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

Table 2

Comparison of RDW by age and gender in DR, DM, and control group.

		Control	Diabetes mellitus	Diabetic retinopathy	F value	value
Male	<=58	12.22 ± 0.58 (n = 38)	12.21 ± 0.56 (n = 33)	12.95 ± 0.87 (n = 37)	11.31	<0.001^a,b
	>58	12.41 ± 0.53 (n = 39)	12.52 ± 0.61 (n = 28)	13.11 ± 1.70 (n = 48)	3.52	<0.001^a,b
Female	<=58	12.46 ± 0.42 (n = 44)	12.93 ± 0.82 (n = 28)	12.95 ± 0.73 (n = 43)	7.46	0.001^a,c
	>58	12.53 ± 0.46 (n = 49)	12.99 ± 1.30 (n = 42)	13.34 ± 1.11 (n = 39)	9.71	<0.001^a,b,c

Data are expressed as mean ± standard deviation (SD). One-way ANOVA was used. ^a for the difference between DR group and control group (1-way ANOVA with the LSD post hoc test). ^b for the difference between DR group and DM group (1-way ANOVA with the LSD post hoc test). ^c for the difference between DM group and control group (1-way ANOVA with the LSD post hoc test).