Abstract
A model for a two-stage selection program based upon normally distributed variables is examined. Subjects in the upper part of the distribution of first-stage observations are retained and subsequently observed an additional number of times in a second stage. Subjects in the upper part of the distribution of second-stage observations are again retained. The first stage consists of n1 observations and the second stage of n2 subsequent observations. The effect of regression toward the mean and the mean and variance of the distribution of retained subjects are examined numerically as functions of the proportions eliminated at each stage and number of first- and second-stage observations.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 394-401 |
| Number of pages | 8 |
| Journal | American Journal of Epidemiology |
| Volume | 116 |
| Issue number | 2 |
| State | Published - Aug 1982 |
Keywords
- Classification
- Clinical trials
- Mass screening
- Research design
ASJC Scopus subject areas
- Geriatrics and Gerontology
- Epidemiology
Cite this
Regression toward the mean in a two-stage selection program. / Mcmahan, C. Alex.
In: American Journal of Epidemiology, Vol. 116, No. 2, 08.1982, p. 394-401.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Regression toward the mean in a two-stage selection program
AU - Mcmahan, C. Alex
PY - 1982/8
Y1 - 1982/8
N2 - A model for a two-stage selection program based upon normally distributed variables is examined. Subjects in the upper part of the distribution of first-stage observations are retained and subsequently observed an additional number of times in a second stage. Subjects in the upper part of the distribution of second-stage observations are again retained. The first stage consists of n1 observations and the second stage of n2 subsequent observations. The effect of regression toward the mean and the mean and variance of the distribution of retained subjects are examined numerically as functions of the proportions eliminated at each stage and number of first- and second-stage observations.
AB - A model for a two-stage selection program based upon normally distributed variables is examined. Subjects in the upper part of the distribution of first-stage observations are retained and subsequently observed an additional number of times in a second stage. Subjects in the upper part of the distribution of second-stage observations are again retained. The first stage consists of n1 observations and the second stage of n2 subsequent observations. The effect of regression toward the mean and the mean and variance of the distribution of retained subjects are examined numerically as functions of the proportions eliminated at each stage and number of first- and second-stage observations.
KW - Classification
KW - Clinical trials
KW - Mass screening
KW - Research design
UR - http://www.scopus.com/inward/record.url?scp=0019960589&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0019960589&partnerID=8YFLogxK
M3 - Article
C2 - 7051820
AN - SCOPUS:0019960589
VL - 116
SP - 394
EP - 401
JO - American Journal of Epidemiology
JF - American Journal of Epidemiology
SN - 0002-9262
IS - 2
ER -