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

Compared with the 1-2-week group, the 4-5-week and 6-week groups exhibited significantly lower infection rates (2/42, 4.8%, 4-5-week group; 0%, 0/33, 6-week group; vs. 41/95, 43.2%, 1-2-week group; p<0.001). 
user
This is no advice
assistant