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NCT01696994 · OUTCOME

T1 CA-125 Screening Results

Screening for Ovarian Cancer in Older Patients (PLCO Screening Trial) · Source last updated 2026-07-24

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

Measure
NUMBER
Unit
Participants
Interval / dispersion
Not reported
Time frame
T1 (one year after entry)

What was measured

Cancer Antigen 125 (CA-125) result.

Analysis population: Females in the Ovarian Screening arm (excluding females with no ovaries at baseline) who had a CA-125 screen at T1 were analyzed.

Groups in this outcome

Ovarian Screening

Participants undergo blood sample collection for CA-125 analysis at baseline annually for 5 years. Participants also undergo an OVR (discontinued in December 1998) and TVU at baseline and annually for 3 years.

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

Analysis denominator · Participants

GroupSource count
Ovarian Screening27514

Reported measurements

Negative (<35 U/mL)
Values in Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Ovarian Screening27035Not reportedNot reportedNot reportedNot reported
Positive (>= 35 U/mL)
Values in Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Ovarian Screening433Not reportedNot reportedNot reportedNot reported
Inadequate screen
Values in Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Ovarian Screening46Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        27035
    title
    Negative (<35 U/mL)
  2. categories
    1. measurements
      1. group Id
        OG000
        value
        433
    title
    Positive (>= 35 U/mL)
  3. categories
    1. measurements
      1. group Id
        OG000
        value
        46
    title
    Inadequate screen
denoms
  1. counts
    1. group Id
      OG000
      value
      27514
    units
    Participants
description
Cancer Antigen 125 (CA-125) result.
groups
  1. description
    Participants undergo blood sample collection for CA-125 analysis at baseline annually for 5 years. Participants also undergo an OVR (discontinued in December 1998) and TVU at baseline and annually for 3 years.
    id
    OG000
    title
    Ovarian Screening
param Type
NUMBER
population Description
Females in the Ovarian Screening arm (excluding females with no ovaries at baseline) who had a CA-125 screen at T1 were analyzed.
reporting Status
POSTED
time Frame
T1 (one year after entry)
title
T1 CA-125 Screening Results
type
SECONDARY
unit Of Measure
Participants

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice