We would like to thank Roze, Palmer, and Valentine (1) for their careful reading of our article (2) entitled “A multivariate logistic regression to screen for diabetes: development and validation.” The estimated probability formula for the logistic regression model was indeed misprinted with a minus sign. The correct estimated probability formula is:
P = 1/(1 + e−x), where x = −10.0382 + [0.0331 (age in years) + 0.0308 (random plasma glucose in mg/dl) + 0.2500 (postprandial time assessed as 0 to 8+ hours) + 0.5620 (if female) + 0.0346 (BMI)].
References
Address correspondence to William H. Herman, MD, MPH, University of Michigan Health System, Division of Endocrinology and Metabolism, 1500 East Medical Center Dr., 3920 Taubman Center, Ann Arbor, MI 48109-0354. E-mail: [email protected].
