Table 3.

Multivariate linear regression with glycated hemoglobin (HbA1c) as dependent variable (R²: 0.165, p < 0.001)

Variable	Beta	95% CI for beta	p
Age (years)	0.008	0.002 to 0.013	0.005
Sex (male)	− 0.034	− 0.112 to 0.045	0.398
BMI	0.015	0.006 to 0.024	0.001
WBC count	0.021	− 0.001 to 0.042	0.063
PSQI	0.127	0.054 to 0.200	0.001
Working status (a-NSW)	0.053	0.006 to 0.101	0.028

BMI, body mass index; WBC, white blood cells; PSQI, Pittsburgh Sleep Quality Index questionnaire; a-NSW, active night shift workers