Table 3.

Pooled HR across DR stages.

Study	HR for NPDR (95% CI)	HR for PDR (95% CI)
Hsing 2020	3.28 (1.70–6.33)	5.77 (1.74–19.17)
Lin 2019	1.57 (1.29–1.91)	2.18 (1.71–2.78)
Park 2019	4.05 (2.99–5.49)	9.29 (6.57–13.15)
Pooled estimate 95.6% = I2	2.13 (1.82–2.50)	3.56 (2.93–4.33)