图 1.
慢性咳嗽和咽喉反流相关分析图
纵轴为39个自然月中，行气道pH值监测的慢性咳嗽人数，横轴为对应月份中监测到发生LPR（RYAN指数阳性）人数，其中有11个月的数据点重合，结果提示慢性咳嗽与LPR的发生呈高度正相关。
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.