Correction to: Mapping PedsQL™ scores onto CHU9D utility scores: estimation, validation and a comparison of alternative instrument versions

In the original publication of the article, the equation CHU9DPredicted = exp(BETAPredicted)/(1 + exp(BETA Predicted)) was formatted incorrectly under Model 2. The correct version is provided below: Model 2—assuming a 15-year-old female with a score of 50 in each functioning dimension: The original article has been corrected. BETAPredicted = 1.611745 − 4.724501 * (Physical Functioning) + 2.447472 * (Emotional Functioning) + 0.9967647 * (School Functioning) + 4.144465 * (Physical Functioning)2 + 0.1686639 * (Male) − 0.1198546 * (Age) CHU9DPredicted = exp(BETAPredicted)∕(1 + exp(BETAPredicted)) → BETAPredicted = 1.611745 − 4.724501 * (50∕100) + 2.447472 * (50∕100) + 0.9967647 * (50∕100) + 4.144465 * (50∕100)2 + 0.1686639 * 0 − 0.1198546 * 15 = 0.20991 → CHU9DPredicted = exp (0.20991)∕ (1 + exp (0.20991)) = 0.55 The original article has been corrected.