{
 "v": 1,
 "source": "US CDC, National Health and Nutrition Examination Survey (NHANES), urinary environmental phenols and parabens",
 "sourceUrl": "https://wwwn.cdc.gov/nchs/nhanes/",
 "method": "Point estimates weighted by the NHANES subsample weight of each cycle; no confidence intervals. Detected = at or above the laboratory detection limit. Median and 95th percentile in ng/mL of urine, not adjusted for creatinine. Ages 6 and over.",
 "generatedAt": "2026-11-06T05:14:45.289Z",
 "files": [
  {
   "cycle": "2003–2004",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2003/DataFiles/L24EPH_C.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2003/DataFiles/DEMO_C.xpt"
  },
  {
   "cycle": "2005–2006",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2005/DataFiles/EPH_D.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2005/DataFiles/DEMO_D.xpt"
  },
  {
   "cycle": "2007–2008",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2007/DataFiles/EPH_E.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2007/DataFiles/DEMO_E.xpt"
  },
  {
   "cycle": "2009–2010",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2009/DataFiles/EPH_F.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2009/DataFiles/DEMO_F.xpt"
  },
  {
   "cycle": "2011–2012",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2011/DataFiles/EPH_G.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2011/DataFiles/DEMO_G.xpt"
  },
  {
   "cycle": "2013–2014",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2013/DataFiles/EPHPP_H.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2013/DataFiles/DEMO_H.xpt"
  },
  {
   "cycle": "2015–2016",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2015/DataFiles/EPHPP_I.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2015/DataFiles/DEMO_I.xpt"
  },
  {
   "cycle": "2017–2018",
   "lab": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2017/DataFiles/EPHPP_J.xpt",
   "demo": "https://wwwn.cdc.gov/Nchs/Data/Nhanes/Public/2017/DataFiles/DEMO_J.xpt"
  }
 ],
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   "id": "bpa",
   "label": "BPA",
   "ledgerIds": [
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   ],
   "unit": "ng/mL",
   "series": [
    {
     "cycle": "2003–2004",
     "n": 2517,
     "detectedPct": 92.6,
     "median": 2.8,
     "p95": 16,
     "medianBelowLod": false
    },
    {
     "cycle": "2005–2006",
     "n": 2548,
     "detectedPct": 90.2,
     "median": 2,
     "p95": 11.5,
     "medianBelowLod": false
    },
    {
     "cycle": "2007–2008",
     "n": 2604,
     "detectedPct": 92.9,
     "median": 2.1,
     "p95": 13,
     "medianBelowLod": false
    },
    {
     "cycle": "2009–2010",
     "n": 2749,
     "detectedPct": 90.4,
     "median": 1.9,
     "p95": 9.6,
     "medianBelowLod": false
    },
    {
     "cycle": "2011–2012",
     "n": 2489,
     "detectedPct": 88.9,
     "median": 1.4,
     "p95": 9.4,
     "medianBelowLod": false
    },
    {
     "cycle": "2013–2014",
     "n": 2686,
     "detectedPct": 95.7,
     "median": 1.3,
     "p95": 7.7,
     "medianBelowLod": false
    },
    {
     "cycle": "2015–2016",
     "n": 2651,
     "detectedPct": 94.8,
     "median": 1.1,
     "p95": 6.8,
     "medianBelowLod": false
    },
    {
     "cycle": "2017–2018",
     "n": 2758,
     "detectedPct": 84.5,
     "median": 0.7,
     "p95": 4.1,
     "medianBelowLod": false
    }
   ],
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    "groups": [
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      "id": "child",
      "label": "Children 6–11",
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      "detectedPct": 93,
      "median": 1,
      "p95": 3.3,
      "medianBelowLod": false
     },
     {
      "id": "teen",
      "label": "Teens 12–19",
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      "median": 0.8,
      "p95": 4.6,
      "medianBelowLod": false
     },
     {
      "id": "adult",
      "label": "Adults 20+",
      "n": 1697,
      "detectedPct": 83.5,
      "median": 0.6,
      "p95": 4.2,
      "medianBelowLod": false
     }
    ]
   }
  },
  {
   "id": "bps",
   "label": "BPS",
   "ledgerIds": [
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   ],
   "unit": "ng/mL",
   "series": [
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     "cycle": "2013–2014",
     "n": 2682,
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     "median": 0.4,
     "p95": 3.6,
     "medianBelowLod": false
    },
    {
     "cycle": "2015–2016",
     "n": 2651,
     "detectedPct": 88.2,
     "median": 0.4,
     "p95": 4.1,
     "medianBelowLod": false
    },
    {
     "cycle": "2017–2018",
     "n": 2756,
     "detectedPct": 87,
     "median": 0.5,
     "p95": 4.1,
     "medianBelowLod": false
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   ],
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    "groups": [
     {
      "id": "child",
      "label": "Children 6–11",
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      "median": 0.5,
      "p95": 3.1,
      "medianBelowLod": false
     },
     {
      "id": "teen",
      "label": "Teens 12–19",
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      "median": 0.4,
      "p95": 4.1,
      "medianBelowLod": false
     },
     {
      "id": "adult",
      "label": "Adults 20+",
      "n": 1694,
      "detectedPct": 87.1,
      "median": 0.5,
      "p95": 4.4,
      "medianBelowLod": false
     }
    ]
   }
  },
  {
   "id": "bpf",
   "label": "BPF",
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    "bpa"
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   "unit": "ng/mL",
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     "cycle": "2013–2014",
     "n": 2682,
     "detectedPct": 66.3,
     "median": 0.4,
     "p95": 9.8,
     "medianBelowLod": false
    },
    {
     "cycle": "2015–2016",
     "n": 2651,
     "detectedPct": 46.2,
     "median": 0.14,
     "p95": 8.2,
     "medianBelowLod": true
    },
    {
     "cycle": "2017–2018",
     "n": 2757,
     "detectedPct": 54.5,
     "median": 0.2,
     "p95": 6.8,
     "medianBelowLod": false
    }
   ],
   "byAge": {
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    "groups": [
     {
      "id": "child",
      "label": "Children 6–11",
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      "detectedPct": 48.6,
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      "p95": 11.2,
      "medianBelowLod": true
     },
     {
      "id": "teen",
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      "p95": 7.6,
      "medianBelowLod": false
     },
     {
      "id": "adult",
      "label": "Adults 20+",
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      "p95": 6.7,
      "medianBelowLod": false
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    ]
   }
  },
  {
   "id": "triclosan",
   "label": "Triclosan",
   "ledgerIds": [
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   ],
   "unit": "ng/mL",
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     "cycle": "2003–2004",
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     "median": 9.2,
     "p95": 461,
     "medianBelowLod": false
    },
    {
     "cycle": "2005–2006",
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     "detectedPct": 80.8,
     "median": 15.1,
     "p95": 655,
     "medianBelowLod": false
    },
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     "median": 12.1,
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    {
     "cycle": "2009–2010",
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     "median": 10.7,
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     "medianBelowLod": false
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     "cycle": "2011–2012",
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     "p95": 553,
     "medianBelowLod": false
    },
    {
     "cycle": "2013–2014",
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     "median": 6.3,
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     "medianBelowLod": false
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    {
     "cycle": "2015–2016",
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     "median": 3,
     "p95": 347.8,
     "medianBelowLod": false
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     "cycle": "2017–2018",
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     "median": 1.2,
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     "medianBelowLod": true
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   ],
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    "groups": [
     {
      "id": "child",
      "label": "Children 6–11",
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      "medianBelowLod": true
     },
     {
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      "median": 1.2,
      "p95": 386,
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     },
     {
      "id": "adult",
      "label": "Adults 20+",
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      "median": 1.2,
      "p95": 393,
      "medianBelowLod": true
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    ]
   }
  },
  {
   "id": "oxybenzone",
   "label": "Oxybenzone (benzophenone-3)",
   "ledgerIds": [
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   ],
   "unit": "ng/mL",
   "series": [
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     "cycle": "2003–2004",
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     "p95": 1040,
     "medianBelowLod": false
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    {
     "cycle": "2005–2006",
     "n": 2548,
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     "p95": 1150,
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    },
    {
     "cycle": "2007–2008",
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     "median": 14.3,
     "p95": 801,
     "medianBelowLod": false
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    {
     "cycle": "2009–2010",
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     "median": 16.4,
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     "medianBelowLod": false
    },
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     "cycle": "2011–2012",
     "n": 2489,
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     "median": 18.7,
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     "medianBelowLod": false
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     "median": 21,
     "p95": 1210,
     "medianBelowLod": false
    },
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     "cycle": "2015–2016",
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     "medianBelowLod": false
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     "cycle": "2017–2018",
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     "p95": 616,
     "medianBelowLod": false
    }
   ],
   "byAge": {
    "cycle": "2017–2018",
    "groups": [
     {
      "id": "child",
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     },
     {
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     },
     {
      "id": "adult",
      "label": "Adults 20+",
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      "p95": 689,
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    ]
   }
  },
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   "id": "propylparaben",
   "label": "Propylparaben",
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   "unit": "ng/mL",
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     "cycle": "2005–2006",
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     "p95": 299,
     "medianBelowLod": false
    },
    {
     "cycle": "2007–2008",
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     "median": 7.6,
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     "medianBelowLod": false
    },
    {
     "cycle": "2009–2010",
     "n": 2749,
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     "median": 6.4,
     "p95": 297,
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    },
    {
     "cycle": "2011–2012",
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     "median": 4.7,
     "p95": 200,
     "medianBelowLod": false
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    {
     "cycle": "2013–2014",
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     "median": 4.8,
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    },
    {
     "cycle": "2015–2016",
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     "median": 3.2,
     "p95": 175.9,
     "medianBelowLod": false
    },
    {
     "cycle": "2017–2018",
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     "median": 2.3,
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     "medianBelowLod": false
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   ],
   "byAge": {
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     },
     {
      "id": "teen",
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      "p95": 141,
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     },
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      "id": "adult",
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      "medianBelowLod": false
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    ]
   }
  }
 ]
}