This study was a part of Dr. Woosung Sohn's dissertation at the University of Michigan, School of Public Health. The authors wish to acknowledge the contribution from the dissertation committee members: Drs. Steve Eklund, MaryFran Sowers, and Xihong Lin in the School of Public Health, and Dr. Amid Ismail in the School of Dentistry.
Fluid Consumption Related to Climate among Children in the United States
Article first published online: 1 MAY 2007
Journal of Public Health Dentistry
Volume 61, Issue 2, pages 99–106, June 2001
How to Cite
Sohn, W., Heller, K. E. and Burt, B. A. (2001), Fluid Consumption Related to Climate among Children in the United States. Journal of Public Health Dentistry, 61: 99–106. doi: 10.1111/j.1752-7325.2001.tb03373.x
- Issue published online: 1 MAY 2007
- Article first published online: 1 MAY 2007
- Manuscript received: 12/6/99; returned to authors for revision: 2/18/00; accepted for publication: 10/2/00.
- fluid consumption;
- water intake;
- fluoride concentration;
- drinking water
Objective: Recommended fluoride concentrations in US public water systems are between 0.7–1.2 ppm, depending on the mean daily maximum temperature. This range assumes that water intake is higher in warmer than in cooler climates, based on research from the 1950s. The aim of this analysis is to relate fluid consumption among American children aged 1–10 years to the local climate under modern conditions. Methods: The quantities of daily total fluid intake per body weight (ml/kg) and plain water intake per body weight (ml/kg) of children were calculated from the 24-hour recall diet survey in the third National Health and Nutrition Examination Survey (NHANES III, 1988–94). The mean daily maximum temperature from 1961 to 1990, averaged for the month during which the NHANES III exam was conducted, was obtained for each survey location from the US Local Climate Historical Database. Multiple regression analysis was conducted using SAS and SUDAAN. Results: Fluid intake was significantly associated with age, sex, socioeconomic status (SES), and race and ethnicity. No significant association could be found between the amount of either total fluid or plain water intake and mean daily maximum temperature, either before and after controlling for sex, age, SES, and race or ethnicity. Conclusions: Results indicate that there is no evidence that fluid consumption among children is significantly related to mean temperature in modern conditions. This suggests that the national temperature-related guidelines for fluoride concentration in drinking water may be due for reevaluation.