Abstract
"Regression to the mean" (RTM) is a statistical phenomenon originating from the random variation of variables rather than a true association between the variables. RTM is closely linked to mathematical coupling; unawareness of these phenomena may lead to misinterpretation of data. A study examining intracranial pressure before and after infusion of manitol is presented, in which mathematical coupling caused a highly significant (but spurious) correlation between the analysed data. The significance of RTM and mathematical coupling is demonstrated by analysis of a data set derived from random numbers.
| Bidragets oversatte titel | Mathematical coupling and "regression to the mean". A statistical case history |
|---|---|
| Originalsprog | Dansk |
| Tidsskrift | Ugeskrift for Laeger |
| Vol/bind | 161 |
| Udgave nummer | 38 |
| Sider (fra-til) | 5325-6 |
| Antal sider | 2 |
| ISSN | 0041-5782 |
| Status | Udgivet - 20 sep. 1999 |
| Udgivet eksternt | Ja |
Emneord
- Data Interpretation, Statistical
- Diuretics, Osmotic/pharmacology
- Humans
- Intracranial Pressure/drug effects
- Mannitol/pharmacology
- Regression Analysis