Intestinal Alkaline Phosphatase Deficiency Is Associated with Ischemic Heart Disease

Figure 2

IAP levels are low in IHD patients at most percentile points. Individual IAP values from each group (healthy controls or IHD patients) were arranged from the lowest to the highest, and then, the average IAP value within each 20th percentile was calculated ( within each 20th percentile for IHD patients, and within each 20th percentile for healthy controls). Average values for corresponding percentiles are plotted. Statistics: values are expressed as . Statistical significance of the difference between two respective groups was tested using the unpaired two-tailed Student’s -test. is considered significant. ns: not significant; . Note: only the values in first and last 20 percentile divisions will be greatly affected if an “outlier” (a few extremely high or low values, compared to the most other values, affecting the mean value) is present. The values within 20th and 80th percentiles are real, not affected by outliers.