Different definitions in childhood asthma: how dependable is the dependent variable?

Different definitions in childhood asthma: how dependable is the dependent variable?

There is abundant literature on how to select and statistically deal with predictors in prediction models. Less attention has been paid to the choice of the outcome. We assessed the impact of different asthma definitions on prevalence estimates and on the prediction model's performances. We searched PubMed and extracted data of definitions used to diagnose childhood asthma (between 6 and 18 yrs...

How Is Meaning Grounded in Dictionary Definitions?

Meaning cannot be based on dictionary definitions all the way down: at some point the circularity of definitions must be broken in some way, by grounding the meanings of certain words in sensorimotor categories learned from experience or shaped by evolution. This is the “symbol grounding problem”. We introduce the concept of a reachable set — a larger vocabulary whose meanings can be learned fr...

modification of the renovation trend is dependent upon modification of definitions

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The Effect of Maternal Age on Childhood Asthma

Some studies indicate that children born to younger mothers are at a higher risk of wheezing and asthma.  To investigate the maternal age associated with asthma in children, a case-control study on 310 asthmatic and 310 non-asthmatic children aged 3 to 4 years was organized during a one-year period.  A questionnaire was used to obtain information about the child’s personal susceptibility factor...

How is the Mother Tongue Acquired