Details
| Original language | English |
|---|---|
| Pages (from-to) | 55-66 |
| Number of pages | 12 |
| Journal | Statistics in Biopharmaceutical Research |
| Volume | 6 |
| Issue number | 1 |
| Publication status | Published - 2 Jan 2014 |
Abstract
When identifying the minimum effective dose (MED) or the lowest observed adverse event level (LOAEL), researchers usually employ multiple comparison procedures (MCPs). The ones preferred are the Dunnett-type difference-to-placebo and ratio-to-control test. In this article, we will use a model selection criterion, namely the generalized order-restricted information criterion (GORIC). The GORIC can evaluate a set of hypotheses regarding the response means directly and simultaneously, where in this case in each hypothesis a different dose is hypothesized to be the MED or LOAEL. It takes different patterns of increasing response with increasing dose into account without pooling response means, whereas MCPs with order restrictions do. The GORIC chooses the best hypothesis of the set leading to the identification of the MED and, depending on the set, to a specific pattern of response means. We will show, by simulation, that the GORIC has advantages in identifying the MED or LOAEL, besides theoretical ones. Supplementary materials for this article are available online.
Keywords
- Analysis of variance, GORIC, LOAEL, MED, Optimal dose, Order restrictions
ASJC Scopus subject areas
- Mathematics(all)
- Statistics and Probability
- Pharmacology, Toxicology and Pharmaceutics(all)
- Pharmaceutical Science
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In: Statistics in Biopharmaceutical Research, Vol. 6, No. 1, 02.01.2014, p. 55-66.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Identification of the Minimum Effective Dose for Normally Distributed Endpoints Using a Model Selection Approach
AU - Kuiper, Rebecca M.
AU - Gerhard, Daniel
AU - Hothorn, Ludwig A.
N1 - Funding Information: The work of LAH was partly supported by the German Science Foundation grand HO-1687/9.
PY - 2014/1/2
Y1 - 2014/1/2
N2 - When identifying the minimum effective dose (MED) or the lowest observed adverse event level (LOAEL), researchers usually employ multiple comparison procedures (MCPs). The ones preferred are the Dunnett-type difference-to-placebo and ratio-to-control test. In this article, we will use a model selection criterion, namely the generalized order-restricted information criterion (GORIC). The GORIC can evaluate a set of hypotheses regarding the response means directly and simultaneously, where in this case in each hypothesis a different dose is hypothesized to be the MED or LOAEL. It takes different patterns of increasing response with increasing dose into account without pooling response means, whereas MCPs with order restrictions do. The GORIC chooses the best hypothesis of the set leading to the identification of the MED and, depending on the set, to a specific pattern of response means. We will show, by simulation, that the GORIC has advantages in identifying the MED or LOAEL, besides theoretical ones. Supplementary materials for this article are available online.
AB - When identifying the minimum effective dose (MED) or the lowest observed adverse event level (LOAEL), researchers usually employ multiple comparison procedures (MCPs). The ones preferred are the Dunnett-type difference-to-placebo and ratio-to-control test. In this article, we will use a model selection criterion, namely the generalized order-restricted information criterion (GORIC). The GORIC can evaluate a set of hypotheses regarding the response means directly and simultaneously, where in this case in each hypothesis a different dose is hypothesized to be the MED or LOAEL. It takes different patterns of increasing response with increasing dose into account without pooling response means, whereas MCPs with order restrictions do. The GORIC chooses the best hypothesis of the set leading to the identification of the MED and, depending on the set, to a specific pattern of response means. We will show, by simulation, that the GORIC has advantages in identifying the MED or LOAEL, besides theoretical ones. Supplementary materials for this article are available online.
KW - Analysis of variance
KW - GORIC
KW - LOAEL
KW - MED
KW - Optimal dose
KW - Order restrictions
UR - http://www.scopus.com/inward/record.url?scp=84893947561&partnerID=8YFLogxK
U2 - 10.1080/19466315.2013.847384
DO - 10.1080/19466315.2013.847384
M3 - Article
AN - SCOPUS:84893947561
VL - 6
SP - 55
EP - 66
JO - Statistics in Biopharmaceutical Research
JF - Statistics in Biopharmaceutical Research
SN - 1946-6315
IS - 1
ER -