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European Occupational Health Series : 1994-97; Prevention in Primary Care, Environmental Hazard, Volume 94, Issue 01 Ws01 (S): Microbiological Methodology for Marine Pollution Monitoring

By World Health Organization

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Book Id: WPLBN0000125765
Format Type: PDF eBook
File Size: 0.2 MB
Reproduction Date: 2005

Title: European Occupational Health Series : 1994-97; Prevention in Primary Care, Environmental Hazard, Volume 94, Issue 01 Ws01 (S): Microbiological Methodology for Marine Pollution Monitoring  
Author: World Health Organization
Volume:
Language: English
Subject: Health., Public health, Wellness programs
Collections: Medical Library Collection, World Health Collection
Historic
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Publisher: World Health Organization

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Organization, W. H. (n.d.). European Occupational Health Series : 1994-97; Prevention in Primary Care, Environmental Hazard, Volume 94, Issue 01 Ws01 (S). Retrieved from http://worldpubliclibrary.org/


Description
Medical Reference Publication

Excerpt
A basic feature of the organization of most con- trolled clinical trials is the collection of specified data at fixed intervals. For trials with diseases such as tuberculosis, involving a long period of observation, well-organized clerlcal procedures are essential to ensure that all the requisite data are collected at the appropriate intervals. Although these clerical procedures are relatively simple to initiate, it is usually difficult to maintain precise standards o\,er a period of many months (Taylor, 1968), especially after initial enthusiasm has waned. Clerical procedures are tedious and staff capable of working to a high degree of accuracy will often not tolerate the repetitive nature of the work. Thus, many long-term projects are beset with problems of changing staff or gradually declining standards. In addition, for a trial involving a large number of patients, many hours of routine clerical work are involved each week. The preparation of interim analyses is another time-consuming feature of controlled clinical trials, but they are essential to confirm that none of the study groups is being put to major risk.

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