Prevalence of diabetes and diabetic retinopathy in population aged ≥50 years in Thrissur, Kerala
In the district Thrissur, diabetic retinopathy (DR) survey was conducted along with the RAAB survey using the RAAB6+DR methodology. All the known diabetics and newly diagnosed diabetics (random blood sugar ≥ 200mg/dl) aged 50 years and above were assessed for DR. Scottish classification was used for DR grading. It was found that prevalence of total diabetics in population aged ≥50 years was 29.4%.
Among the diabetics the prevalence of diabetic retinopathy was 22.3%. Prevalence of maculopathy was 10.4% and that of any retinopathy or maculopathy was 22.3%. Prevalence of sight threatening DR was 5.1%.
Table: Prevalence of known and new diabetes in population aged ≥50 years in Thrissur, Kerala
Diabetics Examined
Male(N=1035)
Female(N=1685)
Total(N=2720)
n
%
n
%
n
%
Known diabetes
276
26.7
426
25.3
702
25.8
Newly diagnosed diabetes
36
3.5
62
3.7
98
3.6
Total
312
30.1
488
29.0
800
29.4
Table: Gender & Age wise Prevalence of any diabetic retinopathy among diabetics population aged ≥50 years in Thrissur, Kerala
Demographic Variable
Diabetic assessed for DR
DR cases
Prevalence %
Gender
Male
305
71
23.3
Female
474
103
21.7
Age Group
50 – 59
284
47
16.5
60 – 69
291
67
23.0
70 – 79
162
45
27.8
80+
42
15
35.7
All ages
779
174
22.3
Table: Prevalence of diabetic retinopathy, maculopathy and sight threatening diabetic retinopathy (Scottish classification) among diabetics population aged ≥50 years in Thrissur, Kerala