{
  "sampled": 6000,
  "categories": [
    [
      "other/unspecified",
      2954
    ],
    [
      "enrollment",
      1250
    ],
    [
      "funding",
      551
    ],
    [
      "efficacy",
      393
    ],
    [
      "business",
      344
    ],
    [
      "protocol",
      322
    ],
    [
      "covid",
      126
    ],
    [
      "safety",
      60
    ]
  ]
}