Tracking changes in search behaviour at a health web site Ann-‐Marie Eklund University of Gothenburg, Sweden ann-‐
[email protected]
INTRODUCTION
IntroducCon • Na+onal interest to ensure usable health informa+on portals for the general public • Important to understand the impact of media coverage, informa+on campaigns and the public state of health on the use of health portals • May seman+c analysis of health search logs be a means to study these factors?
THE SEARCH LOG
Search log extract 6e9b38da3b94358f084ad38d529e0e05;halsont;2010-10-07 15:16:55.157;2010-10-03 07:05:18.730;7D98638DB18964AA82ABD3042DFBBDDB;http://vard.vgregion.se/ sv/Sjukdomar-och-besvar/Sjukdomar/Sjukvardsradgivningen/? CatId=26252&ChapId=26254;3;44;hit
3b46869d85cbbc2e70a528b85639e594;ont i halsen;2010-11-02 12:24:48.927;2010-10-15 07:55:06.740;8C97D6640120CFD06807745E4A7F17B2;http://vard.vgregion.se/sv/ Sjukdomar-och-besvar/Sjukdomar/Sjukvardsradgivningen/? CatId=26252&ChapId=26256;1;176;hit
Search query Session Clicked link
Search log staCsCcs • 230 754 interacCons • 27 881 sessions • 8 871 disCnct queries Queries Sessions
Month
Sessions
2010-‐07
621
08
813
09
940
10
2 667
Queries
11
2 325
1
3 726
12
2 059
2
2 785
2011-‐01
2 869
3
1 591
02
3 153
Words
1
25 411
4
444
03
3 153
2
2 020
5
182
04
1 852
3
327
6
80
05
1 977
4
74
7
21
06
1 567
5
28
8
22
07
1 427
6-‐22
21
9-‐15
18
08
1 583
Search log staCsCcs Most common queries
Sessions
Mina vårdkontakter (My health care contacts)
359
Egenremiss (Self referral)
246
Sjukresor (Travels to health care faciliCes)
220
VaccinaCon (VaccinaCon)
211
Gravid (Pregnant)
182
UrinvägsinfekCon (Urinary tract infecCon)
180
Feber (Fever)
177
Influensa (Influenza)
174
VårdgaranC (Health care guarantee)
171
Byta vårdcentral (Change primary care giver)
167
Webbisar (Newborns)
154
ANNOTATION OF QUERIES
“Sore throat” Sign or Symptom 6e9b38da3b94358f084ad38d529e0e05;halsont;2010-10-07 15:16:55.157;2010-10-03 07:05:18.730;7D98638DB18964AA82ABD3042DFBBDDB;http://vard.vgregion.se/ sv/Sjukdomar-och-besvar/Sjukdomar/Sjukvardsradgivningen/? CatId=26252&ChapId=26254;3;44;hit
3b46869d85cbbc2e70a528b85639e594;ont i halsen;2010-11-02 12:24:48.927;2010-10-15 07:55:06.740;8C97D6640120CFD06807745E4A7F17B2;http://vard.vgregion.se/sv/ Sjukdomar-och-besvar/Sjukdomar/Sjukvardsradgivningen/? CatId=26252&ChapId=26256;1;176;hit
“Sore throat” Sign or Symptom
SemanCc Types
smärta paracetamol
[Sign or Symptom] [Pharmacologic Substance]
Mapping of queries by UMLS • Map the whole query to a concept if possible, otherwise map query terms – AutomaCc look-‐up in the UMLS – Semi-‐automaCc mapping (locaCon, organizaCon and person) • UMLS semanCc type for each concept • Map concept to MeSH
RESULTS
SemanCc type of queries over Cme 25.0%
20.0% [Disease or Syndrome] [Health Care AcCvity] 15.0%
[Geographic Area] [Sign or Symptom] [TherapeuCc or PrevenCve Procedure]
10.0%
[Finding] [OrganizaCon] [Body Part, Organ, or Organ Component]
5.0%
[Organic Chemical]|[Pharmacologic Substance] [NeoplasCc Process] [DiagnosCc Procedure]
0.0%
SemanCc type of queries over Cme 25.0%
20.0% [Disease or Syndrome] [Health Care AcCvity] 15.0%
[Geographic Area] [Sign or Symptom] [TherapeuCc or PrevenCve Procedure]
10.0%
[Finding] [OrganizaCon] [Body Part, Organ, or Organ Component]
5.0%
[Organic Chemical]|[Pharmacologic Substance] [NeoplasCc Process] [DiagnosCc Procedure]
0.0%
MeSH category of query concepts over Cme 16.0% Health OccupaCons (H02) 14.0% Health Services AdministraCon (N04) 12.0%
10.0%
Geographic LocaCons (Z01) Pathological CondiCons, Signs and Symptoms (C23)
8.0%
Nervous System Diseases (C10)
6.0%
Health Care FaciliCes, Manpower, and Services (N02) Persons (M01)
4.0% Health Care Economics and OrganizaCons (N03) 2.0%
0.0%
Respiratory Tract Diseases (C08) Virus Diseases (C02) Bacterial InfecCons and Mycoses (C01)
MeSH category of query concepts over Cme 16.0% Health OccupaCons (H02) 14.0% Health Services AdministraCon (N04) 12.0%
10.0%
Geographic LocaCons (Z01) Pathological CondiCons, Signs and Symptoms (C23)
8.0%
Nervous System Diseases (C10)
6.0%
Health Care FaciliCes, Manpower, and Services (N02) Persons (M01)
4.0% Health Care Economics and OrganizaCons (N03) 2.0%
0.0%
Respiratory Tract Diseases (C08) Virus Diseases (C02) Bacterial InfecCons and Mycoses (C01)
RelaCve change in MeSH categories over Cme
RelaCve change in MeSH categories over Cme
CONCLUSIONS
Conclusions • Health status – VariaCon in interest over Cme in types of diseases
• Informa+on campaigns – VariaCon in geographic area stands out
A seman+c analysis of health search logs may show the impact of media coverage and informaCon campaigns and the public state of health in a country
