Figure 2.

Receiver operating characteristic (ROC) curve (left panel) and box plot analysis (right panel) of plasma levels of (A) asymmetric dimethylarginine (ADMA), (B) phosphatidylcholine (PC) acyl-alkyl (ae) C34:3, (C) creatinine, (D) methionine, (E) PC ae C34:2, and (F) PC acyl-acyl (aa) C42:2 for the diagnosis of amyotrophic lateral sclerosis (ALS). The area under the ROC curve (AUC) is in shadow. The black center line in the box plot denotes the median, while the blue or green boxes contain the 25^th to 75^th percentiles for patients with ALS or NC, respectively. The black whiskers mark the 5^th and 95^th percentiles, and mean values are marked with yellow dots. Two-tailed Student’s t-test. NC: age- and sex-matched controls.