"Bradford Hill criteria" meaning in English

{
  "etymology_text": "Established by Austin Bradford Hill (1897–1991), English epidemiologist and statistician, in 1965.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A group of nine principles, widely used in public health research, that can be useful in establishing epidemiologic evidence of a causal relationship between a presumed cause and an observed effect."
      ],
      "id": "en-Bradford_Hill_criteria-en-noun-UNMsC0Y9",
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          "evidence",
          "evidence"
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          "causal",
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        [
          "presume",
          "presume"
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          "cause"
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        [
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          "effect",
          "effect"
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      "raw_glosses": [
        "(epidemiology) A group of nine principles, widely used in public health research, that can be useful in establishing epidemiologic evidence of a causal relationship between a presumed cause and an observed effect."
      ],
      "synonyms": [
        {
          "word": "Hill criteria"
        }
      ],
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      "wikipedia": [
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  "word": "Bradford Hill criteria"
}

{
  "etymology_text": "Established by Austin Bradford Hill (1897–1991), English epidemiologist and statistician, in 1965.",
  "forms": [
    {
      "form": "Bradford Hill criterion",
      "tags": [
        "singular"
      ]
    }
  ],
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  "lang_code": "en",
  "pos": "noun",
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      ],
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        "(epidemiology) A group of nine principles, widely used in public health research, that can be useful in establishing epidemiologic evidence of a causal relationship between a presumed cause and an observed effect."
      ],
      "synonyms": [
        {
          "word": "Hill criteria"
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  "word": "Bradford Hill criteria"
}