The VAS for pain was used to assess the pain intensity.
The VAS for pain consists of three 100mm lines, each
labelled on the left as ‘no pain’ (0 mm) and on the right as
‘very severe pain’ (100mm). Patients were asked to draw
three vertical lines, one through the upper line for
current pain, one through the middle line for the pain at
the best moment during the earlier week and one through
the lower line for the pain at the worst moment during
the earlier week.