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A study of the relationship of direc...

Zachry, Woodie Moore, III.

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A study of the relationship of direct-to-consumer advertising to epidemiologic indices.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	A study of the relationship of direct-to-consumer advertising to epidemiologic indices./
作者:	Zachry, Woodie Moore, III.
面頁冊數:	291 p.
附註:	Source: Dissertation Abstracts International, Volume: 61-11, Section: B, page: 5819.
Contained By:	Dissertation Abstracts International61-11B.
標題:	Health Sciences, Pharmacy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9992948
ISBN:	9780493013244

A study of the relationship of direct-to-consumer advertising to epidemiologic indices.
Zachry, Woodie Moore, III.

A study of the relationship of direct-to-consumer advertising to epidemiologic indices. - 291 p.

Source: Dissertation Abstracts International, Volume: 61-11, Section: B, page: 5819.

Thesis (Ph.D.)--The University of Texas at Austin, 2000.

The objectives of this study were to explore the relationships between the amount of expenditure for direct-to-consumer advertising of pharmaceuticals on the following dependent variables related to the advertised pharmaceutical(s): (1) the frequency of people reporting symptoms of the disease treated by the pharmaceutical(s), (2) the frequency of people seeking care for the disease treated by the pharmaceutical(s), (3) the frequency of physicians diagnosing the disease treated by the pharmaceutical(s), (4) the frequency of prescriptions written for the advertised pharmaceutical class, and (5) the frequency of prescriptions written for the advertised pharmaceutical. Two databases were employed to study these relationships: (1) data representing the advertising expenditure by product was provided by Competitive Media Reporting, and (2) data representing the provision of ambulatory care was provided by the National Ambulatory Medical Care Survey. Five therapeutic pharmaceutical classes were analyzed to produce the results of this study: (1) antihypertensives, (2) antihistamines, (3) acid/peptic disorder aids, (4) benign prostatic hypertrophy aids, and (5) hyperlipidemia aids.

ISBN: 9780493013244Subjects--Topical Terms:

1017737
Health Sciences, Pharmacy.

A study of the relationship of direct-to-consumer advertising to epidemiologic indices.
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245 1 2 $a A study of the relationship of direct-to-consumer advertising to epidemiologic indices.
300 $a 291 p.
500 $a Source: Dissertation Abstracts International, Volume: 61-11, Section: B, page: 5819.
500 $a Supervisor: Marvin D. Shepherd.
502 $a Thesis (Ph.D.)--The University of Texas at Austin, 2000.
520 $a The objectives of this study were to explore the relationships between the amount of expenditure for direct-to-consumer advertising of pharmaceuticals on the following dependent variables related to the advertised pharmaceutical(s): (1) the frequency of people reporting symptoms of the disease treated by the pharmaceutical(s), (2) the frequency of people seeking care for the disease treated by the pharmaceutical(s), (3) the frequency of physicians diagnosing the disease treated by the pharmaceutical(s), (4) the frequency of prescriptions written for the advertised pharmaceutical class, and (5) the frequency of prescriptions written for the advertised pharmaceutical. Two databases were employed to study these relationships: (1) data representing the advertising expenditure by product was provided by Competitive Media Reporting, and (2) data representing the provision of ambulatory care was provided by the National Ambulatory Medical Care Survey. Five therapeutic pharmaceutical classes were analyzed to produce the results of this study: (1) antihypertensives, (2) antihistamines, (3) acid/peptic disorder aids, (4) benign prostatic hypertrophy aids, and (5) hyperlipidemia aids.
520 $a Ordinary least squares (OLS) regression was used to test the relationships, and a Durbin Watson statistic was used to test the OLS analyses for serial correlation in the error term. Cochrane Orcutt Autoregressions were used to test relationships where the Durbin Watson statistics led to a rejection of the null of no serial correlation in the OLS error term.
520 $a The following significant monthly relationships were found: patients reporting symptoms of nasal congestion regressed on the amount of advertising expenditure (AAE) for antihistamines (p < 0.001), diagnoses of hyperlipidemia regressed on AAE for hyperlipidemia aids (p = 0.008), medications prescribed for hyperlipidemia aids regressed on AAE for hyperlipidemia aids (p = 0.003), the prescriptions written for Claritin (p = 0.004), Hismanal (p = 0.007), Seldane (p < 0.001), Zantac (p = 0.004), and Zocor (p < 0.001) regressed on their respective AAE for the pharmaceutical class, and finally prescriptions written for Claritin (p = 0.005), Hismanal (p = 0.049), and Zocor (p < 0.001) regressed on their respective AAE for the specific product.
520 $a The results of the analyses suggest that DTCA expenditure does have a relationship to people seeking care, physicians diagnosing, and physician prescribing for certain products, product classes and/or disease states. The details of the relationship, and the reasons for the specificity of the relationships in certain product classes are unclear. More studies should be performed to research the interaction of social, consumer, physician, market, and value based variables on the impact of DTCA on the provision of health care.
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