{
  "participant_id": {
    "Description": "Unique participant identifier"
  },
  "original_id": {
    "Description": "(TODO: add description)"
  },
  "center_id": {
    "Description": "Recruiting center identifier",
    "Levels": {
      "UNIPD": "University of Padova",
      "UNIPD-PD": "University of Padova, Parkinson's Disease cohort",
      "ASUFC": "Azienda Sanitaria Universitaria Friuli Centrale",
      "UNITO": "University of Turin",
      "UKE": "Universit\u00e4tsklinikum Hamburg-Eppendorf",
      "UKLFR": "Universit\u00e4tsklinikum Freiburg",
      "CUB": "Charit\u00e9 - Universit\u00e4tsmedizin Berlin",
      "HSR": "San Raffaele Hospital, Milan",
      "UCL-UK": "University College London",
      "UCAM": "University of Cambridge",
      "APHP": "Assistance Publique - H\u00f4pitaux de Paris",
      "FIDIS": "Health Research Institute of Santiago de Compostela"
    }
  },
  "disease_id": {
    "Description": "Disease or condition identifier",
    "Levels": {
      "ST": "Stroke",
      "GM": "Glioma",
      "PD": "Parkinson's Disease",
      "HC": "Healthy Control"
    }
  },
  "disease_notes": {
    "Description": "Additional notes on the disease or condition"
  },
  "dataset": {
    "Description": "Dataset identifier or name"
  },
  "age": {
    "Description": "Age of the participant at the time of inclusion",
    "Units": "years",
    "MinimumValue": 0,
    "MaximumValue": 140
  },
  "sex": {
    "Description": "Biological sex of the participant",
    "Levels": {
      "M": "Male",
      "F": "Female"
    }
  },
  "education": {
    "Description": "Years of formal education",
    "Units": "years",
    "MinimumValue": 0,
    "MaximumValue": 30
  },
  "MGMT": {
    "Description": "MGMT promoter methylation status",
    "Levels": {
      "not_methylated": "Not methylated",
      "methylated": "Methylated",
      "unmethylated": "Unmethylated"
    }
  },
  "IDH1": {
    "Description": "IDH1 mutation status",
    "Levels": {
      "wild-type": "Wild-type",
      "mutated": "Mutated"
    }
  },
  "death": {
    "Description": "Whether the participant deceased during the study"
  },
  "lesion_side": {
    "Description": "Lateralization of the lesion",
    "Levels": {
      "left": "Left hemisphere",
      "right": "Right hemisphere",
      "bilateral": "Bilateral",
      "unilateral": "Unilateral"
    }
  },
  "clinical_date": {
    "Description": "Date of clinical assessment (ISO 8601 format)"
  },
  "OS_months": {
    "Description": "Overall survival"
  },
    "FU_length_months": {
    "Description": "Follow-up length in months"
  },
    "OS_censored": {
    "Description": "Overall survival censored"
  },
    "grading": {
    "Description": "Grading of the tumor"
  },
    "histology": {
    "Description": "Histology of the tumor"
  }
}