Acute-Onset Vitreous Hemorrhage of Unknown Origin before Vitrectomy: Causes and Prognosis
Table 4
Risk scoring system used to predict poor visual outcomes after vitrectomy in patients with acute-onset vitreous hemorrhage (VH) of preoperatively unknown origin.
Categories
Reference value ()
Beta
Beta( − )
Point = beta( − )/ [Clarify]
Score
Age
24–40
33.5 ()
−0.004
0
0
0
40–49
44.5
−0.043
−1.0000854
−1
50–59
54.5
−0.082
−1.9092539
−2
60–69
64.5
−0.121
−2.8184224
−3
70
78.5
−0.176
−4.0912583
−4
Preoperative LogMAR BCVA in affected eye
0–0.5
0.25 ()
−0.112
0
0
0
0.5–1.0
0.75
−0.056
−1.3076873
−1
1.0–1.5
1.25
−0.112
−2.6153746
−3
1.5–2.0
1.75
−0.169
−3.9230619
−4
2.0–2.5
2.25
−0.225
−5.2307491
−5
2.5–3.0
2.75
−0.281
−6.5384364
−7
Preoperative LogMAR BCVA in the fellow eye
0–0.5
0.25 ()
−0.096
0
0
0
0.5–1.0
0.75
−0.048101477
−1.118639
−1
1.0–1.5
1.25
−0.096202955
−2.237278
−2
1.5–2.0
1.75
−0.144304432
−3.355917
−3
2.0–2.5
2.25
−0.19240591
−4.474556
−4
2.5–3.0
2.75
−0.240507387
−5.5931951
−6
Drusen in the fellow eye
no
0 ()
−0.358
0
0
0
yes
1
−0.358
−8.3255814
−8
BCVA, best-corrected visual acuity. : reference value. Beta: beta coefficients used in the logistic regression model. : number of regression units that correspond to 1 point. We let = 0.043 reflect the increase in risk associated with 10-year increases in age.
