线阳性率明显高于体征阳性率。
X-ray positive rate is significantly higher than the positive rate of signs.
患者中毒后周围神经系统症状和体征阳性率、中枢神经系统症状阳性率、各种精神症状阳性率（除幻听幻视外）均高于中毒前，差异有统计学意义（P<0.05）；
The positive rate of symptoms of peripheral nerves, central nerves and psychogeny except auditory and visual hallucination after poisoning was significantly higher than that before(P<0.05).
它与脊髓病的严重程度是否存在相关性，以及对此阳性体征在无症状者中的重要性还未达成一致的看法。
It is whether the sign correlates with the severity of myelopathy, and no consensus exists regarding the significance a positive sign in asymptomatic individuals.
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