Appendix three: field codes
2004 version 2
24 May 2004
Ovid two-character codes for fields (dot codes) with examples
Field description - code - examples
Abstract * - .ab. - postneonatal.ab., drug abuse.ab.
All searchable fields - .af. - postneonatal.af.
Author - .au. - ponsonby a$.au., fenech m.au., cable $.au.
CAS Registry Number - .rn. - ec 1-1-1-1-1.rn.
Country of Publication - .cp. - italy.cp.
Entry Date - .ed. - 20030204.ed.
Exploded Sub-Heading - .xs. - th.xs. (therapy)
Floating Sub-Heading - .fs. - di.fs. (see Appendix 5)
Gene Symbol - .gs. - agr.gs.
Gene Symbol Word * - .gw. - mada.gw.
Grant Number - .no. - zr25ca571206.no.
ISSN - .is. - 0146 0005.is.
Institution * - .in. - guys.in.
Investigator - .ir. - young lr.ir.
Issue/Part * - .ip. - "6".ip.
Journal Code - .jc. - 7801132.jc.
Journal Name - .jn. - seminars in perinatology.jn.
Journal Subset - .sb. - aim.sb.
Journal Word * - .jw. - perinatology.jw.
Keyword heading - .kw. - legal approach.kw.
Keyword heading word * - .kf. - internet.kf.
Language - .lg. - fre.lg.
Map to text (abstract, title, MeSH) - .mp. - ulcerative colitis.mp., asthma.mp.
Mesh Subject Heading - .sh. - coronary disease.sh.
Molecular Sequence - .ms. - swissprot-s33667.ms.
Other abstract (for bioethics) * - .oa. - crime.oa.
Original title * - .ot. - coeur.ot.
Page - .pg. - 296.pg.
Personal Name as Subject - .pn. - watson jd.pn.
Publication Type - .pt. - review.pt.
Record owner - .ro. - nlm.ro.
Registry Number Word * - .rw. - enzyme$.rw.
Source - .so. - (journal, page, year, volume, issue) - (26 and 296 and 2002).so
Space flight mission - .sm. - flight experiment.sm.
Subject Heading Word * - .hw. - coronary.hw.
Text word * (title, abstract) - .tw. - (vitamin c and common cold).tw., (cot death$ or sids).tw.
Title * - .ti. - mild asthma$.ti.
Unique Identifier - .ui. - 12211620.ui.
Update date - .up. - 20030205.up.
Volume - .vo. - "26".vo.
Year of Publication - .yr. - 2002.yr.
*Go to our short cuts section for an explanation of Word indexed
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