1 = male
2 = female

0 = no
1 = yes

Knosp grade
0 = 0
1 = 1
2 = 2
3 = 3
4 = 4

Postoperative pituitary-gonadal axis dysfunction
0 = normal
1 = yes

Postoperative hypoalbuminemia
0 = normal
1 = low

Pathological tumor type
0 = Non-functional
1 = GH
2 = （PRL）
3 = （FSH）
4 = （ACTH）
5 = （TSH）
6 = Plurihormonal