| Main Title |
Regression using "hockey stick" functions / |
| Author |
Hasselblad, Victor. ;
Creason, John P. ;
Nelson., William C.
|
| Other Authors |
|
| CORP Author |
Health Effects Research Lab., Research Triangle Park, N.C. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Health Effects Research Laboratory ; NTIS [distributor], |
| Year Published |
1976 |
| Report Number |
EPA/600-1-76-024 |
| Stock Number |
PB 253 576 |
| OCLC Number |
10829556 |
| Subjects |
Biometry--methods
|
| Additional Subjects |
Air pollution ;
Regression analysis ;
Dosage ;
Least squares method ;
Analysis of variance ;
Probit analysis ;
Hockey stick functions
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EIAD |
EPA-600/1-76-024 |
|
Region 2 Library/New York,NY |
06/27/2003 |
DISPERSAL |
| EJBD ARCHIVE |
EPA 600-1-76-024 |
|
Headquarters Library/Washington,DC |
09/14/2010 |
| EJBD |
EPA 600-1-76-024 |
|
Headquarters Library/Washington,DC |
05/22/2014 |
| EKBD |
EPA-600/1-76-024 |
|
Research Triangle Park Library/RTP, NC |
06/06/2003 |
| NTIS |
PB-253 576 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ii, 12 leaves : illustrations ; 28 cm. |
| Abstract |
The establishment of criteria for air pollutants requires that a threshold level be established below which no adverse health effects are observed. Since standard dose response curves, such as the logit or probit, assume an effect at all levels, a segmented function was developed. This function has zero slope up to a point, and then increases monotonically from that point. Thus the name hockey stick function. The increasing portion need not be linear; any function that can be fitted by least squares techniques will work. A method for computing confidence intervals is also given. Since the curve can be used as a dose response curve, some comparisons are made with the more conventional probit and logit curves. In general, the fit of the hockey stick curve is as good as either the logit or probit curve, even when the data originate from a logit or probit distribution. |
| Notes |
"June 1976." "EPA/600-1-76-024." Includes bibliographical references (page 9). |
| Place Published |
Research Triangle Park, N.C. Springfield, Va. |
| Corporate Au Added Ent |
Health Effects Research Laboratory (Research Triangle Park, N.C.) |
| Title Ser Add Ent |
Environmental health effects research series. |
| PUB Date Free Form |
1976 |
| Series Title Traced |
Environmental health effects research series |
| Series Title Untraced |
Environmental health effects research series |
| NTIS Prices |
PC A02/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20140108140204 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01413cam 2200349Ia 45020 |
