Joint Assessment of Intended and Unintended Effects of Medications: An Example Using Vascular Endothelial Growth Factor Inhibitors for Neovascular Age-Related Macular Degeneration
Table 1
Model inputs, intended and unintended effects.
Intended Effects
Pegaptanib ()1
Ranibizumab ()2
UC Combined () 3
Loss of 6 lines ETDRS VA
28 (9.5)
3 (0.8)
118 (39.9)
Loss of 3 but 6 lines ETDRS VA
60 (20.4)
15 (4.0)
153 (51.7)
Loss of 0 but 3 lines ETDRS VA
108 (36.7)
83 (21.9)
227 (76.7)
Gain of 0 but 3 lines ETDRS VA
80 (27.2)
140 (36.9)
153 (51.7)
Gain of 3 lines ETDRS VA
18 (6.1)
138 (36.4)
26 (8.8)
Unintended Effects
Nonfatal MI, % (SE)
0.3 (0.378)
1.1 (0.525)
0.6 (0.295)
RR (95% CI) Nonfatal MI, versus UC
0.5 (0.0–5.5)
2.0 (0.4–10.9)
—
Nonfatal CVA, % (SE)
1.0 (0.586)
1.1 (0.525)
0.4 (0.255)
RR (95% CI) Nonfatal CVA, versus UC
3.0 (0.3–28.9)
2.0 (0.4–10.9)
—
Nonfatal severe NOH, % (SE)
1.0 (0.653)
1.5 (0.614)
0.6 (0.295)
RR (95% CI) Nonfatal severe NOH, versus UC
1.0 (0.2–4.9)
5.5 (0.7–46.3)
—
1From VISION Study [6] of 0.3 mg pegaptanib, and VISION-study safety and efficacy summaries provided by Pfizer Inc. 2Pooled estimates from MARINA and ANCHOR [7, 8] studies of 0.5 mg ranibizumab. 3Pooled estimates from the control arms of the VISION [6], ANCHOR and MARINA [7, 8] studies. ETDRS VA: Early Treatment of Diabetic Retinopathy Study visual acuity; MI: myocardial infarction; SE-standard error; 95%CI: 95% confidence interval; UC: Usual care; NOH: nonocular hemorrhage.