Table 3 Postoperative change in preoperative complaint (measured by VAS) for different levels of postoperative volume reduction.

Postoperative cyst volume	Postoperative change in VAS
<50%†	32.8*
>50%‡	28.5*

NOG, Neuroimaging Outcome Group; VAS, visual analogue scale.

†NOG 1 and 2.

‡NOG 3 and 4.

*Not significant.