Results 261 to 270 of about 93,002 (309)
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Carryover Bias in Clinical Investigations
The Journal of Clinical Pharmacology, 1993If the effect of a treatment continues after the treatment is withdrawn then the response to a second treatment may well be due in part to the previous treatment. This, so called, carryover effect may bias any type of study in which subjects are tested more than once. Crossover studies can be routinely checked for this bias.
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Carryover Effects in Sibling Comparison Designs
Epidemiology, 2016A convenient way of dealing with confounding is the sibling comparison design, where the outcome in exposed individuals is compared with the outcome in their unexposed siblings. The standard analysis of sibling comparison designs assumes that the exposure and outcome of an individual do not affect the exposure and outcome of his/her siblings, sometimes
Arvid, Sjölander +4 more
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The Quarterly Journal of Economics, 1936
Speculation upon the supply, and upon the demand, 436.— Definition of the carryover, 436.— The demand curve, 438.— The supply curve, 438.— Yields and the weather, 439.— Price of a short crop, 441. — Of a bumper crop, 441.— The carrying charge, 441.— Effect of speculation on consumption, 442— On production, 442.— Equilibrium in a one-year's operation ...
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Speculation upon the supply, and upon the demand, 436.— Definition of the carryover, 436.— The demand curve, 438.— The supply curve, 438.— Yields and the weather, 439.— Price of a short crop, 441. — Of a bumper crop, 441.— The carrying charge, 441.— Effect of speculation on consumption, 442— On production, 442.— Equilibrium in a one-year's operation ...
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Partial carryover of advertising
Marketing Letters, 1993A model that combines advertising carryover with purchase reinforcement is presented. It accommodates the possibility that certain members of the consumer population rely only on their experience with the product, while others are also affected by past advertising.
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Testing Crossover Studies for Carryover Effects
Angiology, 1989For the study of cardiovascular disease, for instance, hypertension and angina pectoris, properly de signed crossover studies are to be preferred over parallel-design stud ies. Many statisticians now propose that these studies should always be tested for carryover effects.
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Relevance of EDTA carryover during blood collection
Clinical Chemistry and Laboratory Medicine (CCLM), 2015AbstractThe order of draw is regarded as a preanalytical issue to prevent carryover of additives during blood collection. Our objective was to prove the theory of ethylenediaminetetraacetic acid (EDTA) carryover for a closed vacuum system and the influence of EDTA on concentrations of selected biomarkers.To test the carryover of EDTA, a blood ...
Janne, Cadamuro +5 more
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Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing: Industry Track, 2022
Prashan Wanigasekara +9 more
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Prashan Wanigasekara +9 more
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Nitrogen Carryover from Swine Manure
2005Swine manure or commercial fertilizer had been fall applied for the prior year(s) crop. Late spring soil nitrate tests and crop yield for the current year were collected to determine the value of nitrogen carryover.
Brenneman, L., Van Dee, Kevin
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Carryover and other Frequency Decisions
1998(Minimum) effective frequency is of course used in media planning to calculate the effective reach of the campaign, per advertising cycle. But many campaigns are designed to last beyond the time at which the ad or ads appear, that is, to “carry over.” About the only approach to handling this has been (1979), (1984) concept of Adstock (also Broadbent ...
John R. Rossiter, Peter J. Danaher
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