Table 2. Univariate analysis of progress-free survival (PFS) in 155 patients with gastric gastrointestinal stromal tumors (GISTs).

Index	Cases	Recurrence, metastasis or death, n (%)		P value
		Yes	No
Age (years)				0.313
<60 years	81	13 (16.0)	68 (84.0)
≥60 years	74	17 (23.0)	57 (77.0)
Gender				0.836
Male	93	19 (20.4)	74 (79.6)
Female	62	11 (17.7)	51 (82.3)
Size (cm)				0.005
<5	49	3 (6.1)	46 (93.9)
5–10	78	17 (21.8)	61 (78.2)
>10	28	10 (35.7)	18 (64.3)
Shape				0.004
Round/oval	69	6 (8.7)	61 (91.3)
Lobulated/irregular	86	24 (27.9)	62 (72.1)
Necrosis or cystic degeneration				0.003
Yes	99	26 (26.3)	73 (73.7)
No	56	4 (7.1)	52 (92.9)
Margin				<0.001
Defined/smooth	126	12 (9.5)	114 (90.5)
0 rough/Ill-defined	29	18 (62.1)	11 (37.9)
Growth pattern				<0.001
Endophytic	132	17 (12.9)	115 (87.1)
Exophytic	23	13 (56.5)	10 (43.5)
Enhancement pattern				0.016
Homogeneous	37	2 (5.4)	35 (94.6)
Heterogeneous	118	28 (23.7)	90 (76.3)
Mitotic rate				0.015
<5	83	10 (12.0)	73 (88.0)
≥5	72	20 (27.8)	52 (72.2)
Ki-67 index				0.023
<10	123	19 (15.4)	104 (84.6)
≥10	32	11 (34.4)	21 (65.6)