...。匹配的因素所占的比例，在对照组与在病例组一致。如病例组中男女各半，则对照组中也如此。 B：个体匹配 个体匹配(individual matching)：指以病例和对照的个体为单位进行匹配 以病例和对照的个体为单位进行匹配。
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重新认识到关节表面置换术的骨量保存优势后，研究者通过改变关节假体匹配来减少磨损。
After recognising the possible bone-conserving benefits of resurfacing arthroplasty, researchers looked into reduction of wear generated at the articular couple.
每种病历都由四个女性控制群与一个体匹配，当索引个体被诊断为RA的时候，这些控制群被视为活着并且从被诊断出来犯ra而解脱出来的个体。
Individuals were matched with four female controls for every case. Controls were identified as those alive and free from diagnosed RA when the index individual was diagnosed with RA.
函数体然后从下一行开始，一直连续下去，直到遇到一个匹配的endfunction关键字。
The body of the function then starts on the next line, and continues until a matching endfunction keyword is encountered. For example.
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