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Table 2 Multivariate relations between sleep problems and neuroendocrine measures

From: Association of sleep problems with neuroendocrine hormones and coagulation factors in patients with acute myocardial infarction

Entered variables Epinephrine Norepinephrine Cortisol
Partial corr. P Partial corr. P Partial corr. P
Age −0.183 0.016 0.050 0.516 −0.087 0.254
Male sex −0.079 0.302 0.080 0.295 −0.031 0.690
Education −0.092 0.230 −0.003 0.970 −0.051 0.504
Charlson index −0.240 0.001 −0.126 0.098 −0.111 0.147
Hypertension history 0.159 0.037 0.088 0.247 0.139 0.068
High cholesterol history 0.130 0.089 −0.070 0.357 − 0.002 0.978
Depression history 0.070 0.360 0.054 0.479 0.007 0.928
Body mass index −0.053 0.489 0.178 0.019 0.101 0.187
Smoking −0.047 0.541 −0.021 0.786 0.030 0.693
Alcohol consumption 0.026 0.731 −0.126 0.098 0.025 0.747
Physical activity −0.149 0.051 −0.031 0.688 0.043 0.572
Previous MI 0.140 0.067 0.001 0.994 0.074 0.333
ST-elevation MI 0.150 0.049 0.172 0.024 0.081 0.289
Stenotic coronary arteries 0.074 0.334 0.116 0.130 0.232 0.002
GRACE risk score 0.234 0.002 0.131 0.085 0.157 0.039
Acute distress 0.210 0.006 0.170 0.025 0.029 0.706
Sleep difficulties −0.054 0.482 −0.172 0.024 0.094 0.217
High risk of OSA −0.185 0.015 −0.150 0.049 −0.251 0.001
Model statistic R2 = 0.295
F18,171 = 3.97
P < 0.001
R2 = 0.212
F18,171 = 2.55
P = 0.001
R2 = 0.174
F18,171 = 2.00
P = 0.012
  1. Linear regression model with all variables entered in one block. Significant correlation coefficients (Partial corr.) and P-values are given in bold
  2. GRACE Global Registry of Acute Cardiac Events, MI myocardial infarction, OSA obstructive sleep apnea