Index 383

F value, 155

h value, 345–346

paired, 363

positive predictive, 187

pseudo-r-squared, 259

r value, 203–206

tied, 49

Vanderbilt University, 60

Vanderbilt University Medical Center, 324–325

variable names, 110

variable width, 128

variables

binary, 173–174, 177, 236–238

categorical, 236–238

clinical center, 338

dependent, 208, 213, 235–245

dichotomous, 173–174, 249, 269

event status, 337

independent, 208–210, 213, 215, 291–294

indicator, 237–238

multilevel, 236

nominal, 102

nuisance, 145

potential confounding, 64

variance, 119, 143, 155

variance table, 155

viruses, 1

Viya, 56, 60

volume of distribution (Vd), 280–282

W

Wallis, Wilson Allen (statistician), 141

washout intervals, 65

waves, 96, 176

weak linear relationship, 214

websites. See also G*Power; Microsoft Excel

ClinCalc, 172

Cochrane, 297

Comprehensive R Archive Network (CRAN), 58

Epi Info, 59

Graphpad, 67

International Business Machines, 57

National Health and Nutrition Examination

Survey (NHANES), 82, 86, 93, 148–157

National Institutes of Health (NIH), 72–73

OpenStat and LazStats, 59

Power and Sample Size Calculation (PS), 60,

171–172, 324–325

SAS OnDemand for Academics (ODA), 55–56, 57

Social Science Statistics, 170

Statista, 34

StatPages, 158, 190, 282

weibull distribution, 330, 356–357

weight, 218–220, 225–226, 239–240, 246

Welch, Bernard Lewis (statistician), 141

Welch test, 143, 150–151

Whitney, Donald Ransom (statistician), 141

whole numbers, 107

Wilcoxon, Frank (statistician), 141

Wilcoxon Signed-Ranks (WSR) test, 47–49, 142, 146

Wilcoxon Sum-of-Ranks test, 47–49, 143, 157, 362

withdrawal criteria, 64

World War II, 71, 264

X

X variable, 213–215, 225–228

x-rays, 188

Y

Y variable, 213–216, 224–228

Yates, Frank (statistician), 168–169

Yates continuity correction, 168–169