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NCT00561470 · OUTCOME

Overall Survival (OS)

Aflibercept Versus Placebo in Combination With Irinotecan and 5-FU in the Treatment of Patients With Metastatic Colorectal Cancer After Failure of an Oxaliplatin Based Regimen · Source last updated 2012-09-28

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
MEDIAN
Unit
months
Interval / dispersion
Inter-Quartile Range
Time frame
From the date of the first randomization until the study data cut-off date, 07 February 2011 (approximately three years)

What was measured

Overall Survival was the time interval from the date of randomization to the date of death due to any cause. Once disease progression was documented, participants were followed every 2 months for survival status, until death or until the study cutoff date, whichever came first. The final data cutoff date for the analysis of OS was the date when 863 deaths had occurred (07 February 2011). OS was estimated using the Kaplan-Meier method, and the Hazard Ratio was estimated using the Cox Proportional Hazard Model.

Analysis population: Intent-to-treat population (ITT) - all participants who gave informed consent and were randomized.

Groups in this outcome

Placebo/FOLFIRI

Participants with Metastatic Colorectal Cancer administered Placebo followed by FOLFIRI (Irinotecan, 5-Fluorouracil, and Leucovorin) every two weeks

Aflibercept/FOLFIRI

Participants with Metastatic Colorectal Cancer administered 4 mg/kg of Aflibercept, followed by FOLFIRI (Irinotecan, 5-Fluorouracil, and Leucovorin) every two weeks

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Placebo/FOLFIRI614
Aflibercept/FOLFIRI612

Analysis denominator · Events (Death)

GroupSource count
Placebo/FOLFIRI460
Aflibercept/FOLFIRI403

Reported measurements

Source class 1
Values in months · Interval/dispersion: Inter-Quartile Range
GroupValueSpreadLowerUpperComment
Placebo/FOLFIRI12.06Not reported6.8321.03Not reported
Aflibercept/FOLFIRI13.50Not reported7.6225.59Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    0.713
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95.34
    ci Upper Limit
    0.937
    estimate Comment
    Stratified on ECOG Performance Status (0 vs 1 vs 2) and prior Bevacizumab (yes vs no) according to IVRS using the Cox Proportional Hazard Model. Significance threshold was set to 0.0466 using the O'Brien-Fleming alpha spending function.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.0032
    p Value Comment
    Stratified Log-Rank test p-value. Stratified on ECOG Performance Status and prior Bevacizumab according to IVRS using the Cox Proportional Hazard Model. Significance threshold was set to 0.0466 using the O'Brien-Fleming alpha spending function.
    param Type
    Stratified Hazard Ratio
    param Value
    0.817
    statistical Method
    Stratified Log-Rank test
    tested Non Inferiority
    false
Complete source fields
analyses
  1. ci Lower Limit
    0.713
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95.34
    ci Upper Limit
    0.937
    estimate Comment
    Stratified on ECOG Performance Status (0 vs 1 vs 2) and prior Bevacizumab (yes vs no) according to IVRS using the Cox Proportional Hazard Model. Significance threshold was set to 0.0466 using the O'Brien-Fleming alpha spending function.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    p Value
    0.0032
    p Value Comment
    Stratified Log-Rank test p-value. Stratified on ECOG Performance Status and prior Bevacizumab according to IVRS using the Cox Proportional Hazard Model. Significance threshold was set to 0.0466 using the O'Brien-Fleming alpha spending function.
    param Type
    Stratified Hazard Ratio
    param Value
    0.817
    statistical Method
    Stratified Log-Rank test
    tested Non Inferiority
    false
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        6.83
        upper Limit
        21.03
        value
        12.06
      2. group Id
        OG001
        lower Limit
        7.62
        upper Limit
        25.59
        value
        13.50
denom Units Selected
Participants
denoms
  1. counts
    1. group Id
      OG000
      value
      614
    2. group Id
      OG001
      value
      612
    units
    Participants
  2. counts
    1. group Id
      OG000
      value
      460
    2. group Id
      OG001
      value
      403
    units
    Events (Death)
description
Overall Survival was the time interval from the date of randomization to the date of death due to any cause. Once disease progression was documented, participants were followed every 2 months for survival status, until death or until the study cutoff date, whichever came first. The final data cutoff date for the analysis of OS was the date when 863 deaths had occurred (07 February 2011). OS was estimated using the Kaplan-Meier method, and the Hazard Ratio was estimated using the Cox Proportional Hazard Model.
dispersion Type
Inter-Quartile Range
groups
  1. description
    Participants with Metastatic Colorectal Cancer administered Placebo followed by FOLFIRI (Irinotecan, 5-Fluorouracil, and Leucovorin) every two weeks
    id
    OG000
    title
    Placebo/FOLFIRI
  2. description
    Participants with Metastatic Colorectal Cancer administered 4 mg/kg of Aflibercept, followed by FOLFIRI (Irinotecan, 5-Fluorouracil, and Leucovorin) every two weeks
    id
    OG001
    title
    Aflibercept/FOLFIRI
param Type
MEDIAN
population Description
Intent-to-treat population (ITT) - all participants who gave informed consent and were randomized.
reporting Status
POSTED
time Frame
From the date of the first randomization until the study data cut-off date, 07 February 2011 (approximately three years)
title
Overall Survival (OS)
type
PRIMARY
type Units Analyzed
Events (Death)
unit Of Measure
months

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Preserved source evidence · Not medical advice