结论睡眠呼吸暂停事件明显多见于浅睡眠期，具体原因有待进一步探讨。
Conclusion Apnea events happened most frequently in light sleep stage. The reason is still unclear.
结果睡眠呼吸暂停事件在睡眠各期均可出现，但多见于浅睡眠期，以2期最明显。
Results sleep apnea events were found in each different sleep stage. The events happened frequently in light sleep stage, most in stage 2.
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