{
 "metadata": {
  "title": "Journal acceptance times, 2014-2015 vs 2024-2025",
  "edition": "2026",
  "method_version": "v2",
  "label": "Change in median days from submission to acceptance for research articles, same journals and same method in both windows. Includes author revision time; not time to first decision.",
  "baseline_window": {
   "start": "2014-01-01",
   "end": "2015-12-31"
  },
  "edition_window": {
   "start": "2024-01-01",
   "end": "2025-12-31"
  },
  "generated_at": "2026-09-26T04:04:26Z",
  "license": "CC BY 4.0 (compilation)",
  "source": "NCBI PubMed E-utilities; Crossref REST API",
  "baseline_comparator": "Himmelstein D. The history of publishing delays. Satoshi Village, 2016. Data: github.com/dhimmel/delays (CC BY 4.0), commit 2d05dba.",
  "rules": {
   "pairing": "NLM unique ID; both rows must be published under the method v2 gates in their own window.",
   "extreme_change_ratio": 2.5,
   "extreme_change_rule": "A pair whose median moved by more than this factor either way is held until a hand check rules out a change in which received date the publisher deposits.",
   "change_band_pct": 10,
   "bootstrap": {
    "resamples": 10000,
    "seed": 20260926,
    "unit": "journal"
   },
   "families": {
    "Nature-branded": "journal is 'Nature' or its title starts with 'Nature '",
    "Cell Press": "journal title is in CELL_PRESS_TITLES",
    "MDPI": "publisher is MDPI"
   },
   "level_shift": {
    "rule": "Yearly medians from a seeded sample of up to 80 research articles per publication year, 2012-2025 (years with fewer than 20 intervals left out). A boundary year k is a level shift when the median moves by at least 1.6x from year k-1 to k and the two years from k differ from the two years before k by at least 1.5x in the same direction. Only boundaries between the two windows count. A shifted pair is held: a one-year cliff is what a change in the deposited received date looks like, and PubMed dates cannot tell it from a real change.",
    "one_year_ratio": 1.6,
    "persistence_ratio": 1.5,
    "boundaries": [
     2016,
     2024
    ]
   }
  },
  "counts": {
   "edition_rows": 108,
   "baseline_rows": 65,
   "pairs": 65,
   "compared": 60,
   "held_extreme_change": 2,
   "held_level_shift": 3
  },
  "summary": {
   "journals": 60,
   "median_of_medians_baseline": 115,
   "median_of_medians_edition": 121.8,
   "median_change_pct": 16.8,
   "median_change_pct_ci95": [
    0,
    34.4
   ],
   "slower_more_than_band": 32,
   "faster_more_than_band": 13,
   "within_band": 15,
   "at_least_doubled": 4,
   "sign_test": {
    "slower": 37,
    "faster": 20,
    "unchanged": 3,
    "p_two_sided": 0.033143967787505446
   }
  },
  "summary_including_held": {
   "journals": 65,
   "median_of_medians_baseline": 112,
   "median_of_medians_edition": 122,
   "median_change_pct": 24.1,
   "median_change_pct_ci95": [
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    40.4
   ],
   "slower_more_than_band": 37,
   "faster_more_than_band": 13,
   "within_band": 15,
   "at_least_doubled": 7,
   "sign_test": {
    "slower": 42,
    "faster": 20,
    "unchanged": 3,
    "p_two_sided": 0.007148733833163067
   }
  },
  "families": {
   "Nature-branded": {
    "journals": 3,
    "median_of_medians_baseline": 170.5,
    "median_of_medians_edition": 263,
    "median_change_pct": 77.7,
    "median_change_pct_ci95": [
     52.9,
     96.8
    ],
    "slower_more_than_band": 3,
    "faster_more_than_band": 0,
    "within_band": 0,
    "at_least_doubled": 0,
    "sign_test": {
     "slower": 3,
     "faster": 0,
     "unchanged": 0,
     "p_two_sided": 0.25
    }
   },
   "Cell Press": {
    "journals": 10,
    "median_of_medians_baseline": 164,
    "median_of_medians_edition": 245,
    "median_change_pct": 47.9,
    "median_change_pct_ci95": [
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     71.7
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    "slower_more_than_band": 9,
    "faster_more_than_band": 0,
    "within_band": 1,
    "at_least_doubled": 0,
    "sign_test": {
     "slower": 10,
     "faster": 0,
     "unchanged": 0,
     "p_two_sided": 0.001953125
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   },
   "MDPI": {
    "journals": 5,
    "median_of_medians_baseline": 55.5,
    "median_of_medians_edition": 34,
    "median_change_pct": -37.3,
    "median_change_pct_ci95": [
     -54,
     -25
    ],
    "slower_more_than_band": 0,
    "faster_more_than_band": 5,
    "within_band": 0,
    "at_least_doubled": 0,
    "sign_test": {
     "slower": 0,
     "faster": 5,
     "unchanged": 0,
     "p_two_sided": 0.0625
    }
   },
   "Other": {
    "journals": 42,
    "median_of_medians_baseline": 111.8,
    "median_of_medians_edition": 117.5,
    "median_change_pct": 8.4,
    "median_change_pct_ci95": [
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     26.5
    ],
    "slower_more_than_band": 20,
    "faster_more_than_band": 8,
    "within_band": 14,
    "at_least_doubled": 4,
    "sign_test": {
     "slower": 24,
     "faster": 15,
     "unchanged": 3,
     "p_two_sided": 0.19959086691960692
    }
   }
  },
  "code": "apps/web/scripts/harvest-pubmed-turnaround.py --compare-baseline"
 },
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  {
   "slug": "acta-biomaterialia",
   "journal": "Acta Biomaterialia",
   "publisher": "Elsevier",
   "family": "Other",
   "nlm_id": "101233144",
   "baseline": {
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   },
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    "2025": 121
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   "level_shifts": []
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  {
   "slug": "biomaterials",
   "journal": "Biomaterials",
   "publisher": "Elsevier",
   "family": "Other",
   "nlm_id": "8100316",
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    "p25": 26,
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    "n": 300
   },
   "edition": {
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    "2025": 110.5
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   "level_shifts": []
  },
  {
   "slug": "biomedicine-and-pharmacotherapy",
   "journal": "Biomedicine & Pharmacotherapy",
   "publisher": "Elsevier",
   "family": "Other",
   "nlm_id": "8213295",
   "baseline": {
    "median": 31,
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   },
   "edition": {
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   "change_days": 48,
   "change_pct": 154.8,
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   "research_records_edition": 1827,
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   "status": "held_extreme_change",
   "note": null,
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     "from_days": 25.5,
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   ]
  },
  {
   "slug": "bioresource-technology",
   "journal": "Bioresource Technology",
   "publisher": "Elsevier",
   "family": "Other",
   "nlm_id": "9889523",
   "baseline": {
    "median": 54,
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    "2014": 59,
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  {
   "slug": "bmc-medicine",
   "journal": "BMC Medicine",
   "publisher": "Springer (Biomed Central Ltd.)",
   "family": "Other",
   "nlm_id": "101190723",
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    "2025": 176.5
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  {
   "slug": "cancer-cell",
   "journal": "Cancer Cell",
   "publisher": "Elsevier",
   "family": "Cell Press",
   "nlm_id": "101130617",
   "baseline": {
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   "edition": {
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   "change_days": 9,
   "change_pct": 4.1,
   "research_records_baseline": 237,
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    "2014": 196,
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   "level_shifts": []
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  {
   "slug": "cancer-letters",
   "journal": "Cancer Letters",
   "publisher": "Elsevier",
   "family": "Other",
   "nlm_id": "7600053",
   "baseline": {
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   "edition": {
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    "2014": 73.5,
    "2015": 73,
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  {
   "slug": "carbohydrate-polymers",
   "journal": "Carbohydrate Polymers",
   "publisher": "Elsevier",
   "family": "Other",
   "nlm_id": "8307156",
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   "change_days": -2,
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   "research_records_baseline": 2640,
   "research_records_edition": 2478,
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   "note": null,
   "year_series": {
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    "2014": 84.5,
    "2015": 78,
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  {
   "slug": "cell",
   "journal": "Cell",
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   "family": "Cell Press",
   "nlm_id": "0413066",
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   "note": null,
   "year_series": {
    "2012": 190,
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    "2015": 131,
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  {
   "slug": "cell-death-and-differentiation",
   "journal": "Cell Death and Differentiation",
   "publisher": "Springer Science and Business Media LLC",
   "family": "Other",
   "nlm_id": "9437445",
   "baseline": {
    "median": 164.5,
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   "edition": {
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   "change_days": 47.5,
   "change_pct": 28.9,
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  {
   "slug": "cell-death-and-disease",
   "journal": "Cell Death and Disease",
   "publisher": "Springer Science and Business Media LLC",
   "family": "Other",
   "nlm_id": "101524092",
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  {
   "slug": "cell-metabolism",
   "journal": "Cell Metabolism",
   "publisher": "Elsevier",
   "family": "Cell Press",
   "nlm_id": "101233170",
   "baseline": {
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   "year_series": {
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   "level_shifts": []
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  {
   "slug": "cell-reports",
   "journal": "Cell Reports",
   "publisher": "Elsevier",
   "family": "Cell Press",
   "nlm_id": "101573691",
   "baseline": {
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  {
   "slug": "cell-stem-cell",
   "journal": "Cell Stem Cell",
   "publisher": "Elsevier",
   "family": "Cell Press",
   "nlm_id": "101311472",
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  {
   "slug": "cellular-and-molecular-life-sciences",
   "journal": "Cellular and Molecular Life Sciences",
   "publisher": "Springer-Verlag",
   "family": "Other",
   "nlm_id": "9705402",
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