Physicians' immunization knowledge, attitudes, and practices: a valid and internally consistent measurement tool

A systematic review of measures of healthcare workers' vaccine confidence

Healthcare workers (HCW) perceptions toward vaccines influence patient and community vaccine decision making. In an era of rising vaccine hesitancy, understanding HCW vaccine confidence is critical. This systematic review aims to review instruments that have been validated to measure HCW vaccine confidence. We conducted a search in five databases in June 2023. Data was descriptively synthesized. Twelve articles describing 10 different tools were included. Most tools included dimensions or items on vaccine knowledge (n = 9), safety (n = 8), vaccine usefulness (n = 8), recommendation behavior (n = 8), and self-vaccination practice (n = 7). All, except one study, were conducted in high-income countries. There was variability in the quality of the validation process. There is limited existing literature on development and validation of tools for HCW vaccine confidence. Based on the tools currently available, the Pro-VC-Be tool is the most well validated. Further research needs to include low- and middle-income contexts.

Identifying Perceived Barriers to Human Papillomavirus Vaccination as a Preventative Strategy for Cervical Cancer in Nigeria

Background:

Cervical cancer deaths are disproportionately higher in developing countries depicting one of the most profound health disparities existing today and is ranked as the second most frequent cancer among women in Nigeria. The Human Papillomavirus (HPV) vaccine as a primary prevention strategy is not widely used in Nigeria. This study investigated perceived barriers to HPV vaccination in a Nigerian community, targeting health workers’ perceptions.

Methods:

This descriptive study captured responses from a cross-sectional, convenience sample of adult health workers within Anambra State, Nigeria. An anonymous 42-item survey with multiple validated scales was developed based on the Theory of Planned Behavior model and previous studies. The self-administered survey was distributed by research assistants at study sites within Anambra State which were identified through local constituents by the regional zones Adazi-Ani, Onitsha, and Awka. Data analyses were performed using Microsoft Excel for descriptive statistics and R software for the logistic regression, with a statistical significance level of 5%. Subgroup analysis was performed for the baseline knowledge questionnaire to determine if there were any differences in correct responses based on demographics such as: Institution type, profession, age, sex, religion and parental status.

Results:

Responses were collected from 137 Nigerian health workers; 44% nurses, 14% physicians, 6% pharmacists and 31% other health workers. The majority of respondents were female (69%), between 18 and 39 years of age (78%), from urban settings (82%), and identified as having Christian religious beliefs (97%). The most significant barriers identified were lack of awareness (39%), vaccine availability (39%), and cost (13%). When asked baseline knowledge questions regarding HPV, females were more likely to answer incorrectly as compared to males. Significant differences were found for statements: (1) HPV is sexually transmitted (p = 0.008) and (2) HPV is an infection that only affects women (p = 0.004).

Conclusions:

Perceived barriers to HPV vaccination identified by Nigerian health workers include lack of awareness, vaccine availability/accessibility, cost, and concerns about acceptability. Ongoing efforts to subsidize vaccine costs, campaigns to increase awareness of HPV vaccine, and interventions to improve attainability could advance administration rates in Nigeria, and ultimately improve death rates due to cervical cancer in this population.

How French physicians manage with a future change in the primary vaccination of infants against diphtheria, tetanus, pertussis and poliomyelitis? A qualitative study with focus groups

Background

As in other European countries, the French vaccination schedule changes according to epidemiological and socio-economic situations. Further changes are planned for 2013, including the withdrawal of one dose for primary vaccination against diphtheria, tetanus, polio, pertussis and Haemophilus influenzae. A partnership between the French Technical Vaccination Committee and the French Institute for Health and Medical Research designed a study to assess primary care physicians’ agreement about this modification.

Methods

Qualitative study with focus groups and semi-structured interviews in France. Four focus groups were conducted with physicians, supplemented by four individual interviews.

Results

The physicians of the survey had accepted the suggested vaccination schedule well. A few concerns had been underlined: fear of less follow-up care for infants resulting from the removal of one visit driven by the primary vaccination; fear of loss of vaccine efficacy; suspicion of the existence of financial arguments at the origin of this change; and adjustment to current vaccination schedule. Several suggestions were made: providing strong support from health authorities; developing stable and simple recommendations; providing effective tools for monitoring patient’s vaccination status.

Conclusions

Physicians’ opinions suggested a good acceptance of a possible change about primary vaccination against diphtheria, tetanus, polio, pertussis and Haemophilus influenzae. Physicians’ suggestions resulted from this qualitative study on a new vaccination schedule. It showed how that their involvement was feasible for preparing the implementation of a new vaccination schedule.

Obstetrical Healthcare Personnel's Attitudes and Perceptions on Maternal Vaccination with Tetanus-Diphtheria-Acellular Pertussis and Influenza

Objectives. To assess perceptions of obstetrical healthcare personnel (HCP) regarding routine delivery of Tdap and influenza vaccines to pregnant and postpartum women and identify perceived barriers to vaccination. Methods. Anonymous Web-based survey of obstetricians and nurses caring for pregnant and/or postpartum women. Results. We contacted 342 HCP and received 163 (48%) completed surveys (33/142 (23%) obstetricians, 130/200 (65%) nurses). Among obstetricians, 72% and 63% thought it was “beneficial” to immunize postpartum women against influenza and pertussis, respectively. Only 8% reported vaccinating >75% of pregnant women in their care against influenza. Similarly, <1% of obstetricians reported vaccinating against pertussis. Of all HCP surveyed, 92% and 58% were familiar with ACIP recommendations for influenza and pertussis, respectively. Reported perceived barriers included patient refusal to be vaccinated, reimbursement difficulties, and discomfort in providing vaccine education. Ninety-four percent of respondents agreed that standing orders would be helpful to ensure postpartum vaccination. Conclusions. HCP were less familiar with ACIP recommendations for Tdap compared to influenza vaccines. Substantial discrepancy existed between perceived benefit of vaccination and reported immunization practices. Most identified barriers could be addressed with provider training; however, other barriers require review and changes in systematic policies related to vaccine reimbursement.

Race, ethnicity and income as factors for HPV vaccine acceptance and use

If distributed equitably, Human Papillomavirus (HPV) vaccines have the potential to reduce racial disparities in HPV-related diseases and cervical cancers. However, current trends in the US indicate low uptake among all adolescents, with persistent disparities among minority and low-income adolescents despite largely positive views of vaccination among their parents. As Black, Hispanic, and Asian populations continue to grow in the US over the next 40 y, it is imperative that we not only improve HPV vaccination rates overall, but focus on high-risk populations to prevent an increase in cervical cancer disparities. This review discusses initiation and completion rates of the three-dose HPV vaccine series among adolescents in high-risk groups and describes cultural similarities and differences in motivation and barriers to vaccination. The goal of this review is to highlight factors leading to vaccination in different adolescent racial groups and to help guide the development of strategies to increase rates of vaccine initiation and completion among groups at the highest risk for developing cervical cancer.

Determinants of parents' decision to vaccinate their children against rotavirus: results of a longitudinal study

Rotavirus disease is a common cause of health care utilization and almost all children are affected by the age of 5 years. In Canada, at the time of this survey (2008-09), immunization rates for rotavirus were <20%. We assessed the determinants of a parent's acceptance to have their child immunized against rotavirus. The survey instruments were based on the Theory of Planned Behavior. Data were collected in two phases. In all, 413 and 394 parents completed the first and second interviews, respectively (retention rate 95%). Most parents (67%) intended to immunize their child against rotavirus. Factors significantly associated with parental intentions (Phase 1) were as follows: perception of the moral correctness of having their child immunized (personal normative belief) and perception that significant others will approve of the immunization behavior (subjective norm), perceived capability of having their child immunized (perceived behavioral control) and household income. At Phase 2, 165 parents (42%) reported that their child was immunized against rotavirus. The main determinant of vaccination behavior was parental intention to have their child vaccinated, whereas personal normative beliefs influenced both intention and behavior. The acceptability of the rotavirus vaccine will be higher if health promotion addresses parental knowledge, attitudes and beliefs regarding the disease and the vaccine.

Influence of health providers on pediatrics' immunization rate

To identify the immunization providers' characteristics associated with immunization rate in children younger than 2 years. A cohort and a cluster sampling design were implemented; 528 children between 18 and 70 months of age were sampled in five public health clinics in Mosul-Iraq. Providers' characterizations were obtained. Immunization rate for the children was assessed. Risk factors for partial immunization were explored using both bivariate analyses and multi-level logistic regression models. Less than half of the children had one or more than one missed dose, considered as partial immunization cases. The study found significant association of immunization rate with provider's type. Two factors were found that strongly impacted on immunization rate in the presence of other factors: birthplace and immunization providers' type.

An exploratory qualitative assessment of factors influencing childhood vaccine providers' intention to recommend immunization in the Netherlands

Background

Under the Dutch national immunization program (NIP), childhood vaccination is not mandatory, but its recommendation by childhood vaccine providers (CVP) is important for maintaining high vaccination coverage. We therefore examined factors related to providers' intentions to recommend vaccinations to parents of young children.

Methods

We conducted four focus group discussions with nurses and physicians who provide vaccines to children 0-4 years old in diverse regions of the Netherlands. Three groups represented CVPs at child welfare centers (CWCs) serving the general population, with the fourth representing anthroposophical CWCs. Elements of the Theory of Planned Behaviour (TPB) were used to design the groups; thematic analysis was used to structure and analyze the dataset.

Results

Four main themes emerged, including 1) perceived responsibility: to promote vaccines and discuss pros and cons with parents (although this was usually not done if parents readily accepted the vaccination); 2) attitudes toward the NIP: mainly positive, but doubts as to NIP plans to vaccinate against diseases with a low perceived burden; 3) organizational factors: limited time and information can hamper discussions with parents; 4) relationship with parents: crucial and based mainly on communication to establish trust. Compared to CVPs at standard CWCs, the anthroposophical CWCs spent more time communicating and were more willing to adapt the NIP to individual cases.

Conclusions

Our qualitative assessment provides an overview of beliefs associated with providers' intention to recommend vaccinations. They were motivated to support the NIP, but their intentions to recommend vaccinations were affected by the perceived relevance of the vaccines, practical issues like limited time and by certain types of resistant parents. These results will inform future studies to test the magnitude and relative impact of these factors.

Human papillomavirus vaccination recommendation may be linked to reimbursement: a survey of Virginia family practitioners and gynecologists

OBJECTIVE

Concerns have been raised about gynecologists as vaccinators. This survey evaluated use of the human papillomavirus (HPV) vaccine, attitudes, and barriers among gynecologists and family practitioners for differences between the 2 specialties.

DESIGN

A cross-sectional survey was conducted using a 50-item, self-administered questionnaire mailed to participants.

SETTING

The study was conducted in Virginia through the University of Virginia Center for Survey Research.

PARTICIPANTS

The questionnaire was mailed to 500 family practitioners and 500 gynecologists.

INTERVENTIONS

The questionnaire asked provider and practice demographics, vaccine practices, knowledge, HPV vaccine attitudes, and barriers to vaccination.

MAIN OUTCOME MEASURES

We compared gynecologists to family practitioners for the outcome of offering HPV vaccination. Logistic regression was performed to determine factors associated with providers choosing to offer and recommend the HPV vaccine.

RESULTS

After exclusion of ineligible physicians, 385 of 790 doctors responded (48.7%). Seventy percent of family practitioners and 73.5% of gynecologists currently offer the HPV vaccine. There were no significant differences in demographics or practice patterns between the specialties. The most frequent barrier to vaccination reported by both groups was reimbursement. In multivariate logistic regression, inadequate reimbursement was negatively associated with offering the HPV vaccine (odds ratio [OR] 0.41; 95% confidence interval [CI] 0.15-1.1) and with recommending the vaccine to patients (OR 0.45; 95% CI 0.26-0.76). Experience treating HPV- related disease was positively associated with offering the HPV vaccine (OR 2.3; 95% CI 1.1-4.8).

CONCLUSIONS

Gynecologists are providing HPV vaccination at rates similar to family practitioners. Reimbursement concerns may negatively have an impact on doctors' recommendation of the HPV vaccine.

Increasing influenza vaccination coverage in recommended population groups in Europe

The clinical and economic burden of seasonal influenza is frequently underestimated. The cornerstone of controlling and preventing influenza is vaccination. National and international guidelines aim to implement immunization programs and targeted vaccination-coverage rates, which should help to enhance the vaccine uptake, especially in the at-risk population. This review purposes to highlight the vaccination guidelines and the actual vaccination situation in four target groups (the elderly, people with underlying chronic conditions, healthcare workers and children) from a European point of view.

Physicians' experiences with HPV vaccine delivery: evidence from developing country with multiethnic populations

Physicians' experiences in providing human papillomavirus (HPV) immunization were assessed by mailed questionnaire. Response rate of 41.4% was achieved. Malay Muslim physicians were more likely to agree that cultural sensitivity is an issue when recommending HPV vaccines. Pediatricians and family physicians were more likely to agree that acceptance is better if vaccines were recommended to prevent cervical cancer than to prevent a sexually transmitted disease. Near 70% rated success of HPV vaccines recommendation in their practice as very poor with the majority patients preferred to postpone immunization. Physicians reported cultural disparities in vaccine uptake and perceived high vaccination cost limits its use.

Pediatricians' intention to recommend human papillomavirus (HPV) vaccines to 11- to 12-year-old girls postlicensing

We surveyed 105 pediatric clinicians following Human papillomavirus (HPV) vaccine licensure to identify factors associated with intention to recommend the vaccine to 11- to 12-year-old girls. Pediatricians who were early adopters of medical technologies had fewer concerns about HPV vaccine safety/efficacy, and who anticipated parental vaccine safety/efficacy concerns reported higher intention to recommend the vaccine.

Factors Influencing Pediatricians' Intention to Recommend Human Papillomavirus Vaccines

OBJECTIVES

The objectives of this qualitative study were to describe the range of pediatricians' attitudes about human papillomavirus (HPV) vaccines and to explore factors influencing their intention to recommend HPV vaccines, extending the findings of previous quantitative studies.

METHODS

A diverse sample of pediatricians participated in semistructured individual interviews to assess attitudes and intentions regarding HPV immunization. Framework analysis was used for qualitative analysis.

RESULTS

The mean age of the 31 participants was 47 years, 17 (55%) were female, 9 (29%) were black, and 4 (13%) were Latino. The efficacy, safety, and potential health impact of vaccination were the primary factors driving participants' decisions about recommending HPV vaccines. Perceived benefits of HPV vaccination included prevention of HPV-related disease and the opportunity to educate adolescents. Perceived barriers included anticipated parental beliefs (eg, parental denial that their child would be at risk) and provider beliefs (eg, reluctance to discuss sexuality with preadolescents). Participants reported high intention to recommend HPV vaccines overall, but intention varied according to patient age, patient gender, and HPV vaccine type. The primary reasons underlying this variation included perceptions about the health impact of vaccination and relevance of HPV vaccines to the provider's patients. The main factors driving intention to recommend HPV vaccines included knowledge, personal and professional characteristics, office procedures, vaccine cost and reimbursement, parental factors, and specific attitudes about HPV vaccination.

CONCLUSIONS

These findings provide a framework for understanding pediatricians' decisions to recommend HPV vaccines and may be used to guide the design of interventions to maximize vaccine recommendations.

Attitudes about human papillomavirus vaccine among family physicians

STUDY OBJECTIVE

Human papillomavirus (HPV) vaccines will soon be available for clinical use, and the effectiveness of vaccine delivery programs will depend largely upon whether providers recommend the vaccine. The objectives of this study were to examine family physicians' attitudes about HPV immunization and to identify predictors of intention to recommend immunization.

DESIGN

Cross-sectional survey instrument assessing provider and practice characteristics, knowledge about HPV, attitudes about HPV vaccination, and intention to administer two hypothetical HPV vaccines.

PARTICIPANTS

Surveys were mailed to a national random sample of 1,000 American Academy of Family Physicians (AAFP) members.

MAIN OUTCOME MEASURE

Intention to administer two hypothetical HPV vaccines (a cervical cancer/genital wart vaccine and a cervical cancer vaccine) to boys and girls of different ages.

RESULTS

One hundred fifty-five surveys (15.5%) were returned and 145 were used in the final sample. Participants reported higher intention to recommend both hypothetical HPV vaccines to girls vs. boys (P < 0.0001) and to older vs. younger adolescents (P < 0.0001). They were more likely to recommend a cervical cancer/genital wart vaccine than a cervical cancer vaccine to boys and girls (P < 0.001). Variables independently associated with intention (P < 0.05) included: female gender of provider, knowledge about HPV, belief that organizations such as the AAFP would endorse vaccination, and fewer perceived barriers to vaccination.

CONCLUSIONS

Female gender, knowledge about HPV, and attitudes about vaccination were independently associated with family physicians' intention to recommend HPV vaccines. Vaccination initiatives directed toward family physicians should focus on modifiable predictors of intention to vaccinate, such as HPV knowledge and attitudes about vaccination.

Pediatricians' intention to administer human papillomavirus vaccine: the role of practice characteristics, knowledge, and attitudes

PURPOSE

The objective of this study was to examine pediatrician characteristics and attitudes associated with intention to recommend two hypothetical human papillomavirus (HPV) vaccines.

METHODS

A survey instrument mailed to a random sample of 1000 pediatricians assessed provider characteristics, HPV knowledge, and attitudes about HPV vaccination. Intention to administer each of two HPV vaccines types (a cervical cancer/genital wart vaccine and a cervical cancer vaccine) to girls and boys of three different ages (11, 14, and 17 years) was assessed. Linear mixed modeling for repeated measures and multivariable linear regression models were performed to identify variables associated with intention to recommend vaccination.

RESULTS

The mean age of participants (n = 513) was 42 years and 57% were female. Participants were more likely to recommend vaccination to girls vs. boys and older vs. younger children, and were more likely to recommend a cervical cancer/genital wart vaccine than a cervical cancer vaccine (p < .0001). Variables independently associated with intention to recommend a cervical cancer/genital wart vaccine were: higher estimate of the percentage of sexually active adolescents in one's practice (beta .084, p = .002), number of young adolescents seen weekly (beta 1.300, p = .015), higher HPV knowledge (beta 1.079, p = .015), likelihood of following the recommendations of important individuals and organizations regarding immunization (beta .834, p = .001), and fewer perceived barriers to immunization (beta -.203, p = .001).

CONCLUSIONS

Vaccination initiatives directed toward pediatricians that focus on modifiable predictors of intention to vaccinate, such as HPV knowledge and attitudes about vaccination, may facilitate adherence to emerging national immunization guidelines.

Barriers to Childhood Immunization: Findings from a Needs Assessment Study

This study examines the current status of immunization among 0-3 year old children in Bakersfield and identifies barriers that prevent families from immunizing their children. A survey research design using a stratified sampling method was employed to collect data from 207 randomly selected English and Spanish speaking households having at least one child between the ages of 0-3 in Bakersfield. The findings reveal that 49% of the parents had no shot cards regarding children's immunization status. However, a significant majority of them immunized their children despite having no records. The most commonly reported consumer related barrier for late immunization was having a sick child followed by lack of parental memory and fear of side effects. The major provider-related barriers included lack of an opening for an appointment with the health care provider, limited clinic hours, and long lines in clinics. Lack of transportation was the single most systemic barrier. These findings suggest that reminder calls, increased transportation, weekend clinics and better rapport with parents can improve the immunization rates in ethnically diverse rural communities.

The price of prevention. cost of recommended activities to improve immunizations

PURPOSE

To calculate the cost structure of a suite of immunization improvement interventions recommended by the Centers for Disease Control and Prevention (CDC).

METHODS

A determination was made of the cost to clinics and agencies that implement a suite of CDC-recommended practice improvement interventions to fully immunize a child for diphtheria-tetanus-attenuated pertussis (DTaP), inactivated poliovirus (IPV), and measles-mumps-rubella (MMR) vaccines. Patient data were collected through chart analysis of 16-month-old children in clinics participating in this study's interventions between May 1997 and August 2000. The study began on October 1, 1996, and was funded for 5 years (until September 30, 2002).

RESULTS

Study calculations suggest that an additional $0.013/per patient per month would be needed to cover these activities.

CONCLUSIONS

Identifiable cost structures are associated with the practice improvement strategies recommended by the CDC. The method of implementation may be as important as the interventions themselves. Present compensation for immunization may not actually cover the cost of service provision, and it is unlikely to cover the costs of practice improvement, as described in this paper.

Provider-staff discrepancies in reported immunization knowledge and practices

BACKGROUND

The purpose of the study was to compare immunization-relevant knowledge, certainty about knowledge, self-efficacy, vested interest, and reported practices of providers and clinical staff in the same clinics.

METHODS

A valid and reliable instrument measuring the aforementioned issues was developed and administered to a sample of 50 providers and 60 members of the clinical staff.

RESULTS

Providers were significantly more knowledgeable than staff (P < 0.001); however, they were not more certain about their knowledge (P = 0.52) nor were they more confident in their capability to properly immunize all children in their practice (P = 0.10). Providers reported lower vested interest in immunizations than clinical staff (P < 0.05). Both groups were equally likely to immunize a child with a cold. Providers were less likely to defer needed immunizations for a 15-month-old child, and they were more likely to administer multiple injections to an 18-month-old (both P < 0.05). Providers were more likely than staff to immunize during acute and chronic illness visits (both P < 0.001), and both groups were equally likely to immunize during preventive visits.

CONCLUSIONS

Discrepancies in reported immunization practices between providers and staff may be a barrier to full immunization.