Pain, the primary outcome, will be assessed using the Color Analogue pain Scale (CAS) (1-5) (see appendix for CAS scale picture). This scale is anchored by descriptors "no pain" and "most pain" with gradation in color, area, and length (see attached CAS figure). The point on the tool that is identified by the child with the plastic marker on the colored scale front side is converted to a corresponding numerical scale from the back of the tool. This number is the CAS score in centimeters. This scale has been well validated for use in children over five years of age undergoing procedures in the PED with minimal or no training with this tool. The following instructions are given prior to use of the scale: "This is a pain scale. The bottom, where it is small and white, means no pain, and the top, where it is wider and red, means the most pain you can imagine (instructor points to anchor). You slide the marker to the spot on the scale that shows how much pain you are having right now. (2)"