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. 2020 Jun;10(3):396–404. doi: 10.21037/cdt.2020.03.02

Table 2. Uni-and multivariate analyses of CSR, obstructive sleep apnea and potential confounders.

Variables Primary end-point Secondary end-point
Univariate Multivariate Univariate Multivariate
HR (95% CI) P HR (95% CI) P HR (95% CI) P HR (95% CI) P
CSR/OSA 2.70 (1.01–7.22) 0.047 4.73 (1.10–20.28) 0.037 1.96 (1.06–3.63) 0.032 2.15 (1.00–4.65) 0.051
Age 1.04 (0.99–1.08) 0.090 1.03 (0.98–1.09) 0.263 1.01 (0.98–1.03) 0.665 0.99 (0.96–1.02) 0.519
Body weight 1.00 (0.98–1.03) 0.911 1.02 (0.99–1.06) 0.175 1.00 (0.97–1.01) 0.901 1.00 (0.99–1.02) 0.766
LVEF 0.96 (0.91–1.01) 0.140 0.97 (0.92–1.02) 0.235 0.99 (0.95–1.03) 0.466 0.99 (0.95–1.03) 0.572
NYHA ≥ III 1.92 (0.45–8.23) 0.382 1.03 (0.14–7.68) 0.974 1.11 (0.34–3.58) 0.866 1.30 (0.32–5.29) 0.716
ACE/ATII-inhibitor 0.76 (0.26–2.21) 0.608 0.22 (0.04–1.14) 0.071 1.33 (0.53–3.36) 0.549 0.76 (0.25–2.34) 0.631
β-blockers 0.36 (0.15–0.87) 0.023 0.39 (0.13–1.15) 0.088 0.49 (0.24–1.02) 0.057 0.55 (0.24–1.27) 0.163
AHI 1.02 (1.00–1.04) 0.137 1.00 (0.98–1.02) 0.896 1.01 (0.99–1.03) 0.284 1.00 (0.98–1.02) 0.815

LVEF, left ventricular ejection fraction; NYHA, New York Heart Association class; CSR, Cheyne-Stokes respiration; OSA, obstructive sleep apnea; ACE, angiotensin-converting enzyme inhibitor; ATII-inhibitor, angiotensin II receptor antagonist; AHI, apnea-hypopnea index.