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Research Studies
Study Tracker

Study Tracker

The most up-to-date and comprehensive source for studies on fluoride's multifaceted effects on human and animal health, with 100+ years of research organized by health category, type of study, author, journal, and date.
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Initial nonresponse and survey response mode biases in survey research.

February 23, 2015 | Journal of Public Health Dentistry | Chi DL, Chen CY. | 75(3):169-174
Funders who supported this work. National Institute of Dental and Craniofacial Research (1) U.S. Department of Health and Human Services, NIH National Center for Research Resources (1) Articles referenced by this article (10) The prevalence of dental fear and avoidance: expanded adult and recent adolescent surveys. Gatchel RJ. J Am Dent Assoc, (5):591-593 1989. MED: 2785546 Evaluation of bias and logistics in a survey of adults at increased risk for oral health de

Caregivers who refuse preventive care for their children: the relationship between immunization and topical fluoride refusal.

July 2014 | American Journal of Public Health (AJPH) | Chi DL. | 104(7): 1327–1333.
References 1. Institute of Medicine. Childhood Immunization Schedule and Safety: Stakeholder Concerns, Scientific Evidence, and Future Studies. Washington, DC: National Academies Press; 2013. [PubMed] [Google Scholar] 2. McMahon BJ, Dentinger CM, Bruden D et al. Antibody levels and protection after hepatitis B vaccine: results of a 22-year follow-up study and response to a booster dose. J Infect Dis. 2009;200(9):1390–1396. [PubMed] [Google Scholar] 3. Institute of Medicine. Adverse Effect

Understanding topical fluoride hesitancy and refusal behaviors through the extended parallel process model and health belief model.

March 14, 2022 | Journal of Public Health Dentistry | Leung E, Kerr D, Askelson N, Chi DL. | [Epub ahead of print]
References: 1. Weyant RJ, Tracy SL, Anselmo TT, Beltrán-Aguilar ED, Donly KJ, Frese WA, et al. Topical fluoride for caries prevention: executive summary of the updated clinical recommendations and supporting systematic review. J Am Dent Assoc. 2013;144(11):1279-91. 2. Marinho VCC, Worthington HV, Walsh T, Clarkson JE. Fluoride varnishes for preventing dental caries in children and adolescents. Cochrane Database Syst Rev. 2013;(7):CD002279. 3. Chi DL. Parent refusal of topical fluor

Lithium in Drinking Water as a Public Policy for Suicide Prevention: Relevance and Considerations.

February 17, 2022 | Frontiers in Public Health | Araya P, Martínez C, Barros J. |
Although suicide is considered a major preventable cause of mortality worldwide, we do not have effective strategies to prevent it. Lithium has been consistently associated with lowering risk of suicide. This effect could occur at very low concentrations, such as trace doses of lithium in tap water. Several ecological studies and recent meta-analysis have suggested an inverse association between lithium in water and suicide in the general population, with a lack of knowledge of clinically si