MELVYL MEDLINE DATABASES TELNET STATISTICS
Time period: 06/30/01 through 07/06/01
1.0 SUMMARY STATISTICS
_______________________
Sessions: Medical/Health/
Life Sciences All Other
Libraries Libraries Remote Total
_______________ _________ _________ _________
Berkeley 0 50 404 454
Davis 17 320 50 387
Irvine 0 242 0 242
Los Angeles 0 9 88 97
Riverside 0 8 81 89
San Diego 94 328 32 454
San Francisco 90 0 1,116 1,206
Santa Barbara 0 3 57 60
Santa Cruz 4 2 36 42
Stanford 198
Other (including DLA) 0 0 1,496 1,496
_______________ _________ _________ _________
Total: 205 962 3,360 4,725
Relative use of MEDLINE databases
Number of Number of Number of
Sessions FIND commands Records Displayed
________ _____________ _________________
MED (current) 3,444 11,117 139,787
MED90 database 571 1,399 9,142
MED85 database 304 710 3,056
MED80 database 218 575 2,699
MED75 database 94 255 978
MED66 database 94 269 1,295
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 87 302 2,797
2-4 a.m. 25 126 608
4-6 a.m. 43 86 593
6-8 a.m. 136 359 2,463
8-10 a.m. 565 1,497 11,781
10-12 a.m. 915 2,792 24,291
12-2 p.m. 846 2,398 21,008
2-4 p.m. 900 2,776 29,216
4-6 p.m. 612 2,233 21,185
6-8 p.m. 296 835 12,679
8-10 p.m. 178 530 27,241
10-12 p.m. 122 391 3,095
__________ __________ __________ _________________
Total: 4,725 14,325 156,957
Session length (minutes:seconds):
Medical/Health/
Life Sciences All Other
Libraries Libraries Remote Total
_______________ _________ _________ _________
Assist:
Average 0.0 0.0 0.0 0:00
Median 0.0 0.0 0.0 0:00
Command:
Average 15:46 13:50 17:46 14:18
Median 12:32 7:58 13:43 8:58
Total:
Average 15:46 13:50 17:46 14:18
Median 12:32 7:58 13:43 8:58
Response time (in seconds): Std.
Avg. Dev.
______ ______
Search - from receipt of command at DLA until 0.5 1.6
transmission of response
Display - from receipt of command at DLA until 0.0 0.0
transmission of a complete screen
Use of Assist vs Command mode: Number of Percentage of
Sessions Searches
_________ _____________
Assist mode 0 0.0%
Command mode 4,725 100%
E MED option:
E MED chosen from Welcome screen 0
E MED chosen from Assist screens 0
Specific screens chosen from within E MED:
Master Menu 0
FIND command 0
FIND command examples 0
DISPLAY command 0
DISPLAY command - other options 0
BROWSE command 0
BROWSE DISPLAY options 0
SELECT command 0
Assistance commands 0
START and END commands 0
Other commands 0
Combine commands 0
SHOW HISTORY command 0
SAVE command 0
COMMENT command 0
2.0 ASSIST MODE
________________
Assist mode sessions as: % of Campus
% of Total MELVYL MEDLINE
Assist Sessions Sessions
_______________ ______________
Berkeley 0.0% 0.0%
Davis 0.0% 0.0%
Irvine 0.0% 0.0%
Los Angeles 0.0% 0.0%
Riverside 0.0% 0.0%
San Diego 0.0% 0.0%
San Francisco 0.0% 0.0%
Santa Barbara 0.0% 0.0%
Santa Cruz 0.0% 0.0%
Stanford 0.0% 0.0%
Other 0.0% 0.0%
% of Group
% of Total MELVYL MEDLINE
Assist Sessions Sessions
_______________ ______________
Medical/Health/Life Sciences 0.0% 0.0%
All Other Libraries 0.0% 0.0%
Remote 0.0% 0.0%
SEARCH information:
Average number of searches completed per session 0.0
Retrievals per search - average 0.0
Retrievals per search - median 0.0
Retrievals per search - standard deviation 0.0
Percent of searches completed with 0 results 0.0%
COMMANDS entered, by type, excluding errors:
% of all
Total Commands
__________ __________
FIND 0 0.0%
DISPLAY (excluding automatic displays) 0 0.0%
BROWSE SU 0 0.0%
SELECT 0 0.0%
HELP 0 0.0%
SAVE 0 0.0%
ADD-ON (AND, OR) 0 0.0%
LOGON or LOGOFF 0 0.0%
FINDS completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 0 0.0% 0 0.0% 0 0.0 0.0
LIMITS:
Number of times limits (bit strings) used: 0
Use by bit string (percentage):
Current year 0.0%
English Language 0.0%
XS Aged 0.0%
XS Animal 0.0%
XS Case Report 0.0%
XS Child 0.0%
XS Female 0.0%
XS Human 0.0%
XS Male 0.0%
PT Review 0.0%
BOOLEAN:
Number of searches with Booleans: 0
(FIND, BROWSE, SELECT, ADD-ON)
Percentage of ANDs 0.0%
Percentage of ORs 0.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
BRIEF 0.0%
LONG 0.0%
TITLE/SUBJECT 0.0%
3.0 COMMAND MODE
________________
SEARCH information:
Average number of searches completed per session 3.0
Retrievals per search - average 1161.9
Retrievals per search - median 9.0
Retrievals per search - standard deviation 8443.1
Percent of searches completed with 0 results 20.9%
Percent of searches entered that are long 0.4%
Percent of long searches completed 67.3%
COMMANDS entered, by type, excluding errors:
% of all
Total Commands
__________ __________
FIND 10,490 14.4%
DISPLAY (excluding automatic displays) 45,958 63.0%
BROWSE 382 0.5%
SELECT 170 0.2%
HELP 206 0.3%
EXPLAIN 244 0.3%
SAVE 2,548 3.5%
SET/RESET 2,276 3.1%
SHOW 178 0.2%
ADD-ON (AND, OR, AND NOT) 3,246 4.5%
LOGON or LOGOFF 5,357 7.3%
COMMENT 0 0.0%
OTHER 1,860 2.6%
FINDS completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_______________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
________ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 4,647 29.9% 1,028 22.1% 12 125.3 756.6
TITLE WORD 1,827 11.8% 614 33.6% 8 501.3 3987.4
EXACT TITLE 82 0.5% 28 34.1% 1 87.4 403.3
JOURNAL 742 4.8% 203 27.4% 228 2829.9 9447.5
EXACT JOURNAL 578 3.7% 63 10.9% 4,467 9217.2 12437.3
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 5,082 32.7% 970 19.1% 22 1412.4 11074.4
SUBJECT WORD 14 0.1% 8 57.1% 275 2898.2 4265.6
SUBJECT 419 2.7% 151 36.0% 199 1799.1 5850.3
MAJOR SUBJECT 119 0.8% 8 6.7% 624 3221.4 4119.1
EXACT SUBJECT 220 1.4% 64 29.1% 59 1178.0 3482.4
MAJOR XS 85 0.5% 15 17.6% 53 1205.9 3407.5
EXPLODE XS 99 0.6% 22 22.2% 617 18840.6 57454.5
EXPLODE MAJOR 21 0.1% 0 0.0% 327 2647.8 5971.6
TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
MAJOR TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 820 5.3% 170 20.7% 14 180.8 1301.8
LANGUAGE 298 1.9% 11 3.7% 77 785.5 0.0
PUB TYPE 375 2.4% 10 2.7% 36 341.6 1092.8
Other indexes 246 1.6% 32 13.0% 1 1441.9 7720.6
By number of indexes:
Multiple 5,101 37.2% 1,069 21.0% 13 1386.5 6344.4
Single 8,604 62.8% 1,801 20.9% 31 1593.1 11087.5
BROWSES completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 7 1.9% 0 0.0% 1 1.0 0.0
JOURNAL 41 10.9% 8 19.5% 1 9.8 26.3
EXACT JOURNAL 7 1.9% 6 85.7% 1 1.0 0.0
SUBJECT 307 81.9% 53 17.3% 3 14.2 80.4
EXACT SUBJECT 13 3.5% 1 7.7% 1 5.4 13.8
TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 375 100% 68 18.1% 3 13.0 73.7
LIMITS:
Number of times limits (bit strings) used: 960
Use by bit string (percentage):
Current year minus 5 31.6%
Current year minus 4 0.0%
Current year minus 3 0.4%
Current year minus 2 0.5%
Current year minus 1 0.4%
Current year 0.4%
English Language 34.1%
French Language 0.1%
Japanese Language 0.0%
German Language 0.0%
Russian Language 0.1%
XS Abstract 0.6%
XS Adolescence 0.0%
XS Adult 0.0%
XS Aged 0.0%
XS Animal 0.0%
XS Case Report 0.0%
XS Child 0.3%
XS Comparative Studies 0.0%
XS English Abstract 0.0%
XS Female 0.6%
XS Human 8.9%
XS Infant 0.0%
XS Infant, Newborn 0.4%
XS Male 0.0%
XS Mice 0.0%
XS Middle Age 1.7%
XS Rats 0.0%
XS Support Non-U.S. Govt 0.0%
XS Support U.S. Govt, Non-P.H.S. 0.0%
XS Support U.S. Govt, P.H.S. 0.0%
PT Review 17.5%
PT Journal Article 0.2%
SUBSET AIM 1.7%
SUBSET Indexing priority 1,2 0.0%
SUBSET Nursing journals 0.4%
SUBSET Dental journals 0.0%
SUBSET Cancer core journals 0.1%
BOOLEAN:
Number of searches with Booleans: 5,892
(FIND, BROWSE, SELECT, ADD-ON)
Percentage of ANDs 88.4%
Percentage of ORs 3.7%
Percentage of AND NOTs 7.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.1%
BRIEF 22.8%
LONG 0.7%
MEDLINE 0.5%
FIELDS 1.5%
PERIODICALS 0.0%
BROWSE REVIEW 0.6%
BROWSE LONG 0.3%
BROWSE FIELDS 0.0%
BROWSE MEDLINE 0.0%
Other 72.4%
4.0 Error, EXPLAIN, HELP statistics (ASSIST & COMMAND)
_______________________________________________________
Percent of commands that contained errors 4.9%
Ten most frequent errors:
1. NS command - no next screen 40.1%
2. First word of command is invalid 23.4%
3. FIND command with invalid index name 7.0%
4. DISPLAY command contains invalid word 4.2%
5. PS command - no previous screen 1.9%
6. Add-on search with invalid index name 1.8%
7. NS of SHOW/EXP command-no next screen 1.8%
8. DISPLAY command - no FIND results 1.6%
9. Search term missing from search command 1.5%
10. Valid command at an inappropriate time 1.4%
11. All others 15.4%
Ten most frequent EXPLAIN requests:
1. BOOKS DATABASE 10.7%
2. Unrecognized term 9.0%
3. MEDLINE BACKFILES 8.2%
4. FIND 7.8%
5. MAIL 5.7%
6. COMMANDS 5.7%
7. DATABASES 5.3%
8. LOCATE (article dbs w/o monographs) 4.1%
9. INDEXES 4.1%
10. SETTINGS 4.1%
11. All others 25.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.0%
2. First word of command is invalid 13.6%
3. FIND command with invalid index name 8.2%
4. DISPLAY command - last of >1 screen 6.7%
5. DISPLAY command - middle of >1 screen 5.3%
6. NS of SHOW/EXP command-no next screen 4.2%
7. DISPLAY command-first of >1 screen 3.3%
8. FIND command retrieves >1 book 2.7%
9. NS command - no next screen 2.4%
10. Add-on without index name 2.4%
11. All others 35.2%
Ten most frequent SHOW requests:
1. HISTORY 79.5%
2. SEARCH 8.0%
3. MAIL STATUS 4.5%
4. MAIL SETTINGS 1.8%
5. SETTINGS 1.8%
6. MEDLINE LOADING STATISTICS 1.8%
7. MEDLINE GLOSSARY 0.9%
8. MEDLINE STATISTICS 0.9%
9. UPDATE 0.9%
11. All others 0.0%
MEDmm/dd med MELVYL MEDLINE DATABASES TELNET STATISTICS (weekly)