Clippings of Taxus canadensis were collected and divided into needles, twigs and whole clippings samples. The biomass was extracted and analysed for taxanes using high performance liquid chromatography. The addition of n-octylbenzamide as an internal standard was found to reduce the standard deviati
Analysis of Trends in Proportions with an Ordinally Scaled Determinant
β Scribed by Dr. M. Nurminen
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 486 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0323-3847
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β¦ Synopsis
In the paper the analpeie of eeveral proportions in a comparative etody eetting is diacuaeed. The c ~8 8 of -ordinal grouping variatee is conaidered. F atetietiare formulated to teat for trend in the proportione over the ecored valuea of the determinant vanate. The null chi-eqnare or F (t EqUare) fUCtiOM are pmwnted eeparately for the unetratified and etratified analyeie, and in either eituation the oomeponding funotione with angular tramformed proportione are ale0 expreeeed. Generalizationrto deal with the parametere in the nonnull range are outlined. Throughout, the intimate relation between the presented dtietiae and etsndard methode ie pointed out.
π SIMILAR VOLUMES
Contemporary information on the trends and patterns of mortality associated with birth defects and genetic diseases is lacking in the United States. To study these trends and patterns, we used the Multiple-Cause Mortality Files of the National Center for Health Statistics. From 1979 through 1992, 32