变量 | 赋值 | |||
Y | 1 = 慢性浅表性胃炎 | 2 = 慢性萎缩性胃炎 | 3 = 胃癌前病变 | 4 = 胃癌 |
x1 | 1 = 男性 | 2 = 女性 |
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|
x2 | 1 = <60岁 | 2 = ≥60岁 |
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|
x3 | 1 = HP强阳性 | 2 = HP阳性 | 3 = HP弱阳性 | 4 = HP阴性 |