Analysis of sleep characteristics and clinical outcomes of 139 adult patients with infective endocarditis after surgery

Table 4 Univariable logistic regression analysis exploring potential risk factors for disturbed sleep quality at 6 mo after surgery in the whole data set (n = 139)

Variables	B	P value	OR	95%CI
Gender (male)	0.134	0.731	1.143	0.534-2.448
Age (yr)	0.084	< 0.0011	1.087	1.052-1.123
BMI (kg/m2)	0.056	0.294	1.058	0.952-1.175
Duration of CICU stay (d)	0.243	0.052	1.275	0.997-1.630
Preoperative WBC (× 109/L)	0.019	0.749	1.019	0.909-1.141
Postoperative WBC (× 109/L)	-0.004	0.870	0.996	0.952-1.043
Preoperative Hb (g/L)	0.012	0.135	1.012	0.996-1.028
Postoperative Hb (g/L)	0.008	0.499	1.008	0.984-1.033
Preoperative Alb (g/L)	0.030	0.364	1.030	0.966-1.098
Postoperative Alb (g/L)	-0.053	0.217	0.949	0.873-1.031
Preoperative CRP (mg/L)	-0.008	0.193	0.992	0.979-1.004
Postoperative CRP (mg/L)	-0.004	0.560	0.996	0.984-1.009
Postoperative PCT (ng/ml)	-0.099	0.440	0.906	0.705-1.164
Vegetation ≥ 10 mm	-0.025	0.946	0.976	0.479-1.989
Multivalve involvement	-0.971	0.126	0.379	0.109-1.315
Complication of embolism	0.225	0.600	1.252	0.540-2.902
Not using sleep medication	-0.208	0.582	0.812	0.388-1.702
PSQI during hospitalization (points)	0.464	< 0.0011	1.590	1.359-1.860
ESS during hospitalization (points)	0.039	0.126	1.040	0.944-1.146

¹Factors that were included in the subsequent multivariable analysis. Data were analyzed in univariable logistic regression. BMI: Body mass index; CICU: Cardiac intensive care unit; WBC: White blood cell; Hb: Hemoglobin; Alb: Albumin; CRP: C-reactive protein; PCT: Procalcitonin; PSQI: Pittsburgh Sleep Quality Index; ESS: Epworth Sleepiness Scale; OR: Odds ratio; CI: Confidence interval.