Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/1593
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Type: Journal article
Title: Medication and dry mouth: Findings from a cohort study of older people
Author: Thomson, W.
Chalmers, J.
Spencer, A.
Slade, G.
Citation: Journal of Public Health Dentistry, 2000; 60(1):12-20
Publisher: AAPHD National Office
Issue Date: 2000
ISSN: 0022-4006
1752-7325
Abstract: <h4>Objectives</h4>The aim of this study was to examine the association between medication exposure and (1) unstimulated whole-salivary flow rate and (2) the severity of xerostomia among older people while adjusting for multiple medication use.<h4>Methods</h4>Data were obtained from participants remaining at the five-year follow-up phase of a cohort study of community-dwelling older South Australians. Medication exposure information was available at baseline and at five years, enabling examination of the effects on dry mouth of long-term exposure to medications. At the five-year follow-up, unstimulated salivary flow was estimated using the spit method, and xerostomia severity was estimated using the 11-item Xerostomia Inventory. Because of the potential difficulties posed by polypharmacy, a two-stage analytical approach was employed: (1) Classification and Regression Tree (CART) analysis was used as an exploratory device to elucidate the relationships among the dependent and independent variables, and (2) linear regression analysis was used as a complementary procedure.<h4>Results</h4>Unstimulated flow rate was lower among individuals who were female or taking antidepressants at both baseline and five years, and higher among smokers or people who were taking hypolipidemic drugs. Xerostomia severity was higher among females, or individuals taking: (1) an anginal at baseline and five years, (2) an anginal without a concomitant betablocker at five years, (3) thyroxine and a diuretic at five years, or (4) antidepressants or antiasthma drugs at both baseline and at five years.<h4>Conclusions</h4>These results suggest that polypharmacy can be accounted for to a certain extent by using CART analysis in conjunction with more conventional approaches; and that the relationship between medications and dry mouth is a complex one, and differs according to which aspect of dry mouth is being examined.
Keywords: Saliva
Humans
Xerostomia
Thyroxine
Adrenergic beta-Antagonists
Antidepressive Agents
Cardiovascular Agents
Diuretics
Anti-Asthmatic Agents
Polypharmacy
Linear Models
Regression Analysis
Cohort Studies
Longitudinal Studies
Follow-Up Studies
Smoking
Sex Factors
Secretory Rate
Aged
Aged, 80 and over
South Australia
Female
Male
Hypolipidemic Agents
DOI: 10.1111/j.1752-7325.2000.tb03286.x
Appears in Collections:Aurora harvest 2
Dentistry publications

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