Changes in Strength of Recommendation and Perceived Barriers to Human Papillomavirus Vaccination: Longitudinal Analysis of Primary Care Physicians, 2008-2018

Association of Maternal Cervical Cancer Screening Adherence with Adolescent HPV Vaccination Among Adolescent-Mother Pairs

Less than two-thirds of US adolescents are up-to-date with HPV vaccination. While mothers engaged in preventive care are more likely to seek preventive care for their children, current studies on associations between maternal cervical cancer screening (CCS) and adolescent HPV vaccination are needed. We assessed associations between maternal preventive service utilization and adolescent HPV vaccination using electronic health record data from a healthcare system in Washington State. We included adolescents (11-17 years) and their mothers with ≥ 1 primary care visit between 2018 and 2020. Outcomes were HPV vaccine initiation and completion. The primary exposure was maternal adherence to guideline-recommended CCS. Secondary exposures were maternal breast cancer screening adherence (for mothers ≥ 52 years) and ≥ 1 wellness visit ≤ 2 years. We used Generalized Estimating Equations to estimate prevalence ratios, and explore effect modification by adolescent sex, adolescent provider characteristics, and maternal language interpreter use. Of 4121 adolescents, 66% had a CCS-adherent mother, 82% initiated HPV vaccination, and 49% completed the series. CCS adherence was associated with higher initiation (adjusted prevalence ratio (APR):1.10, 95%CI:1.06-1.13) and completion (APR:1.16, 95%CI:1.08-1.23). Associations were stronger for male vs. female adolescents, adolescents who had a primary care provider in family practice vs. pediatrics, and adolescents who had the same primary care provider as their mother vs. not. Recent maternal wellness visit was also associated with higher initiation (APR:1.04, 95%CI:1.01-1.07) and completion (APR:1.12, 95%CI:1.05-1.20). Results suggest that delivering healthcare through a family-centered approach and engaging mothers in broad preventive care could increase adolescent HPV vaccination coverage.

Identifying Healthcare Professionals With Lower Human Papillomavirus (HPV) Vaccine Recommendation Quality: A Systematic Review

PURPOSE

Strengthening healthcare professionals' (HCPs) communication is an evidence-based approach to increasing human papillomavirus (HPV) vaccine uptake among adolescents. To better target future interventions, we sought to synthesize evidence on HCP subgroups who most need to improve their HPV vaccine recommendation quality.

METHODS

We searched five databases for quantitative studies published from 2012 to 2022 on HPV vaccine recommendation quality, including recommendation consistency and strength, for United States adolescents. Two coders independently abstracted data from each eligible study, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We summarized variation in recommendation quality by clinical and HCP characteristics.

RESULTS

The 28 eligible studies indicated that relatively low proportions of HCPs used higher-quality recommendation practices (median: 61% across 30 measures) and that recommendation quality varied across HCP subgroups. The most consistent findings were that more pediatric HCPs used higher-quality recommendations than family medicine HCPs (8 of 11 studies, 2-60 percentage point difference) and that HPV-related knowledge was associated with higher recommendation quality (four of seven studies). Most studies observed no differences in recommendation quality by clinical role (e.g., provider vs. nurse) or HCP demographics (e.g., gender, age, race/ethnicity).

DISCUSSION

Studies suggest a substantial need to improve HCPs' recommendation quality, with opportunities for targeting future interventions.

Relationship between religiosity and HPV vaccine initiation and intention in urban black and hispanic parents

OBJECTIVE

Religion is believed to be an important sociocultural influence in the U.S., but little is known about how religiosity shapes the human papillomavirus (HPV) vaccine decision in racial/ethnic minorities. The purpose of this study was to examine the relationship between religiosity and HPV vaccine initiation and intention among urban, racial/ethnic minority parents of adolescents 11-14 years old.

DESIGN

This study employed a descriptive, cross-sectional design using baseline data from Black and Hispanic parents (N = 175 and 285, respectively) recruited from medically underserved communities. Chi-square tests for independence and independent-samples t-tests were run to assess sociodemographic differences in vaccine initiation and vaccine intention. Binary logistic regression analyses were conducted to determine whether religious attendance and religious salience were associated with parents' HPV vaccine decisions for their children.

RESULTS

Approximately 47% of Black parents had vaccinated their youth against HPV. Of those who had not initiated the vaccine for their child, 54% did not intend to do so. 54% of Hispanic parents had initiated the HPV vaccine for their youth. Of those who had not initiated the vaccine for their child, 51% did not intend to do so. Frequency of attendance at religious services and the importance of religion in one's life was not significantly correlated with HPV vaccine decision-making for Black nor Hispanic parents.

CONCLUSION

This study suggests that religiosity does not influence the HPV vaccine decision for urban, Black and Hispanic parents. Future studies using measures that capture the complexity of religion as a social construct are needed to confirm the findings. In addition, studies with representative sampling will enable us to make generalizations about the influence of religion on HPV vaccine decision-making for urban, racial/ethnic minority parents.

Does HPV vaccination initiation at age 9, improve HPV initiation and vaccine series completion rates by age 13?

Vaccination for Human Papillomavirus (HPV) is important to reduce rates of cervical and oropharyngeal cancer. We aimed to evaluate if a program to initiate HPV vaccination at 9 years improved initiation and completion rates by 13 years of age. Data on empaneled patients aged 9-13 years from January 1, 2021 to August 30, 2022 were abstracted from the electronic health record. Primary outcome measures included HPV vaccination initiation and series completion by 13 years of age. The secondary outcome measure was missed opportunities for HPV vaccination. In total, 25,888 patients were included (12,433 pre-intervention, and 13,455 post-intervention). The percentage of patients aged 9-13 with an in-person visit who received at least 1 dose of HPV vaccine increased from 30% pre-intervention to 43% post-intervention. The percentage of patients who received 2 doses of vaccine increased from 19.3% pre-intervention to 42.7% post-intervention. For the overall population seen in-person, initiation of HPV vaccination by age 13 years increased from 42% to 54%. HPV completion increased as well (13% to 18%). HPV vaccination initiation at 9 years of age may be an acceptable and effective approach to improving vaccination rates.

Social processes, practical issues, and COVID-19 vaccination among hesitant adults

INTRODUCTION

The purpose of this study is to examine relationships between COVID-19 vaccination, social processes, and the practical issues of healthcare coverage and workplace requirements. We examine these relationships among individuals who expressed some degree of hesitancy towards receiving the vaccine. Assessing relationships between COVID-19 vaccination, social processes, and practical issues among vaccine-hesitant individuals has implications for public health policy and intervention.

METHODS

We analyzed weighted data from a random sample phone survey of Arkansas adults (N = 2,201) between March 1st and March 28th, 2022 and constrained our analytical sample to those who had reported some degree of vaccine hesitancy (N = 1,251). Statistical analyses included weighted and unweighted descriptive statistics, weighted bivariate logistic regressions, and a weighted multivariate logistic regression to obtain adjusted odds ratios for COVID-19 vaccination.

RESULTS

More than two-thirds (62.5 %) of respondents were vaccinated, despite their hesitancy. Adjusted odds of COVID-19 vaccination were greater among Black (OR = 2.55; 95 % CI[1.63, 3.97]) and Hispanic respondents (OR = 2.46; 95 % CI[1.53, 3.95]), respondents whose healthcare provider recommended vaccination (OR = 2.50; 95 % CI[1.66, 3.77]), and as perceptions of vaccination coverage (OR = 2.04; 95 % CI[1.71, 2.43]) and subjective social status increased (OR = 1.10; 95 % CI[1.01, 1.19]). Adjusted odds of COVID-19 vaccination were greater among respondents with a workplace that recommended (OR = 1.96; 95 % CI[1.03, 3.72]) or required vaccination (OR = 12.62; 95 % CI[4.76, 33.45]) and among respondents who were not employed (OR = 1.82; 95 % CI[1.10, 3.01]) compared to those whose workplace did not recommend or require COVID-19 vaccination.

CONCLUSIONS

Some hesitant individuals become vaccinated despite their hesitancy-a group we refer to as "hesitant adopters." Social processes and practical issues are important correlates of vaccination among those who are hesitant. Workplace requirements appear to be of particular importance for vaccination among hesitant individuals. Provider recommendations, norms, social status, and workplace policies may be effective points of intervention among those who express vaccine hesitancy.

Reimbursement for HPV Vaccine Cost in the Private Sector: A Comparison Across Specialties

The human papillomavirus (HPV) vaccine is the most expensive of all routinely recommended pediatric vaccines. Adequate cost reimbursement by 3rd-party payers is a critical enabling factor for clinicians to continue offering vaccines. This study found that net returns from HPV vaccine cost reimbursements are lowest for family physicians ($0.34/dose) and highest for pediatricians ($5.08/dose). Furthermore, a $1 increment in return was associated with an increase in HPV vaccine doses administered (highest for family physicians; 0.08% per dollar). Reimbursement for HPV vaccine costs by private payers is adequate; however, return margins are small for non-pediatric specialties.

Understanding the Factors Influencing Health Care Provider Recommendations about Adolescent Vaccines: A Proposed Framework

Health care provider recommendations are among the most important factors influencing parents' decisions to vaccinate their adolescents. However, delivery of high-quality health care provider recommendations for vaccination is not universal. There is wide variation in the strength, timeliness and consistency of the delivery of recommendations for all adolescent vaccines. The factors that influence health care providers' recommendations are multi-level and can be conceptualized in much the same way as vaccine acceptance among parents. Health care providers are influenced by their own attitudes and beliefs about a vaccine and also by the patient they are treating and by the community in which they practice as well as state and national level vaccine policy. We propose a multi-level framework for understanding the factors that influence health care providers' recommendations at the individual, interpersonal and community level to both develop and adapt interventions to improve providers' recommendations.

Training Residents and Medical Students to Overcome Parents' Vaccine Hesitancy

Strong provider recommendations increase vaccine confidence. Medical students and pediatric residents, as future physicians, will play an important role in the messaging about vaccines to their parents and patients. The importance of inclusion of vaccine education and communication skills in the medical school curriculum and residency training programs must be recognized to ensure provider confidence in discussions with vaccine-hesitant parents and patients.

Perceptions, Knowledge and Attitudes among Young Adults about Prevention of HPV Infection and Immunization

Introduction: Human papilloma virus (HPV) is one of the most common sexually transmitted infections and is widely known as the main causative agent for cervical cancer. The aim of this study was to investigate the perceptions, knowledge and attitudes of young Greek adults concerning prevention of HPV infection and HPV immunization. Material and Methods: This constitutes a cross-sectional online survey. A convenience sample of young Greek adults (n = 883) residing in Greece, aged 17 to more than 35 years was surveyed from December 2020 to March 2021. Two validated questionnaires were used to collect data. Results: Participants demonstrated moderate knowledge about HPV infection and vaccination, with a mean knowledge score of 53.26 (SD ± 20.65) and 38.92 (SD ± 17.58), respectively. Cronbach’s alpha value was 0.77 and 0.80. Female participants were better informed than males. Approximately 52.3% of respondents had been vaccinated and 65.5% were willing to get vaccinated in the future. Vaccination rate was significantly associated with gender (OR = 11.99; 99% CI = 6.59–21.84), knowledge about the HPV vaccine (OR = 1.04; 99% CI = 1.03–1.04) and age (OR = 0.07; 99% CI = 0.03–0.15). Reasons for vaccine refusal were insufficient information (36.8%) and fear of side effects (19%). Correlates of positive vaccination intention were knowledge about HPV (OR = 1.02; 99% CI = 1.01–1.02). Conclusions: The findings suggest that the Greek government’s continuing HPV promotion efforts and education on the risks of HPV infection among young people are likely to increase vaccination acceptance among this group.

AVPCancerFree: Impact of a digital behavior change intervention on parental HPV vaccine -related perceptions and behaviors

Parent hesitancy contributes to reduced HPV vaccination rates. The HPVcancerfree app (HPVCF) was designed to assist parents in making evidence-based decisions regarding HPV vaccination. This study examined if parents of vaccine-eligible youth (11-12 yrs.) who use HPVCF in addition to usual care demonstrate significantly more positive intentions and attitudes toward HPV vaccination and greater HPV vaccination rates compared to those not using HPVCF. Clinics (n = 51) within a large urban pediatric network were randomly assigned to treatment (HPVCF + usual care) or comparison (usual care only) conditions in a RCT conducted between September 2017 and February 2019. Parents completed baseline and 5-month follow-up surveys. Participant-level analysis determined 1) change in HPV vaccination initiation behavior and related psychosocial determinants and 2) predictors of HPV vaccine initiation. Parents (n = 375) who completed baseline and 5-month follow-up surveys were female (95.2%), 40.8 (±5.8) yrs. married (83.7%), employed (68.3%), college educated (61.9%), and privately insured (76.5%). Between-group analysis of HPVCF efficacy demonstrated that parents assigned to receive HPVCF significantly increased knowledge about HPV and HPV vaccination (p < .05). Parents who accessed content within HPVCF significantly increased knowledge about HPV & HPV vaccine (p < .01) and perceived effectiveness of HPV vaccine (p < .05). Change in HPV vaccine initiation was not significant. A multivariate model to describe predictors of HPV vaccine initiation demonstrated an association with Tdap and MCV vaccination adoption, positive change in perceived effectiveness of the HPV vaccine, and reduction in perceived barriers against HPV vaccination. HPVCF appears to be a feasible adjunct to the education received in usual care visits and reinforces the value of apps to support the important persuasive voice of the health-care provider in overcoming parent HPV vaccine hesitancy.

Analysis of reasons for loss to follow up in a prospective study in Chandigarh, India and impact from telecom changes

Objective

Mobile phones are used in research studies, to enroll and follow-up participants, collect data, and implement mHealth initiatives. We conducted a longitudinal study in a birth cohort, where infants were required to make four scheduled visits by 12 months of age. Families of those failing to attend scheduled follow-up visits, were contacted telephonically to ascertain the reasons, which were categorized as: not interested to continue participating, migrated, phone disconnected due to telecom change, or other reason.

Results

A total of 413 mother-infant dyads were enrolled. The overall attrition was 56%, with majority occurring at the first follow-up visit. This temporally coincided with a telecom service provider announcing strong incentives to switch providers. Attrition monotonically decreased at subsequent visits. The reasons were: moved away (13%), no longer interested (8%), phone disconnected (7%), and multiple other reasons (28%), the majority of whom had unreachable phones. Those who remained in the study and those lost to follow-up were similar on most demographic variables. Among common reasons for attrition in cohort studies, we experienced a new dimension introduced by telecom changes. These findings underscore the need to consider unexpected reasons for attrition in longitudinal studies, and design more robust methods to follow-up participants.