Retrospective Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. May 28, 2015; 21(20): 6246-6251
Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6246
Figure 1
Figure 1 Receiver-operator characteristic analysis. Receiver-operator characteristic analysis was performed to determine the threshold value of hemoglobin (A), total protein (B), lactate dehydrogenase (C), and blood urea nitrogen (D) that could differentiate between upper and lower gastrointestinal bleeding. Solid straight line: a line with a slope of 45° used to calculate the threshold by JMP10.0.2 software, dashed line: reference line.