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NCT01696994 · BASELINE

Baseline characteristics

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.

denoms
  1. counts
    1. group Id
      BG000
      value
      39111
    2. group Id
      BG001
      value
      39105
    3. group Id
      BG002
      value
      78216
    units
    Participants
groups
  1. description
    Participants receive standard medical care. Participants complete a baseline questionnaire (BQ) at entry and a dietary history questionnaire (DHQ) during study years 0-6.
    id
    BG000
    title
    Control
  2. description
    Participants undergo blood sample collection for Cancer Antigen 125 (CA-125) analysis at baseline and annually for 5 years. Participants also undergo an OVR (discontinued in December 1998) and TVU at baseline and annually for 3 years.
    id
    BG001
    title
    Ovarian Screening
  3. description
    Total of all reporting groups
    id
    BG002
    title
    Total
measures
  1. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          value
          0
        2. group Id
          BG001
          value
          0
        3. group Id
          BG002
          value
          0
        title
        <=18 years
      2. measurements
        1. group Id
          BG000
          value
          25222
        2. group Id
          BG001
          value
          25233
        3. group Id
          BG002
          value
          50455
        title
        Between 18 and 65 years
      3. measurements
        1. group Id
          BG000
          value
          13889
        2. group Id
          BG001
          value
          13872
        3. group Id
          BG002
          value
          27761
        title
        >=65 years
    param Type
    COUNT_OF_PARTICIPANTS
    title
    Age, Categorical
    unit Of Measure
    Participants
  2. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          spread
          5.4
          value
          62.5
        2. group Id
          BG001
          spread
          5.4
          value
          62.5
        3. group Id
          BG002
          spread
          5.4
          value
          62.5
    dispersion Type
    STANDARD_DEVIATION
    param Type
    MEAN
    title
    Age, Continuous
    unit Of Measure
    years
  3. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          value
          39111
        2. group Id
          BG001
          value
          39105
        3. group Id
          BG002
          value
          78216
        title
        Female
      2. measurements
        1. group Id
          BG000
          value
          0
        2. group Id
          BG001
          value
          0
        3. group Id
          BG002
          value
          0
        title
        Male
    param Type
    COUNT_OF_PARTICIPANTS
    title
    Sex: Female, Male
    unit Of Measure
    Participants
  4. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          value
          39111
        2. group Id
          BG001
          value
          39105
        3. group Id
          BG002
          value
          78216
      title
      United States
    param Type
    NUMBER
    title
    Region of Enrollment
    unit Of Measure
    participants
Complete source fields
denoms
  1. counts
    1. group Id
      BG000
      value
      39111
    2. group Id
      BG001
      value
      39105
    3. group Id
      BG002
      value
      78216
    units
    Participants
groups
  1. description
    Participants receive standard medical care. Participants complete a baseline questionnaire (BQ) at entry and a dietary history questionnaire (DHQ) during study years 0-6.
    id
    BG000
    title
    Control
  2. description
    Participants undergo blood sample collection for Cancer Antigen 125 (CA-125) analysis at baseline and annually for 5 years. Participants also undergo an OVR (discontinued in December 1998) and TVU at baseline and annually for 3 years.
    id
    BG001
    title
    Ovarian Screening
  3. description
    Total of all reporting groups
    id
    BG002
    title
    Total
measures
  1. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          value
          0
        2. group Id
          BG001
          value
          0
        3. group Id
          BG002
          value
          0
        title
        <=18 years
      2. measurements
        1. group Id
          BG000
          value
          25222
        2. group Id
          BG001
          value
          25233
        3. group Id
          BG002
          value
          50455
        title
        Between 18 and 65 years
      3. measurements
        1. group Id
          BG000
          value
          13889
        2. group Id
          BG001
          value
          13872
        3. group Id
          BG002
          value
          27761
        title
        >=65 years
    param Type
    COUNT_OF_PARTICIPANTS
    title
    Age, Categorical
    unit Of Measure
    Participants
  2. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          spread
          5.4
          value
          62.5
        2. group Id
          BG001
          spread
          5.4
          value
          62.5
        3. group Id
          BG002
          spread
          5.4
          value
          62.5
    dispersion Type
    STANDARD_DEVIATION
    param Type
    MEAN
    title
    Age, Continuous
    unit Of Measure
    years
  3. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          value
          39111
        2. group Id
          BG001
          value
          39105
        3. group Id
          BG002
          value
          78216
        title
        Female
      2. measurements
        1. group Id
          BG000
          value
          0
        2. group Id
          BG001
          value
          0
        3. group Id
          BG002
          value
          0
        title
        Male
    param Type
    COUNT_OF_PARTICIPANTS
    title
    Sex: Female, Male
    unit Of Measure
    Participants
  4. classes
    1. categories
      1. measurements
        1. group Id
          BG000
          value
          39111
        2. group Id
          BG001
          value
          39105
        3. group Id
          BG002
          value
          78216
      title
      United States
    param Type
    NUMBER
    title
    Region of Enrollment
    unit Of Measure
    participants

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Preserved source evidence · Not medical advice