Association between Red Blood Cell Distribution Width and Diabetic Retinopathy: A 5-Year Retrospective Case-Control Study

Table 3

Correlation analysis of RDW with other factors in DR patients.

Variable	r	value
Age (year)	0.030	0.703
BMI	−0.005	0.951
SBP (mmHg)	−0.042	0.594
DBP (mmHg)	−0.022	0.775
Diabetes duration (year)	0.049	0.529
WBC (×10^9)	0.042	0.588
HG (g/L)	−0.063	0.421
HbA1c (%)	0.119	0.126

Pearson correlation analysis was used. BMI: body mass index, SBP: systolic blood pressure, DBP: diastolic blood pressure, WBC: white blood cell, HG: hemoglobin, HbA1c: glycated hemoglobin A1c.