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Describe the changes that have occurred in childbirth practices during the twentieth century.How do these practices differ from those of previous centuries?
Quantitative Variables
Variables that represent numeric values and can be measured and quantified.
Two-Factor ANOVA
A statistical analysis method used to analyze the effects of two independent variables on a dependent variable and the interaction between them.
Interaction
In statistics, the interdependent effect of two or more variables on a response variable, where the effect of one variable depends on the level of the other variable(s).
Treatments
The specific conditions applied to the experimental units or subjects in a study to observe potential effects.
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