李克特量表是一种广泛应用于问卷调查中的心理测量工具，由美国社会心理学家李克特于1932年创立。它通过一组陈述来测量人们的看法，每道题通常提供五个等级的回答选项（如从“非常同意”到“非常不同意”），并分别赋予5到1的分数。最终，将所有题目的 ...

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The proportion of retroperitoneal malignant peripheral nerve sheath tumours (RMPNST) in retroperitoneal tumors is less than 5%, but the mortality rate is very high. However, there is no relevant ...

Developmental signaling pathways play important roles in cancer initiation and therapeutic resistance. Poorly differentiated hepatocellular carcinomas (HCCs) usually show phenotypic resemblance to ...

以下内容转载自“医咖会”微信公众号（medieco-ykh），作者张耀文。 上一期我们讨论了有序多分类Logistic回归的SPSS简单操作，本期“科研加油站”栏目，我们一起来探讨有序多分类Logistic回归的SPSS详细操作。 问题与数据 研究者想调查人们对“本国税收过高”的 ...

Pictured here is a map of the Partition of Africa. Photo courtesy of Stuart Rankin via Flickr Commons. The Scramble for Africa began with the Berlin Conference (1884–85) and ended by the early ...