Logistic Regression: A Self-learning Text, Third Edition (Statistics in the Health Sciences)

T

Test-wise error rate, 280
Threshold idea, 7
Time-dependent variables, 494
Time-independent variables, 494
Trapezoid method, 360, 363–364
True negatives (TN), 349
True positive rate (TPR), 355
True positives (TP), 349

U

Unbiased estimates, 117
Unconditional estimate, 403
Unconditional logistic regression
SAS and, 602–612
SPSS and, 635–640
Stata and, 649–654
Unconditional ML approach,
107–111
Unknown parameters, 8
Unstructured correlation structure, 510,
512–513

V

Validity, 169

matching and, 394

precision and, 171–172

Variable specification, 169, 173–175,

180–181, 245

Variables, retaining, 184–185

Variance-covariance matrix, 117–118,

121, 123, 132–133

collinearity assessment, 272

Variance decomposition proportions, 271

Variance estimators, 516–519

W

Wald tests, 138–140

carrying out, 148

defined, 120

GEE models and, 519

ordinal model and, 475

polytomous model and, 443, 448

Z

Z statistic, 139–140

Index 701