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Exact(50)
However, unlike for the variability in duration since preceding surgery, annual frequency variability was very highly significantly correlated with both age variables: age at time of measuring frequency p-value = 0.00023; age at time of diagnosis p-value = 0.00020.
Even the anatomical component of the Derkay/Coltrera score at the time of enrollment did not account for the variability in the time since the last surgery given that the age variables and the surgeon's style had already been accounted for.
No significant differences were found when comparing the performance for gender or age variables.
In this analysis ANOVA is the most useful test because it allows evaluation of the effect due to gender (male female) with normalized age variables.
However, it is not because not all exogenous second-stage regressors including the son's age variables are included in the first stage in the Eq. (4).
Given that both gender and age variables would have portrayed very little variation, they would have remained meaningless in subsequent analyses.
Similar(10)
Here we remove the age variable from the model.
The age variable was coded in the following way.
18The age variable is recomputed to reflect the age at the moment of migration.
The variable also appears in interactions between it and the age variable.
The age variable was divided into four categories 0 4, 5 9, 10 14, 15 19.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com