Fig. 4
From: Effect of vitamin D status on normal fertilization rate following in vitro fertilization
ROC curve and performance characteristics for total serum vitamin D measured in patients. a (normal fertilization rate): The area under the ROC curve for vitamin D was 0.674, p = 0.0007. b (clinical repgnancy rate): The area under the ROC curve for vitamin D was 0.521, p = 0.4251. c (live birth rate): The area under the ROC curve for vitamin D was 0.523, p = 0.3822