priority reminders are given to physicians, and the ability to collect data directly from families in the waiting room. CHICA acts as a front end to the Regenstrief Medical Record System (RMRS), the electronic medical record for the Eskenazi health system. The RMRS and CHICA communicate using industry standard HL7 communication protocols.
When a patient checks into a CHICA clinic, CHICA receives an HL7 ADT (registration) message. In response CHICA requests a download of the patient's record from the RMRS. CHICA applies a set of Arden Syntax rules to the patient's data to select 20 yes/no questions that are printed. The family answers these questions by checking boxes. The nurse or medical assistant enters height, weight, etc. on the same form and the form is scanned. The data enter CHICA's database through optical mark recognition and optical character recognition. Recently we have begun converting from this scannable paper format to electronic tablets.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Human Papilloma Virus Infection Type 11, Human Papilloma Virus Infection Type 16, Human Papilloma Virus Infection Type 18, Human Papilloma Virus Infection Type 6, Cervical Cancer, Genital Warts, Oropharyngeal Cancer
Keywords
HPV Vaccinations, Quadrivalent Vaccine
7. Study Design
Primary Purpose
Health Services Research
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare Provider
Allocation
Randomized
Enrollment
1305 (Actual)
8. Arms, Groups, and Interventions
Arm Title
Usual Care
Arm Type
No Intervention
Arm Description
The clinical team will be left to identify the need for a follow-up HPV vaccine through existing mechanisms
Arm Title
Simple Reminder
Arm Type
Experimental
Arm Description
A simple reminder prompt in which CHICA will provide an immunization reminder to the physician that the child is eligible for the 2nd or 3rd dose of vaccine.
Intervention Type
Behavioral
Intervention Name(s)
Simple Reminder
Intervention Description
A simple reminder prompt in which CHICA will provide an immunization reminder to the physician that the child is eligible for the 2nd or 3rd dose of vaccine.
Primary Outcome Measure Information:
Title
Rate of physician-targeted automated HPV vaccination reminders on 2nd and 3rd dose HPV vaccination rates among 11-17 year old male and female patients
Description
To evaluate the rate of physician-targeted automated HPV vaccination reminders on 2nd and 3rd dose HPV vaccination rates among 11-17 year old male and female patients who have received 1 or 2 doses of vaccine.
Time Frame
Six Months
Secondary Outcome Measure Information:
Title
Assessment of Physician Acceptance of the Prompts
Description
The study team will compare changes in vaccination rates with qualitative feedback from providers.
Time Frame
Six Months
10. Eligibility
Sex
All
Minimum Age & Unit of Time
11 Years
Maximum Age & Unit of Time
17 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Provider Criteria
All pediatricians and nurse practitioners who provide health care at the 5 CHICA clinics will be included in this study
Subject Criteria
Patients will be 11-17 year old
Males and females
A visit to at least one of the five CHICA clinics
Eligible for the 2nd or 3rd dose of HPV vaccine
Exclusion Criteria:
Patients in the eligible age range who have not started or have completed the HPV vaccine series will be excluded
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Gregory D Zimet, PhD
Organizational Affiliation
Indiana University
Official's Role
Principal Investigator
Facility Information:
Facility Name
Eskenazi Health Outpatient Care Center
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46202
Country
United States
Facility Name
Eskenazi Health Center Blackburn
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46208
Country
United States
Facility Name
Eskenazi Health Center Forest Manor
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46226
Country
United States
Facility Name
Eskenazi Health West 38th Street
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46254
Country
United States
Facility Name
Eskenazi Health Center Pecar
City
Indianapolis
State/Province
Indiana
ZIP/Postal Code
46268
Country
United States
12. IPD Sharing Statement
Plan to Share IPD
No
IPD Sharing Plan Description
Individual provider data will not be made available.
Citations:
PubMed Identifier
16949997
Citation
Parkin DM, Bray F. Chapter 2: The burden of HPV-related cancers. Vaccine. 2006 Aug 31;24 Suppl 3:S3/11-25. doi: 10.1016/j.vaccine.2006.05.111.
Results Reference
background
PubMed Identifier
20138345
Citation
Giuliano AR, Anic G, Nyitray AG. Epidemiology and pathology of HPV disease in males. Gynecol Oncol. 2010 May;117(2 Suppl):S15-9. doi: 10.1016/j.ygyno.2010.01.026. Epub 2010 Feb 6.
Results Reference
background
PubMed Identifier
20307840
Citation
Chaturvedi AK. Beyond cervical cancer: burden of other HPV-related cancers among men and women. J Adolesc Health. 2010 Apr;46(4 Suppl):S20-6. doi: 10.1016/j.jadohealth.2010.01.016.
Results Reference
background
PubMed Identifier
22018560
Citation
Haupt RM, Sings HL. The efficacy and safety of the quadrivalent human papillomavirus 6/11/16/18 vaccine gardasil. J Adolesc Health. 2011 Nov;49(5):467-75. doi: 10.1016/j.jadohealth.2011.07.003. Epub 2011 Sep 9.
Results Reference
background
PubMed Identifier
24108159
Citation
Arnheim-Dahlstrom L, Pasternak B, Svanstrom H, Sparen P, Hviid A. Autoimmune, neurological, and venous thromboembolic adverse events after immunisation of adolescent girls with quadrivalent human papillomavirus vaccine in Denmark and Sweden: cohort study. BMJ. 2013 Oct 9;347:f5906. doi: 10.1136/bmj.f5906.
Results Reference
background
PubMed Identifier
25562266
Citation
Scheller NM, Svanstrom H, Pasternak B, Arnheim-Dahlstrom L, Sundstrom K, Fink K, Hviid A. Quadrivalent HPV vaccination and risk of multiple sclerosis and other demyelinating diseases of the central nervous system. JAMA. 2015 Jan 6;313(1):54-61. doi: 10.1001/jama.2014.16946.
Results Reference
background
PubMed Identifier
24013368
Citation
Ojha RP, Jackson BE, Tota JE, Offutt-Powell TN, Singh KP, Bae S. Guillain-Barre syndrome following quadrivalent human papillomavirus vaccination among vaccine-eligible individuals in the United States. Hum Vaccin Immunother. 2014;10(1):232-7. doi: 10.4161/hv.26292. Epub 2013 Sep 6.
Results Reference
background
PubMed Identifier
23027469
Citation
Klein NP, Hansen J, Chao C, Velicer C, Emery M, Slezak J, Lewis N, Deosaransingh K, Sy L, Ackerson B, Cheetham TC, Liaw KL, Takhar H, Jacobsen SJ. Safety of quadrivalent human papillomavirus vaccine administered routinely to females. Arch Pediatr Adolesc Med. 2012 Dec;166(12):1140-8. doi: 10.1001/archpediatrics.2012.1451.
Results Reference
background
PubMed Identifier
17531764
Citation
Pedersen C, Petaja T, Strauss G, Rumke HC, Poder A, Richardus JH, Spiessens B, Descamps D, Hardt K, Lehtinen M, Dubin G; HPV Vaccine Adolescent Study Investigators Network. Immunization of early adolescent females with human papillomavirus type 16 and 18 L1 virus-like particle vaccine containing AS04 adjuvant. J Adolesc Health. 2007 Jun;40(6):564-71. doi: 10.1016/j.jadohealth.2007.02.015.
Results Reference
background
PubMed Identifier
17484215
Citation
Reisinger KS, Block SL, Lazcano-Ponce E, Samakoses R, Esser MT, Erick J, Puchalski D, Giacoletti KE, Sings HL, Lukac S, Alvarez FB, Barr E. Safety and persistent immunogenicity of a quadrivalent human papillomavirus types 6, 11, 16, 18 L1 virus-like particle vaccine in preadolescents and adolescents: a randomized controlled trial. Pediatr Infect Dis J. 2007 Mar;26(3):201-9. doi: 10.1097/01.inf.0000253970.29190.5a.
Results Reference
background
PubMed Identifier
23324976
Citation
Baandrup L, Blomberg M, Dehlendorff C, Sand C, Andersen KK, Kjaer SK. Significant decrease in the incidence of genital warts in young Danish women after implementation of a national human papillomavirus vaccination program. Sex Transm Dis. 2013 Feb;40(2):130-5. doi: 10.1097/OLQ.0b013e31827bd66b.
Results Reference
background
PubMed Identifier
23599298
Citation
Ali H, Donovan B, Wand H, Read TR, Regan DG, Grulich AE, Fairley CK, Guy RJ. Genital warts in young Australians five years into national human papillomavirus vaccination programme: national surveillance data. BMJ. 2013 Apr 18;346:f2032. doi: 10.1136/bmj.f2032. Erratum In: BMJ. 2013;346:F2942.
Results Reference
background
PubMed Identifier
23506489
Citation
Ali H, Guy RJ, Wand H, Read TR, Regan DG, Grulich AE, Fairley CK, Donovan B. Decline in in-patient treatments of genital warts among young Australians following the national HPV vaccination program. BMC Infect Dis. 2013 Mar 18;13:140. doi: 10.1186/1471-2334-13-140.
Results Reference
background
PubMed Identifier
25055186
Citation
Elam-Evans LD, Yankey D, Jeyarajah J, Singleton JA, Curtis RC, MacNeil J, Hariri S; Immunization Services Division, National Center for Immunization and Respiratory Diseases; Centers for Disease Control and Prevention (CDC). National, regional, state, and selected local area vaccination coverage among adolescents aged 13-17 years--United States, 2013. MMWR Morb Mortal Wkly Rep. 2014 Jul 25;63(29):625-33.
Results Reference
background
PubMed Identifier
20838362
Citation
Brewer NT, Gottlieb SL, Reiter PL, McRee AL, Liddon N, Markowitz L, Smith JS. Longitudinal predictors of human papillomavirus vaccine initiation among adolescent girls in a high-risk geographic area. Sex Transm Dis. 2011 Mar;38(3):197-204. doi: 10.1097/OLQ.0b013e3181f12dbf.
Results Reference
background
PubMed Identifier
21288799
Citation
Guerry SL, De Rosa CJ, Markowitz LE, Walker S, Liddon N, Kerndt PR, Gottlieb SL. Human papillomavirus vaccine initiation among adolescent girls in high-risk communities. Vaccine. 2011 Mar 9;29(12):2235-41. doi: 10.1016/j.vaccine.2011.01.052. Epub 2011 Feb 1.
Results Reference
background
PubMed Identifier
24844150
Citation
Donahue KL, Stupiansky NW, Alexander AB, Zimet GD. Acceptability of the human papillomavirus vaccine and reasons for non-vaccination among parents of adolescent sons. Vaccine. 2014 Jun 30;32(31):3883-5. doi: 10.1016/j.vaccine.2014.05.035. Epub 2014 May 18.
Results Reference
background
PubMed Identifier
22729660
Citation
Kester LM, Zimet GD, Fortenberry JD, Kahn JA, Shew ML. A national study of HPV vaccination of adolescent girls: rates, predictors, and reasons for non-vaccination. Matern Child Health J. 2013 Jul;17(5):879-85. doi: 10.1007/s10995-012-1066-z.
Results Reference
background
PubMed Identifier
21924315
Citation
Vadaparampil ST, Kahn JA, Salmon D, Lee JH, Quinn GP, Roetzheim R, Bruder K, Malo TL, Proveaux T, Zhao X, Halsey N, Giuliano AR. Missed clinical opportunities: provider recommendations for HPV vaccination for 11-12 year old girls are limited. Vaccine. 2011 Nov 3;29(47):8634-41. doi: 10.1016/j.vaccine.2011.09.006. Epub 2011 Sep 14.
Results Reference
background
Citation
Evans, G. and A. Bostrom, The evolution of vaccine risk communication in the United States: 1982-2002, in Jordan report 20th anniversary: Accelerated development of vaccines 2002, A. National Institute of and D. Infectious, Editors. 2002, U.S. Department of Health and Human Services, National Institute of Allergy and Infectious Diseases: Washington, D.C. p. 58-71.
Results Reference
background
PubMed Identifier
17673339
Citation
Esposito S, Bosis S, Pelucchi C, Begliatti E, Rognoni A, Bellasio M, Tel F, Consolo S, Principi N. Pediatrician knowledge and attitudes regarding human papillomavirus disease and its prevention. Vaccine. 2007 Aug 29;25(35):6437-46. doi: 10.1016/j.vaccine.2007.06.053. Epub 2007 Jul 16.
Results Reference
background
PubMed Identifier
20354417
Citation
Schnatz PF, Humphrey K, O'Sullivan DM. Assessment of the perceptions and administration of the human papillomavirus vaccine. J Low Genit Tract Dis. 2010 Apr;14(2):103-7. doi: 10.1097/LGT.0b013e3181b240ca.
Results Reference
background
PubMed Identifier
16310136
Citation
Kahn JA. Vaccination as a prevention strategy for human papillomavirus-related diseases. J Adolesc Health. 2005 Dec;37(6 Suppl):S10-6. doi: 10.1016/j.jadohealth.2005.08.018.
Results Reference
background
PubMed Identifier
20885162
Citation
Ko EM, Missmer S, Johnson NR. Physician attitudes and practice toward human papillomavirus vaccination. J Low Genit Tract Dis. 2010 Oct;14(4):339-45. doi: 10.1097/LGT.0b013e3181dca59c.
Results Reference
background
PubMed Identifier
23958768
Citation
Carroll AE, Bauer NS, Dugan TM, Anand V, Saha C, Downs SM. Use of a computerized decision aid for ADHD diagnosis: a randomized controlled trial. Pediatrics. 2013 Sep;132(3):e623-9. doi: 10.1542/peds.2013-0933. Epub 2013 Aug 19.
Results Reference
background
PubMed Identifier
22744960
Citation
Carroll AE, Biondich P, Anand V, Dugan TM, Downs SM. A randomized controlled trial of screening for maternal depression with a clinical decision support system. J Am Med Inform Assoc. 2013 Mar-Apr;20(2):311-6. doi: 10.1136/amiajnl-2011-000682. Epub 2012 Jun 28.
Results Reference
background
PubMed Identifier
21672910
Citation
Carroll AE, Biondich PG, Anand V, Dugan TM, Sheley ME, Xu SZ, Downs SM. Targeted screening for pediatric conditions with the CHICA system. J Am Med Inform Assoc. 2011 Jul-Aug;18(4):485-90. doi: 10.1136/amiajnl-2011-000088.
Results Reference
background
PubMed Identifier
24530401
Citation
Fu LY, Bonhomme LA, Cooper SC, Joseph JG, Zimet GD. Educational interventions to increase HPV vaccination acceptance: a systematic review. Vaccine. 2014 Apr 7;32(17):1901-20. doi: 10.1016/j.vaccine.2014.01.091. Epub 2014 Feb 14.
Results Reference
background
PubMed Identifier
25455116
Citation
Mayne SL, duRivage NE, Feemster KA, Localio AR, Grundmeier RW, Fiks AG. Effect of decision support on missed opportunities for human papillomavirus vaccination. Am J Prev Med. 2014 Dec;47(6):734-44. doi: 10.1016/j.amepre.2014.08.010. Epub 2014 Nov 18.
Results Reference
background
PubMed Identifier
23650297
Citation
Fiks AG, Grundmeier RW, Mayne S, Song L, Feemster K, Karavite D, Hughes CC, Massey J, Keren R, Bell LM, Wasserman R, Localio AR. Effectiveness of decision support for families, clinicians, or both on HPV vaccine receipt. Pediatrics. 2013 Jun;131(6):1114-24. doi: 10.1542/peds.2012-3122. Epub 2013 May 6.
Results Reference
background
PubMed Identifier
25448095
Citation
Perkins RB, Zisblatt L, Legler A, Trucks E, Hanchate A, Gorin SS. Effectiveness of a provider-focused intervention to improve HPV vaccination rates in boys and girls. Vaccine. 2015 Feb 25;33(9):1223-9. doi: 10.1016/j.vaccine.2014.11.021. Epub 2014 Nov 24.
Results Reference
background
PubMed Identifier
23785124
Citation
Markowitz LE, Hariri S, Lin C, Dunne EF, Steinau M, McQuillan G, Unger ER. Reduction in human papillomavirus (HPV) prevalence among young women following HPV vaccine introduction in the United States, National Health and Nutrition Examination Surveys, 2003-2010. J Infect Dis. 2013 Aug 1;208(3):385-93. doi: 10.1093/infdis/jit192. Epub 2013 Jun 19.
Results Reference
background
PubMed Identifier
23732252
Citation
Zimet GD, Rosberger Z, Fisher WA, Perez S, Stupiansky NW. Beliefs, behaviors and HPV vaccine: correcting the myths and the misinformation. Prev Med. 2013 Nov;57(5):414-8. doi: 10.1016/j.ypmed.2013.05.013. Epub 2013 May 31.
Results Reference
background
PubMed Identifier
19588323
Citation
Shojania KG, Jennings A, Mayhew A, Ramsay CR, Eccles MP, Grimshaw J. The effects of on-screen, point of care computer reminders on processes and outcomes of care. Cochrane Database Syst Rev. 2009 Jul 8;2009(3):CD001096. doi: 10.1002/14651858.CD001096.pub2.
Results Reference
background
PubMed Identifier
15595944
Citation
Greenhalgh T, Robert G, Macfarlane F, Bate P, Kyriakidou O. Diffusion of innovations in service organizations: systematic review and recommendations. Milbank Q. 2004;82(4):581-629. doi: 10.1111/j.0887-378X.2004.00325.x.
Results Reference
background
PubMed Identifier
19664226
Citation
Damschroder LJ, Aron DC, Keith RE, Kirsh SR, Alexander JA, Lowery JC. Fostering implementation of health services research findings into practice: a consolidated framework for advancing implementation science. Implement Sci. 2009 Aug 7;4:50. doi: 10.1186/1748-5908-4-50.
Results Reference
background
PubMed Identifier
15360800
Citation
Anand V, Biondich PG, Liu G, Rosenman M, Downs SM. Child Health Improvement through Computer Automation: the CHICA system. Stud Health Technol Inform. 2004;107(Pt 1):187-91.
Results Reference
background
PubMed Identifier
22508925
Citation
Anand V, Carroll AE, Downs SM. Automated primary care screening in pediatric waiting rooms. Pediatrics. 2012 May;129(5):e1275-81. doi: 10.1542/peds.2011-2875. Epub 2012 Apr 16.
Results Reference
background
PubMed Identifier
16779000
Citation
Biondich PG, Downs SM, Anand V, Carroll AE. Automating the recognition and prioritization of needed preventive services: early results from the CHICA system. AMIA Annu Symp Proc. 2005;2005:51-5.
Results Reference
background
PubMed Identifier
12463818
Citation
Downs SM, Uner H. Expected value prioritization of prompts and reminders. Proc AMIA Symp. 2002:215-9.
Results Reference
background
PubMed Identifier
18998823
Citation
Downs SM, Zhu V, Anand V, Biondich PG, Carroll AE. The CHICA smoking cessation system. AMIA Annu Symp Proc. 2008 Nov 6;2008:166-70.
Results Reference
background
Citation
Bauer, N.S., et al., Computer Decision Support to Improve Autism Screening and Care in Community Pediatric Clinics. Infants & Young Children, 2013. 26(4): p. 306-317.
Results Reference
background
Citation
Denzin, N.K. and Y.S. Lincoln, The Sage handbook of qualitative research. Vol. 4th. 2011, Thousand Oaks, CA: Sage.
Results Reference
background
Citation
Braun, V. and V. Clarke, Using thematic analysis in psychology. Qualitative Research in Psychology, 2006. 3: p. 77-101.
Results Reference
background
PubMed Identifier
26625475
Citation
Fleiss JL, Tytun A, Ury HK. A simple approximation for calculating sample sizes for comparing independent proportions. Biometrics. 1980 Jun;36(2):343-6.
Results Reference
background
PubMed Identifier
31201057
Citation
Wilkinson TA, Dixon BE, Xiao S, Tu W, Lindsay B, Sheley M, Dugan T, Church A, Downs SM, Zimet G. Physician clinical decision support system prompts and administration of subsequent doses of HPV vaccine: A randomized clinical trial. Vaccine. 2019 Jul 18;37(31):4414-4418. doi: 10.1016/j.vaccine.2019.05.004. Epub 2019 Jun 11.
Results Reference
derived
Learn more about this trial
HPV Vaccination: Evaluation of Reminder Prompts for Doses 2 & 3
We'll reach out to this number within 24 hrs