borderline significanceP=0.06
In the IPF-OSA group S100A9 levels were also correlated with indices of OSA severity ( Table SIII ), including TST90 (r=0.34, P=0.03) and with a borderline significance after adjustments for obesity, smoking and GAP index (β=0.015, P=0.06), ODI (r=0.36, P=0.023) which persisted after adjustments for obesity, smoking and GAP index (β=0.013, P=0.02), and nocturnal mean SaO 2 (r=-0.32, P=0.04), but this correlation disappeared after adjustments for obesity, smoking and GAP index.