Question: is this a 2) strong advice, 1) weak advice 0) no advice?

Moreover, Lee et al reported that there were no differences in postoperative opioid consumptions and pain intensities during the first 24 h in patients undergoing isoflurane anesthesia with 70% nitrous oxide or with 0.17 μg/kg/min remifentanil infusion for open colorectal surgery18. 
user
This is no advice
assistant