Fig. 4From: Variations in pain prevalence, severity, and analgesic use by duration of survivorship: a cross-sectional study of 505 post-treatment head and neck cancer survivorsPain severity by opioid use. Using the World Health Organization (WHO) analgesia ladder: Step 0 for no analgesia, Step 1 for non-opioid pain medication, Step 2 for weak opioids, or Step 3 for strong opioidsBack to article page