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Electronic Resources Subcommittee
Ovid - ProQuest Comparison
Criteria for comparing Ovid and ProQuest
Criteria Ovid ProQuest
1. Software Design:
1.1 Ease of Access N/A N/A
1.2 Response Time

Note:

Both get sluggish when displaying full-text +graphics but that is probably more a result of network speeds than a database flaw.

Good.
4 seconds for all formats

25 seconds to retrieve full-text+ graphics BUT the gain in speed is lost because the images are thumbnails. User must tell system to re-display with full size figures and tables.
3 seconds for all other formats including full-text +graphics

35 seconds to retrieve full image first time 10 seconds lost to Netscape opening Adobe.

25 seconds second time (Acrobat was already up.)
1.3 System Design Nice layout. Logical progression through screens. Good novice end-user layout. Really nice search assistant.
1.4 Compatible with multiple Web browsers Yes. Yes.
1.5 Extra software needed on client machine for view/download/print No for Web-based.

Yes for Java-based.

This is a case where a remote user using Netscape on a Macintosh would be unable to access Java version until they installed Microsoft Explorer.

No.
1.6 Searching protocols applicable to multiple databases Yes. Yes.
1.7 Ability to customize interface No. Just Basic vs. Advanced search screens. Not really. Options for Basic (default),
Advanced, and Search Assistant
1.8 Structure of database files defined Yes. No.
1.9 Statistical reporting capabilities Don't know Don't know
2. Searching Capabilities:
2.1 Search fields
Abstract (ab)
Outline Headings (oh)
Accession Number (an)
Pagination (pg)
Authors (au)
Publication Date (pd)
Caption Text (ct)
Publication Type (pt)
Document Type (dt)
Publication Year (yr)
Full Text (tx)
References (rf)
ISSN (is)
Text Word (tw)
Institution (in)
Title (ti)
Issue/Part (ip)
Update Code (up)
Journal Name (jn)
Volume (vo)
NLM Journal Code (jc)
Abstract
All Indexing
Article Column Head
Article Title
Article Type
Author
Author Affiliation
Caption
Classification Code
Classification Name
Company Name
Date (Alpha)
Date (Numeric)
Degree
Dissertation Advisor
DUNS®
Footnote
Geographical Name
Headnote
ISBN
ISSN
Product Name
School Code
SIC Codes
Source
Source Database ID
Source Type
Subject Terms or Code
Ticker Symbol
2.2 Search modes Basic Screen:
  • Keyword/Author search
  • "Limit to" choices -
    • Latest Update
    • Original Articles
    • Reviews
    • Abstracts

might not be the best for novice end-users to have to decide between. I have been unable to find OVID's definition of "original article"

Advanced is the default right now.

Basic Screen:

"Search by word" searches the following indexes:

  • Abstract, Article Title, Author, Company, Geographical Name, Personal Name, Product, Publication Name (Source), and Subject.
  • Users have the option to "Search the full text of articles" if checked off ProQuest searches title, abstract, and complete text of each article.
  • Basic is the default with the "search full text option" turned off.
  • Advanced has four search fields with drop menus with the boolean connectors. Article title, author, company, geographical personal name, Pub title, subject or text are the searchable field options in advanced mode.
  • Although all the fields in item 2.1 are searchable, the user must know the code and apply it on the search line.
2.3 Truncators $ (unlimited)

: (unlimited)

$1 (limited truncator)

# (one character at end)

? (one embedded chrct.)

? (unlimited)

* (one character, either embedded or at end.)

2.4 Search screen layout Uncluttered. Clean. Simple icons. Good background color. Uncluttered. Clean. Simple icons. Good use of color. Buttons are in the same place on every screen. That's an plus.
2.5 Search save/rerun capability Yes. Yes. With an option of deleting it from the search history list.
2.6 Limiting before initial search Available on screen as checkboxes. No.
2.7 Limiting after initial search Either by display arrangements, (i.e. sort) or by "combine" This feature that allows you to take search #1 and #5 and pick your boolean.

Additional after searching the user can select Limit and select an earlier search to apply a limit to, not just the last search executed.

The user can limit by name of journal, publication type, date, Latest Update Abstracts

Original Articles, & Review Articles.
User can click on "Show only articles available online in full text." to narrow after searching. I like this because users can see how many articles they lose by limiting in the fashion.

2.8 Ability to undo limit. The browser back key is probably the way that the users will choose to undo their prior action. The browser back key is probably the way that the users will choose to undo their prior action.
2.9 Lateral/Sideways searching No. No subject headings displayed to have hypertexted! The complete list of subject headings is available through the Help. They are not hot-linked, so users can either cut and paste them to the command line or they can remember them and type them in back at the search screen. There are subject headings displayed but they are not hot-linked.

The help mentions subject headings and states that it is a controlled vocabulary list but there is no access to the list online.

2.10 Easy reversal of actions The back button on the browser. And the Combine feature would allow you to go back and combine older searches. The back button on the browser. There is no way to combine older searches. Users can rerun them but not combine them.
2.11 Browsable Indexes Yes. All search fields have browsable indexes. No.
3. Help/Guidance:
3.1 All messages are clear and concise Yes. Some jargon like "Original Articles." Yes. No jargon. Typical ProQuest user-friendly screen.
3.2 Context sensitive help Yes. But not database specific! Ex: When searching in Biomedical Collection IV, I asked for help with limiting. The limit screen displayed in the help was not the limit screen I was working with, so I could find no explanation of what "Original Articles" means to OVID. Yes. Very nice.
3.3 Error messages

"The query that Ovid received, ?"> , did not produce the desired results."
Is a very nice error message as error messages go. At least it doesn't assign blame and the syntax error screen has a "Return to search" button.

"Internal Server Error" was more daunting and did not have instructions on how to return.

Good explanatory error message:
  • "Your search failed because it is incomplete or incorrect.
  • The problem is immediately before or after the ^ character as shown here:
    • (^?)AND (I*)
  • Instead of "?" you should have one of the following:
    • a number
    • a search field
    • the name of a month or season
    • a word
    • a left parenthesis
    • a quotated word or phrase"
An end-user should be able to correct their search statement using this error message.
3.4 After Error/Help Message, returned to location in system No. The button on the screen takes you back to the main search page, but it does keep the search history. No. The back button doesn't penalize the user though.
3.5 Location in system is always known Yes. Yes.
3.6 Appropriate graphics, icons, etc. Yes. Yes.
4. Display/Delivery:
4.1 Screen Design uncluttered. No. The citations returned in "Title Display" format is very jumbled. Even with color-coding to separate the fields visually, the fields flow together. Especially after using databases where each field is given its own line. Sort of.

The initial screen is busy. Especially with the chart on the right-hand side that lets the user pick the display format. After this point though it get cleaner and easier to read.

Has a link for "clean copy for printing" that removes all extraneous links from the page. Nice.
4.2 Display format options
TOC
Citation
Abstract
Complete Record
(an, au, ti, so, ab, issn)
Full-Text + graphics

The default results will return as a citation that is color-coded. This color-coding won't carry over to the printed copy so I suspect the result display layout won't be that popular but there is sufficient citation info on the initial results screen that the patron could elect to just print that screen.

 

 

 

 





 

When user gets initial list of results, and they click on the title, they will be taken to the full-text. They also can select their other display options in the columns to the right.

Those options are:

  • Citation
  • Abstract
  • Full Text
  • Text+ graphics
  • Page image

There is sufficient citation info on the initial results screen that the patron could elect to just print that screen.

No table of contents.
4.3 Display fields
Abstract (ab)

LocalMessage (lm)

Accession Number (an)

NLM Journal Code (jc)

Authors (au)

Publication Type (pt)

CODEN (cd)

Source (so)
Document Type (dt)
Title (ti)
ISSN (is)
Update Code (up)
Institution (in)
Default is full text.
4.4 Export options
  • User can specify layout format - OVID or BRS/Tagged. Neither term means anything to lay end-users.
  • The download format can be DOS/PC- Mac- or Unix- ASCII.
  • Users can mark individual records or take first 200 in set and manage and download them. Nice feature.
  • WYSIWYG.
  • The Save feature of the web browser is how exporting is done.
  • This is done record by record too, since you can't mark a set to manipulate. After the user selects email citation or email full text, the article are saved in a set in the Pending Order Screen.
  • The use of the word ORDER is misleading since this usually means money to people. Maybe Export Queue would be a better term. This is as close as ProQuest gets to marking.
4.5 Records Marking Yes, users can check off records to display and can sort (or "manage") by Author, Title Journal or Date in ascending or descending order. This is a nice feature. No! As far as I was able to tell from the help, there is no way to browse a list of citations and mark the ones you want and then manipulate that set.
4.6 Reversed chronological results No. Must "manage" citations/records in order to sort. Yes.
4.7 Quality of full-text/image output Excellent on screen. Image are "clickable"

Image Display Options are:
  • Fax Quality (provides the fastest download)
  • Print Quality
  • Print Quality with Halftones (provides the best image quality for articles with halftone graphics)
4.8 Type of printer required Any printer will work if article is full-text. Must have laser to print graphics/images. Any printer will work if article is full-text. Must have laser to print graphics/images.
4.9 Fax/email/snail-mail Yes but email will not include images or graphics. Yes but cannot use email to deliver Page Image or Text+Graphics article formats
4.10 Quality of output Excellent on screen. Printouts will be as good as the printer. Excellent on screen. Printouts will be as good as the printer.
4.11 Graphics/images Nicely done. Default is inline thumbnail, with options to remove all graphics or to show them full sized embedded in article. Additionally the article is not scanned so users will be able to copy and paste from the text and know where the graphics will fall in the text.
  • Well done. Clean images embedded in the article.
  • Right next to graphic is the option to enlarge thumbnail to 50% or %100 of actual image.
  • This is different than the select and then reload of OVID.
4.12 Smooth transitions down pages and from record to record
  • No. User must return to title list before looking at next record, regardless of display format. This is clunky.
  • Down the pages: only displays 10 citations at a time.
  • There is no fast way to move from record 1 and 47 for example. A jump to feature would be nice.
  • A small table box in the corner allows the user to go forward/back one article, tells you which article you are on and has the "clean copy for printing" link.
  • Down the pages: displays 10 citations as a default but user can set it to display 20 or 25 per page as well. After results are retrieved there is the option to "View all the results" And that will take all results in pool and put them on one web page. VERY nice feature. Even includes a warning that it will affect performance.
  • The web standard "Select a page for more results" is at the bottom so the user can quickly jump around the results.
4.13 Linked to holdings No. Not really necessary since the whole database is full-text. No.
Comparative Search:

(arterio? and (geriatr? or elder? or gerontolo?))

0 hits 30 hits
aged AND alcohol? 15 seconds to run 25 seconds to run
5. UNF Specifics
5.1 Total titles indexed in BioMedical Collection (IV is what we currently have) 87 113 approx.
5.2 Title overlap with collection 25 19


OVID - Additional comments and impressions: (O-/+ means an Ovid plus or minus.)

o-  After search performed the search box takes up most of the top of the screen.
o-  At full-text, there is no next record. Must use back button.
o+  Prev/Next in issue of journal is a nice feature
o-  Complete Record (without Full Text) | Full Text is confusing to me since "complete" should be complete!
o+  no penalty for using the back button!
o-  granted it is just a trial but the exit leaves you at the OVID login screen not the place the user started from.
o-  SMALL database! Biomedical Collection IV is only 15 journals.
o+  Table of contents is very well done and ought to be heavily used.
o-  American Journal of Health-System Pharmacy has 75 issues indexed. 1/1/1995 with 1781 citations from it. A "jump to" would be nice. In order to find out the dates of coverage for the above journal I had to page through til I found the last entry. There is no "manager" or sort option at the journal index screen.
o-  No subject headings displayed to the user.
o-  Keyword search is in the following fields: ti, ab, tx, ct

ProQuest - Additional comments and impressions: (P-/+ means a ProQuest plus or minus.)

P-  Very fast timeout. Must be only 3 minutes or so.
P-  The inability to mark records is frustrating.

I approached this thinking the OVID would be the clear winner but the more I played with the two systems the clearer it became that Proquest is better, interface wise. Content wise I can't say because I wasn't working with a full set of databases. (I.e. Biomedical IV only.)


References

1. Berinstein, Paula. Text and graphics on UMI's ProQuest Direct: the best (yet) of both world.

Online. March-April 1997, v21, n2, p73(5)

2. Thornton, Joyce K. Using Pro-Quest Direct for do-it-yourself document delivery; a case study.

Online. March-April 1997, v21, n2, p56(8)

3. Combs, Joseph. ProQuest Direct: remote research and electronic document delivery from UMI.

Library Software Review. v. 16 (Mar. '97) p. 50-63

4. Berinstein, Paula. Ovid Full Text Collections: biomedical data online comes into its own.

Online. v. 21 (Sept./Oct. '97) p. 59-62

5. Jacso, Peter. Ovid Web Gateway: nobody does it better.

Online. v. 20 (Nov./Dec. '96) p. 24-8+

6. Brandt, D. Scott. Ovid searching software.

Library Software Review. v. 15 (Fall '96) p. 141-8

7. Kirkwood, Hal. Ovid Web Gateway.

Library Software Review. v. 17 (March '98) p. 14-23

Copyright © 1998 , University of North Florida- April 21, 1998- This study completed by Reference Librarian Caryn Bush


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