floor effect


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floor effect

A statistical error in which very low data points are not registered or counted because of an artificial limitation that prevents them from being appropriately noted and recorded. In research on certain variables, e.g., body temperature, data are meaningless below levels incompatible with life.
References in periodicals archive ?
The author makes a good point in the chapter by addressing the floor effect of relational uncertainty (i.e., low levels of relational uncertainty) in empirical data.
Among the subscales of this questionnaire also there was no floor effect. The ceiling effect was 4% in the physical discomfort subscale, 2% in the worries/concerns subscale, and 6% in the satisfaction subscale.
We have not observed any ceiling effect, but less than 5% floor effect was observed in KOOS sports/recreation and QOL subscales.
Fifty-four participants chose the lowest ("best") response option (22% floor effect) whereas six participants chose the highest ("worst") response option (2% ceiling effect).
"What I saw basically reflected what we call the floor effect of the VAS scores in the epidural group.
Results suggest a notable floor effect in the distribution of age-equivalent scores that was not observed in the raw score or standard score distributions.
Others like cork bark from florists to give a forest floor effect. Gravel also makes a nice topping.
Due to a failure to replicate the construct validity of the RI, further examination of relationships between the RI and SRSI-R were not conducted SRSI-R scores were high at each measurement period and a floor effect was present for many scales with high scores obtained after a period of rest.
I say dreaded because at one point, Port Talbot DJs discovered ultra violet lighting as a dance floor effect.
Also, in the saute, much lower inter-subject variability was observed in the floor effect on lower extremity stiffness.