Mean Platelet Volume in Patients with Obstructive Sleep Apnea and Its Relationship with Simpler Heart Rate Derivatives

Table 4

Independent predictors of mean platelet volume in univariate and multivariate linear regression analysis in OSA groups.

Variables	Unstandardized		value	95% confidence interval
Univariate
Age		−0.317	0.752	From −0.020 to 0.015
Body mass index		−0.650	0.518	From −0.047 to 0.024
Fasting glucose		−1.219	0.227	From −0.055 to 0.013
Hemoglobin		−0.065	0.559	From −0.200 to 0.019
RDW		0.808	0.421	From −.083 to 0.196
Fibrinogen		−0.090	0.546	From −0.002 to 0.005
Platelet count		−2.280	0.025	From −0.008 to 0.000
Neutrophil		3.328	−0.482	From −0.012 to 0.007
Lymphocyte		0.373	0.710	From −0.028 to 0.041
Neutrophil/lymphocyte		−1.415	0.161	From −0.436 to 0.074
C reactive protein		−0.400	0.690	From −0.026 to 0.017
Tryglyceride		0.595	0.554	From −0.004 to 0.002
LDL-cholesterol		−0.740	0.461	From −0.008 to 0.004
HDL-cholesterol		−0.807	0.423	From −0.027 to 0.012
Min. HR-PSG		−1.157	0.251	From −0.038 to 0.010
Max. HR-PSG		0.265	0.058	From 000 to 0.022
Min. HR–Max. HR-PSG		1.097	0.276	From −0.05 to 0.018
Mean HR		−0.882	0.380	From −0.36 to 0.014
HRPI-PSG		0.273	0.013	From 0.143 to 1.172
Apnea hypopnea index		−0.968	0.336	From −0.014 to 0.005
Duration of OSA		−1.219	0.227	From −0.055 to 0.013
SaO2 < 90%, PRTS		2.51	0.014	From 0.681 to 5.81
Multivariate
Platelet count		−2.190	0.034	From −0.008 to −0.001
SaO2 < 90%, PRTS		2.11	0.038	From 0.167 to 5.69
Max. HR		0.203	0.840	From −0.023 to 0.028
Min. HR–Max. HR-PSG		−0.090	0.929	From −0.035 to 0.032
HRPI-PSG		0.234	0.396	From −0.797 to 1.978

Abbreviations: Min: minimum; Max: maximum; HRPI-PSG; heart rate performance index-polysomnography; OSA: obstructive sleep apnea; PRTS: percentage of recording time spent; SaO₂: arterial oxygen saturation; RDW: red blood cell distribution width.