Marked predictive signals. This figure shows the marked signals. Black denotes the signal for colorectal carcinoma. Red denotes the signals for bronchial carcinoma, pancreas carcinoma, prostate cancer, and pancreatitis. Greens denotes the signals for heart attack and heart insufficiency. The heart signals (green) are correlated with a Pearson correlation of ρ = 0.9981. Here, the heart attack signal shows a higher amplitude than the heart insufficiency signal, which may be a result of the increased troponin T or troponin I levels during heart attack compared to the slightly increased levels within heart insufficiency.