Pain intensity assessment tool
Pain, pain
Pain intensity was assessed using the visual analogue scale (VAS), which is represented by a 100 mm (10 cm) horizontal line with one end referring to no pain (score 0) and the other referring to the worst pain (score 10). The patient was asked to choose a mark that reflected his/her feelings of pain severity. Pain intensity was classified into 4 levels: no pain (0), mild pain (1–3), moderate pain (4–6), and severe pain (7–10) [