Table 5. Analgesic drugs assumed by the 1021 patients during the first 3 weeks.

ATC categories	n° (%) of patients
M01A anti-inflammatory products, nonsteroids	140 (14%)
M01AB acetic acid derivatives (e.g.diclofenac, ketorolac)	107 (10%)
M01AC oxicam (e.g. piroxicam)	4 (<1%)
M01AE propionic acid derivatives (e.g. ibuprofen, naproxen)	15 (1%)
M01AX other anti-inflammatory, nonsteroids (e.g. nimesulide)	18 (2%)
N02 analgesics	167 (16%)
N02A opioids	72 (7%)
N02AA morphine	26 (3%)
N02AB fentanyl	7 (1%)
N02AC dextropropoxyphene	1 (<1%)
N02AE buprenorphine	7 (1%)
N02AX tramadol	32 (3%)
N02B other analgesics and antipyretics	97 (9%)
N02BA salicylic acid and derivatives	3 (<1%)
N02BE anilides (e.g. acetaminophen)	23 (2%)
N02BE in association with opioids (codeine+acetaminophen)	71 (7%)