Fig. 2
From: Changes in tear volume and ocular symptoms of patients receiving oral anticancer drug S-1
Relationship between watering eyes and a change in the tear volume in the “watering eyes” and “no watering eyes” groups. A five-point scale ranging from level 0–4 is the same as those described in the legend of Fig. 1. *P < 0.05; **P < 0.01. Based on the tear volume at the start of the oral administration of S-1, change in the tear volume was estimated. The box line, the median value; the upper and lower ends of the box, the third and the first quartile; and the upper and lower ends of the beard, the maximum and minimum values