Confidence intervals vs reference intervals for regression analysis: which one to use?
نویسندگان
چکیده
منابع مشابه
Confidence Intervals for Nonparametric Regression
In non-parametric function estimation, providing a confidence interval with the right coverage is a challenging problem. This is especially the case when the underlying function has a wide range of unknown degrees of smoothness. Here we propose two methods of constructing an average coverage confidence interval built from block shrinkage estimation methods. One is based on the James-Stein shrin...
متن کاملConfidence intervals for nonlinear regression extrapolation
The various methods of confidence intervals construction for nonlinear regression are considered. The new method named Ž . by a method of associated simulation the AS-method is proposed. Using computerized simulation, it is shown on the example that only two methods, the bootstrap and the AS-method, give a satisfactory accuracy. The advantage of the AS-method is the speed. In comparison with th...
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With fixed predictors, the standard method (Cohen, Cohen, West, & Aiken, 2003, p. 86; Harris, 2001, p. 80; Hays, 1994, p. 709) for computing confidence intervals (CIs) for standardized regression coefficients fails to account for the sampling variability of the criterion standard deviation. With random predictors, this method also fails to account for the sampling variability of the predictor s...
متن کاملOn confidence intervals for semiparametric expectile regression
In regression scenarios there is a growing demand for information on the conditional distribution of the response beyond the mean. In this scenario quantile regression is an established method of tail analysis. It is well understood in terms of asymptotic properties and estimation quality. Another way to look at the tail of a distribution is via expectiles. They provide a valuable alternative s...
متن کاملConfidence Intervals for Autoregressive Coefficients Near One
Often we are interested in the largest root of an autoregressive process. Available methods rely on inverting t-tests to obtain confidence intervals. However, for large autoregressive roots, t-tests do not approximate asymptotically uniformly most powerful tests and do not have optimality properties when inverted for confidence intervals. We exploit the relationship between the power of tests a...
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics & Gynecology
سال: 2018
ISSN: 0960-7692
DOI: 10.1002/uog.19121