例如，非靶向治疗组在一开始可能病情更为严重。
The untargeted group might, for example, have been sicker to start with.
不出意料，与延期非手术治疗组相比，早期手术组改善更快。
Not surprisingly, the early surgery group improved more rapidly than the prolonged nonoperative care group.
不出意料，与延期非手术治疗组相比，早期手术组改善更快。
Not surprisingly, the early surgery group improved more rapidly than the prolonged nonoperative care group.
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