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

In the present study, renal function estimated via the Cockcroft-Gault equation, irrespective of body weight used, as well as the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation, accounted for only around 22 to 23% of the variability in aminoglycoside CL. 
user
This is no advice
assistant