{
  "id": "us_adult_diabetes_nhanes",
  "title": "Age-adjusted prevalence of total, diagnosed, and undiagnosed diabetes among U.S. adults age 20 and older",
  "geography": "United States",
  "unit": "Percent of adults age 20+ (age-adjusted to 2000 U.S. standard population)",
  "definitions": {
    "diagnosed": "Told by a doctor/health professional they have diabetes (other than during pregnancy)",
    "undiagnosed": "No reported diagnosis AND fasting plasma glucose \u2265126 mg/dL OR HbA1c \u22656.5%",
    "total": "Diagnosed + undiagnosed (gestational diabetes excluded)"
  },
  "survey": "NHANES; fasting sample weights; pregnant women excluded",
  "retrieved_utc": "2026-11-05T21:07:44Z",
  "sources": [
    {
      "id": "nchs_db516",
      "name": "NCHS Data Brief No. 516, Prevalence of Total, Diagnosed, and Undiagnosed Diabetes in Adults: United States, August 2021\u2013August 2023",
      "url": "https://www.cdc.gov/nchs/data/databriefs/db516.pdf",
      "table": "Data table for Figure 5"
    }
  ],
  "series": [
    {
      "period": "1999-2000",
      "n": 1739,
      "total": 9.7,
      "total_se": 1.0,
      "diagnosed": 5.9,
      "diagnosed_se": 0.9,
      "undiagnosed": 3.8,
      "undiagnosed_se": 0.5
    },
    {
      "period": "2001-2002",
      "n": 2078,
      "total": 11.5,
      "total_se": 1.0,
      "diagnosed": 6.8,
      "diagnosed_se": 0.7,
      "undiagnosed": 4.7,
      "undiagnosed_se": 0.4
    },
    {
      "period": "2003-2004",
      "n": 1874,
      "total": 11.2,
      "total_se": 0.9,
      "diagnosed": 7.2,
      "diagnosed_se": 0.7,
      "undiagnosed": 4.0,
      "undiagnosed_se": 0.7
    },
    {
      "period": "2005-2006",
      "n": 1824,
      "total": 11.6,
      "total_se": 0.9,
      "diagnosed": 7.7,
      "diagnosed_se": 0.7,
      "undiagnosed": 3.9,
      "undiagnosed_se": 0.6
    },
    {
      "period": "2007-2008",
      "n": 2329,
      "total": 12.7,
      "total_se": 0.9,
      "diagnosed": 8.3,
      "diagnosed_se": 0.7,
      "undiagnosed": 4.4,
      "undiagnosed_se": 0.4
    },
    {
      "period": "2009-2010",
      "n": 2585,
      "total": 12.6,
      "total_se": 0.9,
      "diagnosed": 8.1,
      "diagnosed_se": 0.7,
      "undiagnosed": 4.5,
      "undiagnosed_se": 0.4
    },
    {
      "period": "2011-2012",
      "n": 2287,
      "total": 12.5,
      "total_se": 1.2,
      "diagnosed": 8.5,
      "diagnosed_se": 1.0,
      "undiagnosed": 4.0,
      "undiagnosed_se": 0.6
    },
    {
      "period": "2013-2014",
      "n": 2368,
      "total": 13.0,
      "total_se": 0.8,
      "diagnosed": 9.3,
      "diagnosed_se": 0.7,
      "undiagnosed": 3.7,
      "undiagnosed_se": 0.4
    },
    {
      "period": "2015-2016",
      "n": 2244,
      "total": 14.9,
      "total_se": 1.0,
      "diagnosed": 10.0,
      "diagnosed_se": 0.8,
      "undiagnosed": 4.8,
      "undiagnosed_se": 0.7
    },
    {
      "period": "2017-2020",
      "n": 3757,
      "total": 14.8,
      "total_se": 0.8,
      "diagnosed": 10.6,
      "diagnosed_se": 0.7,
      "undiagnosed": 4.2,
      "undiagnosed_se": 0.3,
      "period_label": "2017\u2013March 2020"
    },
    {
      "period": "2021-2023",
      "n": 2938,
      "total": 14.3,
      "total_se": 1.0,
      "diagnosed": 10.1,
      "diagnosed_se": 0.8,
      "undiagnosed": 4.2,
      "undiagnosed_se": 0.6,
      "period_label": "August 2021\u2013August 2023"
    }
  ],
  "latest_in_series_note": "Figures show the latest observation period included in this curated series from the cited release\u2014not a claim that no newer unrelated series exists elsewhere."
}