Fig. 1

Present pain intensity（PPI） and method of its evaluation
A patient selects a number, which is converted to the corresponding point and used for analysis.
　1 ．No pain → 0 point
　2 ．Mild pain → 1 point
　3 ．Discomforting pain → 2 points
　4 ．Distressing pain → 3 points
　5 ．Horrible pain → 4 points
　6 ．Excruciating pain → 5 points