方法1、设计缺氧的量化评分表，根据评分值分出轻度缺氧、中度缺氧和重度缺氧。
Methods: 1. Design a table for quantified scoring of oxygen deficiency, and classify mild, moderate and severe oxygen deficiency according to the scoring.
设计：对一组随访18个月的老年患者应用疾病累积评分表进行回顾性评分。
DESIGN: The CIRS was scored retrospectively in a cohort of elderly patients followed for 18 months.
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