By David W. Hosmer Jr., Stanley Lemeshow, Rodney X. Sturdivant
A new version of the definitive consultant to logistic regression modeling for future health technology and different applications
This completely increased Third variation provides an simply available advent to the logistic regression (LR) version and highlights the facility of this version by way of interpreting the connection among a dichotomous final result and a suite of covariables.
Applied Logistic Regression, 3rd variation emphasizes functions within the healthiness sciences and handpicks subject matters that most sensible swimsuit using smooth statistical software program. The e-book presents readers with cutting-edge thoughts for development, examining, and assessing the functionality of LR versions. New and up-to-date good points include:
- A bankruptcy at the research of correlated final result data
- A wealth of extra fabric for subject matters starting from Bayesian easy methods to assessing version fit
- Rich facts units from real-world stories that reveal each one process below discussion
- Detailed examples and interpretation of the offered effects in addition to workouts throughout
Applied Logistic Regression, 3rd version is a must have advisor for execs and researchers who have to version nominal or ordinal scaled end result variables in public overall healthiness, drugs, and the social sciences in addition to quite a lot of different fields and disciplines.
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Additional info for Applied Logistic Regression
3. 158). We defer a detailed discussion of the interpretation of these results to Chapter 3. 158 with 95 percent conﬁdence. As is the case with any regression model, the constant term provides an estimate of the response at x = 0 unless the independent variable has been centered at some clinically meaningful value. In our example, the constant provides an estimate of the log-odds ratio of CHD at zero years of age. As a result, the constant term, by itself, has no useful clinical interpretation.
Plot the equation for the ﬁtted values on the axes used in the scatterplots in 1(b) and 1(c). (f) Using the results of the output from the logistic regression package used for 1(e), assess the signiﬁcance of the slope coefﬁcient for AGE using the likelihood ratio test, the Wald test, and if possible, the score test. What assumptions are needed for the p-values computed for each of these tests to be valid? Are the results of these tests consistent with one another? What is the value of the deviance for the ﬁtted model?
Write down the equation for the logit transformation of this logistic regression model. What characteristic of the outcome variable, STA, leads us to consider the logistic regression model as opposed to the usual linear regression model to describe the relationship between STA and AGE? (b) Form a scatterplot of STA versus AGE. (c) Using the intervals (15, 24), (25, 34), (35, 44), (45, 54), (55, 64), (65, 74), (75, 84), (85, 94) for age, compute the STA mean over subjects within each age interval.