Usage Statistics and Analysis in Electronic Archival Description

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Explore detailed statistics and analysis from the EAD roundtable and forum conducted by the Society of American Archivists. Discover insights on the distribution of elements within EAD documents, size distribution of finding aids, and more.

  • Archival Description
  • Statistics
  • Analysis
  • EAD Forum
  • Society of American Archivists
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  1. EAD Tag Usage KATHERINE M. WISSER & JACKIE DEAN AUGUST 2011 EAD ROUNDTABLE AND EAD FORUM SOCIETY OF AMERICAN ARCHIVISTS

  2. Some initial numbers 1,136 finding aids 108 repositories File Sizes 30KB 5,292 KB 12,0333KB Mean: 273.22 KB, Median: 50 KB, Mode: 11 KB

  3. <eadheader> Element Number in Sample Number in unique finding aid % in Sample eadid filedesc profiledesc revisiondesc 1,136 1,136 1,114 372 1,136 1,136 1,114 372 100.0% 100.0% 98.1% 32.7%

  4. <filedesc> Element Number in Sample Number in unique finding aid % in Sample editionstmt notestmt publicationstmt seriesstmt Titlestmt 45 103 1,081 45 103 1,081 4.0% 9.1% 95.2% 0.1% 100.0% 1 1 1,136 1,136

  5. <profiledesc> Element Number in Sample Number in unique finding aid % in Sample Creation Descrules Langusage 1,076 486 1,047 1,076 486 1,047 94.7% 42.8% 92.2% <revisiondesc> Element Number in Sample Number in unique finding aid % in Sample Change List 552 7,575 345 27 30.4% 2.4%

  6. <frontmatter> (n=279) Element Number in Sample % in Sample titlepage div empty 259 92.8% 2.2% 5.0% 6 14

  7. Values for @level within <archdesc> @level value Number in Sample % in Sample collection 1,033 90.9% fonds 55 4.8% class 3 0.3% recordgrp 16 1.4% series 7 0.6% subfonds 3 0.3% subgrp 11 1.0% subseries 0 0.0% File 4 0.4% item 1 0.1% otherlevel 1 0.1% Total 1,136

  8. Elements within the <archdesc>/<did> Element Number in Sample Unique finding aids % in Sample abstract 1,085 984 86.6% container 10 4 0.4% langmaterial 1,042 1,021 89.9% materialspec 18 18 1.6% origination 1,216 1,011 89.0% physdesc 1,176 1,104 97.2% physloc 557 316 27.8% repository 1,141 1,132 99.6% unitdate 1,651 1,102 97.0% unitid 1,151 1,024 90.1% unittitle 1,582 1,136 100.0%

  9. Other elements within the <archdesc> Element Number in Sample Unique finding aids % in Sample accessrestrict 991 979 86.2% accruals 81 81 7.1% acqinfo 796 772 68.0% altformavail 152 144 12.7% appraisal 57 54 4.8% custodhist 163 160 14.1% originalsloc 39 39 3.4% otherfindaid 146 135 11.9% phystech 48 48 4.2% prefercite 970 970 85.4% processinfo 676 645 56.8% userestrict 808 776 68.3%

  10. Other elements within the <archdesc> Element Number in Sample Unique finding aids % in Sample arrangement 761 744 65.5% bibliography 134 115 10.1% bioghist 1,118 992 87.3% controlaccess 3,543 966 85.0% fileplan 7 7 0.6% index 48 14 1.2% odd 214 110 9.7% relatedmaterial 494 458 40.3% scopecontent 1,111 1,061 93.4% separatedmaterial 178 168 14.8%

  11. <dsc> (n=1,136) Element Number in Sample % in Sample One <dsc> Multiple <dsc>s No <dsc>s 1,026 90.3% 2.4% 7.3% 27 83

  12. @type for <dsc> @type values Number in Sample % in Sample Total <dsc>s 1,105 97.2% (n=1,136) no type attribute 90 8.1% (n=1,105) analyticover 56 5.1% (n=1,105) 66.5% (n=1,105) 16.7% (n=1,105) 3.5% (n=1,105) combined 735 in-depth 185 othertype 39

  13. <c>-<c12> (n=1,053) Element Number in Sample Unique finding aids % in Sample c 113,133 117 11.1% c01 31,792 927 88.0% c02 189,148 763 72.5% c03 239,029 440 41.8% c04 104,161 217 20.6% c05 31,306 113 10.7% c06 10,820 48 4.6% c07 3,127 21 2.0% c08 1,546 7 0.7% c09 485 3 0.3% c10 10 1 0.1% c011 = 0 c012 = 0

  14. 300,000 250,000 200,000 150,000 100,000 50,000 0 <c01> <c02> <c03> <c04> <c05> <c06> <c07> <c08> <c09> <c10> <c11> <c12>

  15. Values for @level within <dsc> (n=1,053) @level value Number in Sample Unique finding aids % in Sample collection 509 22 2.1% fonds 12 7 0.7% class 1,535 13 1.2% recordgrp 31 7 0.7% series 8,390 818 77.7% subfonds 119 18 1.7% subgrp 339 33 3.1% subseries 14,962 372 35.3% file 357,262 599 56.9% item 130,178 255 24.2% otherlevel 25,877 96 9.1%

  16. Elements within the <c>-<c12>/<did> (n=1,053) Element Number in Sample Unique finding aids % in Sample abstract 7,128 26 2.5% container 704,884 869 82.5% langmaterial 10,078 64 6.1% materialspec 8,395 14 1.3% origination 20,549 85 8.1% physdesc 124,763 573 54.4% physloc 11,354 61 5.8% repository 2,651 3 0.3% unitdate 470,673 954 90.6% unitid 233,952 486 46.2% unittitle 697,246 1,041 98.9%

  17. Other elements within the <c>-<c12> (n=1,053) *Note: in the presentation at SAA the number for prefercite was erroneously reported as the archdesc-level value. Element Number in Sample Unique finding aids % in Sample accessrestrict 6,727 113 10.7% accruals 0 0 0.0% acqinfo 3,613 47 4.5% altformavail 5,518 28 2.7% appraisal 43 7 0.7% custodhist 5,504 23 2.2% originalsloc 150 11 1.0% otherfindaid 463 24 2.3% phystech 570 16 1.5% prefercite * 2 1 0.1% processinfo 740 40 3.8% userestrict 848 34 3.2%

  18. Other elements within the <c>-<c12> (n=1,053) Element Number in Sample Unique finding aids % in Sample arrangement 2,128 200 19.0% bibliography 1,435 16 1.5% bioghist 1,099 48 4.6% controlaccess 58,366 54 5.1% fileplan 0 0 0.6% index 2,943 7 0.7% odd 16,525 76 7.2% relatedmaterial 1,701 46 4.4% scopecontent 110,648 645 61.3% separatedmaterial 0 0 0.0%

  19. Content tags in <dsc> (n=1,053) Element Number in Sample Number in unique finding aid % in Sample corpname famname function genreform name occupation persname subject 11,384 251 88 18 0 66 15 8.4% 1.7% 0.0% 6.3% 1.4% 0.4% 12.9% 4.7% 0 28,082 23,555 204 66,197 28,767 4 136 49

  20. Digital Archival Objects Element Number in Sample Number in unique finding aid % in Sample dao daodesc daogrp daoloc 24,997 2,217 5,503 12,193 87 136 106 123 7.7% 12.0% 9.3% 10.8%

  21. Date attributes Attributes Number in Sample calendar certainty datechar era type 193,658 5,101 4,229 193,669 111,125 110,744 type= inclusive type= bulk 381

  22. @relatedencoding @relatedencoding value relatedencoding Standard Number in sample % of all @relatedencoding 1,662 1,079 521 MARC 66.5% 32.1% 1.2% 0.2% Dublin Core ISAD(G)v2 MidosaXML Number in Sample 19 3 Number of @relatedencoding % with @ in sample (n=1,136) relatedencoding (n=885) one two three 222 569 94 25.1% 64.3% 10.6% 19.5% 50.1% 8.3%

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