{
  "version": "1.0.0",
  "feature_order": [
    "developmental_milestones",
    "iq_dq",
    "intellectual_disability",
    "language_disorder",
    "language_development",
    "dysmorphism",
    "behaviour_disorder",
    "neurological_exam"
  ],
  "categorical_features": {
    "developmental_milestones": {
      "type": "categorical",
      "mapping": {"N": 0, "G": 1, "M": 2, "C": 3},
      "description": "N=Normal, G=Global delay, M=Motor delay, C=Cognitive delay"
    },
    "intellectual_disability": {
      "type": "categorical",
      "mapping": {"N": 0, "F70.0": 1, "F71": 2, "F72": 3},
      "description": "N=None, F70.0=Mild (ICD-10), F71=Moderate, F72=Severe"
    },
    "language_disorder": {
      "type": "binary",
      "mapping": {"N": 0, "Y": 1},
      "description": "N=No, Y=Yes"
    },
    "language_development": {
      "type": "categorical",
      "mapping": {"N": 0, "delay": 1, "A": 2},
      "description": "N=Normal, delay=Delayed, A=Absent"
    },
    "dysmorphism": {
      "type": "binary",
      "mapping": {"NO": 0, "Y": 1},
      "description": "NO=No dysmorphic features, Y=Yes"
    },
    "behaviour_disorder": {
      "type": "binary",
      "mapping": {"N": 0, "Y": 1},
      "description": "N=No, Y=Yes"
    },
    "neurological_exam": {
      "type": "text_binary",
      "normal_value": "N",
      "encoding": {"normal": 0, "abnormal": 1},
      "description": "'N' for normal, any other non-empty string indicates abnormality"
    }
  },
  "numeric_features": {
    "iq_dq": {
      "type": "numeric",
      "min": 20,
      "max": 150,
      "normalization": "min_max",
      "description": "IQ or Developmental Quotient score"
    }
  }
}