Figure 3. Decrease in combined McGill ratings of patients who did not respond to morphine (patient 3 and patient 7) or in whom morphine was contraindicated (patient 4). Visual analogue scale ratings decreased similarly to McGill ratings for patient 3 and patient 7 but not for patient 4, for whom they remained stable. The dotted portion of the line for patient 3 denotes the period after which epidural morphine (12 to 35 mg/day) was initiated.