Slakter 2006.
Methods | Method of randomization: Not explicitly reported (“randomized”). Method of allocation concealment: Not clearly reported. Masking of participants and care-givers: Participants were masked (covered infusion-tubing, similar set of instructions as indicated for PDT. Physicians administering the medication were not. Masking of outcome assessment: Yes, outcome assessors were masked. Losses to follow-up: Only 3 participants in the PDT group and none in the anecortave acetate group were lost to follow-up. Data from 18.6% in anecortave acetate group and 17.6% in PDT group were not available for 12-month analyses. Intention-to-treat analysis: The trial was designed as a non-inferiority study and the authors reported a per-protocol analysis as well as an intention-to-treat with the last observation carried forward. Reported sample size calculation: Yes, an a priori sample size calculation was reported. 261 per group to provide 90% coverage probability to achieve non-inferiority margin of 7% points. |
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Participants | # randomized in treatment arm: 263 #randomized in control arm: 267 Inclusion criteria:
Exclusion criteria:
Age: Average age was 76.6 years (51-96 years), group-wise data not provided. Gender: Overall, 52% were females, no group-wise data available Equivalence of baseline characteristics: Age, gender, mean baseline visual acuity were similar at baseline |
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Interventions | Treatment: Posterior juxtascleral depot administration of 15 mg anecortave acetate every 6 months, a sham PDT every 3 months if there was leakage on fluorescein angiogram. Control: PDT, administered every 3 months and influenced by investigator's decision based on fluorescein angiographic evidence of leakage, and sham anecortave acetate at baseline and at 6 months. |
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Outcomes | Primary outcome: Visual acuity, measured as loss of fewer than 3 lines of vision at month 12. Visual acuity was measured at 2 meters using the ETDRS and TAP study methodology. Visual acuity was also reported as logMAR scores. Secondary outcomes: Safety outcomes/adverse events. |
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Notes | Country: USA, Canada, Europe, Israel, Australia. Time of study: Not reported. |
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Risk of bias | ||
Item | Authors' judgement | Description |
Allocation concealment? | Unclear | B - Unclear |
AMD: age-related macular degeneration
BCVA: best corrected visual acuity
CNV: choroidal neovascularization
ETDRS: early treatment diabetic retinopathy study
PDT: photodynamic therapy
TAP: treatment of age-related macular degeneration with photodynamic therapy