Table 2 The results of two-piecewise linear regression model between platelet count and all-cause death or readmission.

From: Platelet count has a U-shaped association with all-cause mortality in COPD patients

 

All-cause death

HR (95% CI) P-value

Readmission

HR (95% CI) P-value

Cutoff value, × 109/L

198.449

200.449

< Cut-off value (per 10 × 109/L increment)

0.87 (0.82–0.97) < 0.001

0.86(0.82–0.91) < 0.001

> Cut-off value (per 10 × 109/L increment)

1.06 (1.03–1.08) < 0.001

1.06 (1.03–1.08) < 0.001

P for log likelihood ratio test

< 0.001

0.003

  1. HR, hazard ratio; CI, confidence interval.Two-piecewise linear regression model were adjusted for age, body mass index, smoking history, the ratio of forced expiratory volume in the first second to forced vital capacitytotal cholesterol, INR, international normalized ratio, D-Dimer, albumin, blood urea nitrogen, serum creatinine, triglyceride, total cholesterol, low-density lipoprotein cholesterol, high-sensitivity C-reactive protein, comorbidities (diabetes mellitus, hypertension, chronic kidney disease, NYHA class III/IV symptoms, and hyperlipidemia), and medication use (antiplatelet, lipid-lowering drugs, anticoagulation, bronchodilators, inhaled cortico, and antibiotic).P-value by two-piecewise Cox proportional hazards model.
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