Valuing the delivery of dental care: Heterogeneity in patients’ preferences and willingness-to-pay for dental care attributes

Assessing Patients' Preferences for Preventive Dental Care: A Discrete Choice Experiment

Background It is crucial to recognize patients' behavioral responses to improve oral healthcare delivery. A discrete choice experiment (DCE) is typically used to measure service user preferences. The purpose of this study was to examine the preferences of the Saudi population regarding primary dental care using a DCE. Materials and methods An online DCE survey was distributed among adults aged 18 years and older living in Saudi Arabia. An orthogonal design was used to reduce the number of combinations while maintaining the main effects that reflect patient preferences. Respondents were presented with a reduced set of 10 cards (tasks), and each of the cards had two concepts (offers). Descriptive statistics were used to summarize the sample characteristics. The coefficients were calculated based on discrete choice results on the Qualtrics platform. Results A total of 532 participants completed the survey. Among patients seeking a preventive dental visit, the ability to get an appointment was rated the most important influence on their decision with a relative importance of 41%, followed by the dental care provider (29%) and the dental clinic in relation to the sector and the fees (20%). The least important attribute was the waiting time in minutes, with a relative importance of 10%. Conclusion The study findings revealed that patients make trade-offs when deciding to receive primary dental care. Policymakers can use the study's findings to inform their decisions concerning dental clinic services. The study results suggest that it is possible to improve access to primary dental care by improving the accessibility of appointments.

What Counts for the Old and Oldest Old?-An Analysis of Patient Criteria for Choosing a Dentist-Part I: Awareness and Selection Criteria, Infrastructure, and Dental Office Equipment

Utilization of a dentist is influenced by many factors. The aim of this study is to present the factors relating to how patients become aware of a dentist, according to which criteria they select the dentist, and which factors in the infrastructure, equipment of dental offices, and human interactions are important for patients. A telephone survey with 466 participants (female 59.9%) in three age groups (ag 1: 35−50 years, ag 2: 70−84 years, ag 3: >85 years) in three German cities was conducted. Data were analyzed with respect to age, gender, and place of residence. Hardly any differences in the selection of the dentist and the selection criteria applied were found between the sexes, the age groups, or the places of residence. Recommendation seems to be the major aspect regarding how patients become aware of or select their dentist (n = 278, 65.6%), while modern technologies, e.g., the internet, play a subordinate role (n = 31, 7.3%). The unimportance of modern technologies increases significantly with the increase in age. As age increases, factors such as infrastructure (e.g., elevator available (ANOVA p < 0.001; Bonferoni correction: significant differences between ag 1 and ag 2 p < 0.001, ag 1 and ag 3 p < 0.001, and ag 2 and ag 3 p = 0.009); accessibility by wheelchair (ANOVA p < 0.001; Bonferoni correction: significant differences between ag 1 and ag 2 p = 0.006; and ag 1 and ag 3 p < 0.001); etc.) and dental office equipment become significantly important and influence the choice of dentist, while the importance of good parking facilities significantly decreased with age (ANOVA p = 0.003; Bonferoni correction: significant differences between ag 1 and ag 3 p = 0.004, and ag 2 and ag 3 p = 0.023). With increasing age, e.g., the importance of a television in the waiting room (ANOVA p = 0.012; Bonferoni correction: significant differences between ag 1 and ag 3 p = 0.014; and ag 2 and ag 3 p = 0.011), a modern waiting room (ANOVA p < 0.001; Bonferoni correction: significant differences between ag 1 and ag 3 p < 0.001; and ag 2 and ag 3 p < 0.001) or the possibility to visualize the oral situation on a screen decreases significantly (ANOVA p < 0.001; Bonferoni correction: significant differences between ag 1 and ag 2 p < 0.001; ag 1 and ag 3 p < 0.001, and ag 2 and ag 3 p < 0.001). If dentists want to welcome and treat older people, they should adapt the accessibility, infrastructure and equipment of their practice to the needs of older people in order to be able to guarantee continuous lifelong dental care regardless of the need for assistance or care.

An overview of the methodological aspects and policy implications of willingness-to-pay studies in oral health: a scoping review of existing literature

Background

Demands for dental services seem to be beyond the capacities of most healthcare systems these days. Patient preferences have been increasingly emphasized to be considered in the joint decision-making process. Willingness-to-pay (WTP) is a recommended method for measuring the utility of health services; increasingly being used in recent decades. Taking these points into consideration, this article aims to provide an overview of the methodological aspects and policy implications of WTP studies in the field of oral health.

Methods

The research was conducted in ISPOR, PubMed and Google Scholar databases. In addition, reference lists of included articles were checked to identify the relevant studies. All studies published were included that were in the English language and reported using WTP for oral health-related goods and services. A data-charting form was developed by a focus group discussion panel of seven experts to derive the main methodological aspects of WTP. Also, Core policy suggestions were categorized through thematic content analysis of the included papers.

Results

The search strategy yielded 389 studies of which 52 were included. WTP studies in oral health show an increasing trend in global publications. The UK and Canada have a greater share in published material than in any other country. The dominant field of these researches is in restorative and prosthetic dentistry, and a wide range of different methodological aspects was documented. Policy suggestions were categorized in three main themes: (A) setting new tariffs or subsidizing the item, (B) provision of the item due to population preferences, and (C) improving literacy regarding the item.

Conclusions

An urgent need for a common framework regarding the design of WTP studies in dentistry seems paramount. Some policy suggestions seem not to be applicable, perhaps due to insufficient familiarity of the researchers with the complexities of the public policymaking process.

Reporting Quality of Marginal Rates of Substitution in Discrete Choice Experiments That Elicit Patient Preferences

BACKGROUND

Discrete choice experiments (DCEs) are commonly used to elicit patient preferences as marginal rates of substitution (MRSs) between treatment or health service attributes. Because these studies are increasing in importance, it is vital that uncertainty around MRS estimates is reported.

OBJECTIVE

To review recently published DCE studies that elicit patient preferences in relation to MRS reporting and to explore the accuracy of using other reported information to estimate the uncertainty of the MRSs.

METHODS

A systematic literature review of DCEs conducted with patients between 2014 and July 2019 was performed. The number of studies reporting coefficients, MRSs, standard errors (SEs), and confidence intervals was recorded. If all information was reported, studies were included in an analysis to determine the impact of estimating the SEs of MRSs using coefficients and assuming zero covariance, to determine the impact of this assumption.

RESULTS

Two hundred and thirty-two patient DCEs were identified in the review; 34.1% (n = 79) reported 1 or more MRS and, of these, only 62.0% (n = 49) provided an estimate of the uncertainty. Of these studies, 16 contained enough information for inclusion in the analysis, providing 116 datapoints. Actual SEs were smaller than estimated SEs in 75.0% of cases (n = 87), and estimated SEs were within 25% of the actual SE in 59.5% of cases (n = 69).

CONCLUSION

Uncertainty of MRS estimates is unreported in a substantial proportion of recently published DCE studies. Estimating the SE of a MRS by solely using the SEs of the utility coefficients is likely to lead to biased estimates of the precision of patient trade-offs.

Did expanded access to denture services improve chewing ability in the Korean older population? Results of a regression discontinuity analysis

The Korean National Health Insurance expanded the dental insurance in 2012 to cover denture services for older adults. We analyzed whether the new policy improved of chewing ability in the eligible population. We used regression discontinuity (RD), a quasi-experimental design, to analyze the effects of the expanded dental insurance. We analyzed data from the Korea National Health and Nutrition Examination Survey conducted in 2010 and 2015. The study population consisted of two groups: the treatment group, aged 65 and above who were eligible; and the control group, under 65 years of age who were not eligible for the dental insurance benefit. The main outcome evaluated was self-reported chewing difficulty. The RD analysis showed that in 2015, the chewing difficulty in aged above 65 was 2.2% lower than in those aged under 65. However, the difference was not statistically significant (P = 0.76). The results from the falsification testing of predetermined covariates, placebo cut-offs, and bandwidths validated our main conclusion. The expansion of dental insurance benefits to include dentures for the older adults did not improve the chewing ability in the eligible population. Future studies should evaluate long-term outcomes of oral health as well as the social impacts on the elderly.

Faculty Members' Attitude Toward Establishing a Business Center in the Dental School Clinic, King Saud University

Aims and Objectives

The aim of this study was to evaluate the faculty members' attitude toward establishing a business center in the College of Dentistry, King Saud University, Riyadh, Saudi Arabia.

Materials and Methods

A structured questionnaire comprised three sections: demographic variables such as gender and age, questions regarding the faculty's attitude toward a dental college business center, and a comparison between a business center and private clinics. Statistical analysis was performed to compare the groups with scale response variable; independent t-test, analysis of variance, and factor analysis were also conducted.

Results

The study results show that 43 respondents were men and 26 were women. Twenty respondents were ranked in the position of assistant professor, whereas 38 were ranked as associate professors, and 11 as professors. In total, 88.5% of female faculty members supported the idea of establishing a business center at the dental college, whereas 65% of male faculty members supported the same idea. There is a statistically significant difference among them (P < 0.05). The factor analysis extracted three factors named as "treatment accessibility," "treatment effectiveness," and "treatment cost." The factor loading ranges from 0.652 to 0.867, and altogether they explain 79% of the total data variance.

Conclusion

Our study proved that 65.1% of male and 88.5% of female dental faculty of the college supported the idea of establishing a business center at the dental college as funding is needed to invest in dental education and research programs in order to formulate the next generation of practitioners to serve the population. This study will add to the progress of establishing a business center in dental education and provides the patient with a treatment accessibility and effectiveness in a low-cost budget.

Preferences for Primary Healthcare Services Among Older Adults with Chronic Disease: A Discrete Choice Experiment

PURPOSE

The aim of this study was to quantify the relative importance of the preference heterogeneity of Chinese older adults with chronic disease for primary healthcare service (PHCS) in the hypothetical minor chronic disease scenario.

PATIENTS AND METHODS

A discrete choice experiment (DCE) was administered to the patients aged 60 and above with at least one chronic disease in China. Five DCE attributes were considered, including types of service, treatment options, out-of-pocket (OOP) cost per visit, distance to practice, and the seniority of medical practitioners. DCE data were analysed taking into account of potential preference heterogeneity using both a mixed logit model (MLM) and a latent class logit model (LCLM).

RESULTS

A total of 432 respondents consented to complete the questionnaires and 372 valid respondents were included in analysis. All attributes were significantly influencing respondents' PHCS choice except for the types of service. Significant preference heterogeneity was observed among respondents. Based on the preferred LCLM estimates, four latent classes were identified. The first class (28.8%) valued modern medicine service the most, the second class (17.8%) was dominated by distance to practice, the third class (29%) preferred all the attributes except the types of services and valued TCM service most, the fourth class (24.4%) paid more attention to the types of service. Education, gender, age, income, regions of residence, and status of the chronic condition were found to be associated with latent class memberships.

CONCLUSION

A better understanding of the relative importance of PHCS characteristics is a crucial step for the future policy implementations. The significant preference heterogeneity identified in this study highlights that effective policy interventions should be tailored to different patients' characteristics.