Table 3.
Univariable analysis of potentially malignant and malignant GISTs.
| Variables | Training group | Validation group | ||||
|---|---|---|---|---|---|---|
| Potentially malignant (n=104) | Malignant (n=238) | P | Potentially malignant (n=104) | Malignant (n=238) | P | |
| Sex | 0.9101 | 0.3161 | ||||
| Female | 34(58.621%) | 78(56.522%) | 20(43.478%) | 54(54.000%) | ||
| Male | 24(41.379%) | 60(43.478%) | 26(56.522%) | 46(46.000%) | ||
| Age[meadian, Q1-Q3] | 61.000 [58.000-68.000] | 63.000 [55.000-69.000] | 0.6832 | 64.000 [54.250-71.500] | 62.500 [51.000-68.000] | 0.1722 |
| Diameter ≥5 cm | <0.0011 | <0.0011 | ||||
| No | 54(93.103%) | 18(13.043%) | 42(91.304%) | 14(14.000%) | ||
| Yes | 4(6.897%) | 120(86.957%) | 4(8.696%) | 86(86.000%) | ||
| Internal necrosis | <0.0011 | <0.0011 | ||||
| No | 54(93.103%) | 28(20.290%) | 46(100.000%) | 38(38.000%) | ||
| Yes | 4(6.897%) | 110(79.710%) | 0(0.000%) | 62(62.000%) | ||
GIST, gastrointestinal stromal tumors; Q1, First quarter; Q3, Three quarter; 1 Chi square test; 2 Mann-Whitney U test.