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nice tutoria;GG includes bathtub-shape hazard
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simple demonstration of failure of the add new
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optimal cutpoint depends on unknown parameters;should
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nice comparison of models; econometrics; different use
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wonderful review article
except missing references from Scandanavian and German medical decision
making literature
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derivation of REML
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Cox models for exposure-response relationships. Stat
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authors wrote a
SAS macro for restricted cubic splines even though such a macro as
existed since 1984; would have gotten more useful results had simulation
been used so would know the true regression shape;measure of agreement
of two estimated curves by computing the area between them, standardized
by average of areas under the two;penalized spline and rcs were closer
to each other than to fractional polynomials
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use of statistics in epidemiology is largely
primitive;stepwise variable selection on confounders leaves important
confounders uncontrolled;composition matrix;example with far too many
significant predictors with many regression coefficients absurdly
inflated when overfit;lack of evidence for dietary effects mediated
through constituents;shrinkage instead of variable selection;larger
effect on confidence interval width than on point estimates with
variable selection;uncertainty about variance of random effects is just
uncertainty about prior opinion;estimation of variance is
pointless;instead the analysis should be repeated using different
values;"if one feels compelled to estimate $\tau^{2}$, I would recommend
giving it a proper prior concentrated amount contextually reasonable
values";claim about ordinary MLE being unbiased is misleading because it
assumes the model is correct and is the only model entertained;shrinkage
towards compositional model;"models need to be complex to capture
uncertainty about the relations...an honest uncertainty assessment
requires parameters for all effects that we know may be present. This
advice is implicit in an antiparsimony principle often attributed to L.
J. Savage ’All models should be as big as an elephant (see Draper,
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incorporates blocking structure in the
variables;selects different variables for different
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same magnitude, which aids in interpretation
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failed to review
aregImpute;excellent overview;ugly S code;nice description of different
statistical tests including combining likelihood ratio tests (which
appears to be complex, requiring an out-of-sample log likelihood
computation);congeniality of imputation and analysis models;Bayesian
approximation or approximate Bayesian bootstrap overview;"Although
missing at random (MAR) is a non-testable assumption, it has been
pointed out in the literature that we can get very close to MAR if we
include enough variables in the imputation models ... it would be
preferred if the missing data modelling was done by the data
constructors and not by the users... MI yields valid inferences not only
in congenial settings, but also in certain uncongenial ones as
well—where the imputer’s model (1) is more general (i.e. makes fewer
assumptions) than the complete-data estimation method, or when the
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use of outcome variable; excellent graphical summaries
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large loss of efficiency and
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large sample sizes
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lack of need for NRI to be
category-based;arbitrariness of categories;"category-less or continuous
NRI is the most objective and versatile measure of improvement in risk
prediction;authors misunderstood the inadequacy of three categories if
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continuous plot of risk for old model vs. risk for new model
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small differences in ROC area can still
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solves problem caused by lasso using
the same penalty parameter for variable selection and shrinkage which
causes lasso to have to keep too many variables in the model to avoid
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well
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impact analysis;example of decision aid being ignored
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destruction of statistical inference when cutpoints
are chosen using the response variable; varying effect estimates when
change cutpoints;difficult to interpret effects when dichotomize;nice
plot showing effect of categorization; PBC data
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excellent review and overview
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description of 3 types of missing data
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imputation of missing covariables using
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shows that claims that in a 2-arm study it is not true
that ANCOVA requires the population means at baseline to be
identical;refutes some claims of lia00lon;problems with
counterfactuals;temporal additivity ("amounts to supposing that despite
the fact that groups are difference at baseline they would show the same
evolution over time");causal additivity;is difficult to design trials
for which simple analysis of change scores is unbiased, ANCOVA is
biased, and a causal interpretation can be given;temporally and
logically, a "baseline cannot be a <i>response</i> to treatment", so baseline and
response cannot be modeled in an integrated framework as Laird and
Ware’s model has been used;"one should focus clearly on
“outcomes” as being the only values that can be influenced
by treatment and examine critically any schemes that assume that these
are linked in some rigid and deterministic view to
“baseline” values. An alternative tradition sees a baseline
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predictions of outcomes and models it in this way.";"You cannot
establish necessary conditions for an estimator to be valid by
nominating a model and seeing what the model implies unless the model is
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