Table 3

Baseline distributions and 4-year incidence of PDF and SVL by time periods and baseline retinopathy status

1975–1985
1986–2008
κn/NMeta-analyzed (%)Mean (95%CI)κn/NMeta-analyzed (%)Mean (95%CI)
Baseline distributions, no retinopathy at baseline
    GHb (%)12,36611.7 (10.2–13.2)36359.2 (8.3–10.1)
    Systolic blood pressure (mmHg)12,366136.0 (114.4–157.6)2600131.0 (113.4–148.7)
    Diastolic blood pressure (mmHg)2,36679.0 (78.6–79.5)260078.8 (73.1–84.5)
    Retinopathy level (%)
        No retinopathy21,447/3,31943.65882/1,16475.8
        NPDR21,529/3,31946.15237/1,16420.4
        PDR2339/3,31910.2533/1,1642.8
    Presence of DME (%)378/77510.1
4-year incidence
    PDR (%)2142/2,5706.3 (1.6–10.9)526/1,1382.6 (0.2–5.0)
    SVL (%)141/1,8232.0 (0.0–3.9)10/1740.0 (0.0–0.8)
Baseline distributions, any retinopathy at baseline
    GHb (%)11607.1 (6.8–7.5)
    Systolic blood pressure (mmHg)1160147.0 (144.2–149.8)
    Diastolic blood pressure (mmHg)
    Retinopathy level (%)
        No retinopathy10/1600.0
        NPDR2164/28557.5134/16021.3
        PDR2121/28542.519/1605.6
    Presence of DME (%)2602/195330.8
4-year incidence
    PDR (%)2211/64439.7 (21.2–58.3)
    SVL (%)2279/1,14417.5 (0.0–38.1)18/1305.4 (0.0–15.1)
  • Data are κ (number of studies), n (total number of patients at risk at each time point), percent, or mean (95% CI).