Table 2.

Risk ratio for conducting fundus examination

	Risk ratio	95% CI
Female	1.18	1.17–1.18
Age (years)
20–29	–	–
30–39	1.00	0.97–1.02
40–49	1.00	0.98–1.03
50–59	1.07	1.04–1.09
60–69	1.30	1.27–1.32
70–79	1.59	1.56–1.62
≥80	1.53	1.50–1.56
Antidiabetic drug
Insulin (+)	1.38	1.37–1.38
Diabetic medical facilities
Education certified facility of JDS	1.18	1.18–1.18
No. beds (diabetic medical facilities)
0–19	‐	‐
20–99	0.99	0.99–1.00
100–199	1.05	1.05–1.06
≥200	1.11	1.11–1.11

CI, confidence interval; JDS, Japan Diabetes Society.

Total n = 4,388,234.