Table 3.
Unadjusted single regression analysis about the relationships between clinical characteristics and flow-mediated vasodilation
| Variable | β | P value |
|---|---|---|
| Age | 0.01 | 0.94 |
| Sex | 0.12 | 0.51 |
| BMI | −0.26 | 0.07 |
| Smoking | 0.04 | 0.77 |
| Hypertension | −0.25 | 0.07 |
| Diabetes mellitus | −0.20 | 0.17 |
| Dyslipidemia | −0.24 | 0.12 |
| ARB | −0.38 | 0.08 |
| ACE-I | 0.16 | 0.58 |
| Ca channel blocker | −0.35 | 0.14 |
| SBP | −0.15 | 0.30 |
| DBP | 0.17 | 0.25 |
| HR | 0.02 | 0.91 |
| AHI | 0.06 | 0.68 |
| OAI | 0.20 | 0.18 |
| CAI | −0.09 | 0.52 |
| HI | −0.15 | 0.29 |
| 3%ODI | −0.13 | 0.37 |
| Averaged SpO2 | 0.29 | 0.11 |
| Lowest SpO2 | 0.10 | 0.70 |
| SpO2 < 90% | −0.10 | 0.48 |
| Arterial diameter | −0.23 | 0.11 |
| TDS | −0.47 | 0.001 |
Abbreviations: β, standardizing coefficient; BMI, body mass index; ARB, angiotensin receptor blocker; ACE-I, angiotensin-converting enzyme inhibitor; Ca, calcium; SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate; AHI, apnea-hypopnea index; OAI, obstructive apnea index; CAI, central apnea index; HI, hypopnea index; ODI, oxygen desaturation index; SpO2, arterial oxygen saturation; TDS, time desaturation summation index.