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Table 2: 
Patient demographics, tumor secretory status and tumor size in 390 patients with pituitary macroadenomas
Clival Invasion Sex Age Pathologic Subtype Volume
Male Female χ², P Value Mean (yr) 2 Independent-Samples t Test Null-Cell Secreting χ², P Value (mean, cm³) Mann-Whitney Test, P Value
With 7 (1.79%) 25 (6.41%) 13.861, P < .001 49.84 ± 9.25 P = .972 23 (5.90%) 9 (2.31%) 18.937, P < .001 16.45 ± 22.18 Significant, P < .001
Without 201 (51.54%) 157 (40.26%) 45.61 ± 12.39 119 (30.51%) 239 (61.28%) 4.94 ± 6.18
Summary 208 (53.33%) 182 (46.67%) 45.78 ± 12.53 142 (36.41%) 248 (63.59%) 5.55 ± 7.43

Clival Invasion	Sex			Age		Pathologic Subtype			Volume
Clival Invasion	Male	Female	χ², P Value	Mean (yr)	2 Independent-Samples t Test	Null-Cell	Secreting	χ², P Value	(mean, cm³)	Mann-Whitney Test, P Value
With	7 (1.79%)	25 (6.41%)	13.861, P < .001	49.84 ± 9.25	P = .972	23 (5.90%)	9 (2.31%)	18.937, P < .001	16.45 ± 22.18	Significant, P < .001
Without	201 (51.54%)	157 (40.26%)	13.861, P < .001	45.61 ± 12.39	P = .972	119 (30.51%)	239 (61.28%)	18.937, P < .001	4.94 ± 6.18	Significant, P < .001
Summary	208 (53.33%)	182 (46.67%)		45.78 ± 12.53		142 (36.41%)	248 (63.59%)		5.55 ± 7.43