Variable Mild NPDR n= 45 Moderate NPDR n=45 Severe NPDR n=35 p value
Age (year)
(Mean, SD)
56.91 (5.34) 55.31 (5.11) 56.09 (5.27) 0.35a
Gender (n, %)
Male
Female
24 (30.9)
21 (42.1)
24 (35.3)
21 (36.8)
19 (33.8)
16 (21.1)
0.23a
Ethnic (n, %)
Malay
Chinese
Indian
39 (33.9)
5 (62.5)
1 (50.0)
42 (36.5)
3 (37.5)
0
34 (29.6)
0
1 (50.0)
0.26b

RNFL thickness (μm)
(Mean/ SD)

700.27 (215.44) 738.24 (200.30) 762.60 (209.57) 0.40a
HbA1c (Mean/SD) 9.57 (2.17) 9.87 (2.16) 10.41 (2.78) 0.29a

Oxidised LDL (Median/IQR)

297.40 (766.20) 259.74 (731.40) 90.18 (325.50) 0.03c
aOne –way Anova test, bFisher exact test, cKruskal-Wallis test, p value < 0.05 (significant)
Table 1: Distribution of age, gender, ethnic group, mean RNFL thickness, HbA1c and Oxidised LDL level in NPDR.