Accession Number:

AD0658631

Title:

NUMERICAL REQUIREMENTS FOR STATISTICALLY VALID RESULTS IN FIELD TEST OF ACCEPTABILITY OF RATIONS,

Descriptive Note:

Corporate Author:

ARMY MEDICAL RESEARCH LAB FORT KNOX KY

Report Date:

1945-03-24

Pagination or Media Count:

8.0

Abstract:

In short tests 2-3 weeks little accuracy is sacrificed by collecting opinion data only every third or fourth day. In longer tests 2 months no significant accuracy is lost if data are obtained only once a week. Data from the first few days may show more variations than those obtained later on in a 3-week test. Where there are only relatively few items to test, a period long enough for each menu or item to appear only 3 or 4 times will apparently give results little different from those obtained when the test components are used several times as often. If acceptability of rations for weeks or months is desired, it is necessary to test the rations for the entire period but data need be collected no more frequently than 6 or 7 days. From the statistical point of view, groups of at least 2 platoons 60-80 men are needed to give reliable information on the relative acceptability of items in a single ration. For reasons of organization, supply, command, morale and losses from normal attrition, groups of company size 100-150 men are more desirable. Author

Subject Categories:

  • Food, Food Service and Nutrition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE