Impaired antibody responses were observed in patients with type 2 diabetes mellitus after receiving the inactivated COVID-19 vaccines

Table 4 Multiple linear regression analysis for NAbs in T2DM patients

Variables	β	95% CI	P value
Age	− 0.170	(− 0.047, 0.024)	0.509
Sex (female)	0.501	(0.234, 1.872)	0.014
BMI	− 0.475	(− 0.337, − 0.030)	0.021
FPG	− 0.071	(− 0.200, 0.146)	0.751
HbA1c	− 0.122	(− 0.272, 0.154)	0.569
Insulin (use)	− 0.109	(− 1.247, 0.789)	0.645
Days after full-course vaccination	− 0.210	(− 0.020, 0.006)	0.264
Other independent chronic diseases (with)	− 0.106	(− 1.000, 0.577)	0.583
Albumin	0.253	(− 0.015, 0.083)	0.162
Creatinine	− 0.044	(− 0.004, 0.003)	0.814

BMI body mass index, FPG Fasting Plasma Glucose, HbA1c Hemoglobin A1c, CI confidential interval, β standard regression coefficient, D–W Durbin–Waston: 2.055
p < 0.05 was considered statistically significant

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