Prevalence of diabetes and diabetic retinopathy in population aged ≥50 years in Howrah, West Bengal
In the district Howrah, 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 13.2%.
Among the diabetics the prevalence of diabetic retinopathy was 17.6%. Prevalence of maculopathy was 5.4% and that of any retinopathy or maculopathy was 17.6%. Prevalence of sight threatening DR was 4.2%.
Table: Prevalence of known and new diabetes in population aged ≥50 years in Howrah, West Bengal
Diabetics Examined
Male(N=1075)
Female(N=1586)
Total(N=2661)
n
%
n
%
n
%
Known diabetes
100
9.3
130
8.2
230
8.6
Newly diagnosed diabetes
53
4.9
68
4.3
121
4.5
Total
153
14.2
198
12.5
351
13.2
Table: Gender & Age wise Prevalence of any diabetic retinopathy among diabetics population aged ≥50 years in Howrah, West Bengal
Demographic Variable
Diabetic assessed for DR
DR cases
Prevalence %
Gender
Male
133
18
13.5
Female
179
37
20.7
Age Group
50 – 59
160
28
17.5
60 – 69
103
22
21.4
70 – 79
39
4
10.3
80+
10
1
10.0
All ages
312
55
17.6
Table: Prevalence of diabetic retinopathy, maculopathy and sight threatening diabetic retinopathy (Scottish classification) among diabetics population aged ≥50 years in Howrah, West Bengal