Brief evaluation of the NHS Evidence search function comparing NHS - - PowerPoint PPT Presentation

NHS Evidence Update

A workshop for the London Health Libraries Network Thursday 16th July 2009

Brief evaluation of the NHS Evidence search function – comparing NHS Evidence with PubMed and TRIP

By Reinhard Wentz Presented by Imrana Ghumra

Brief Comparison of Three Sources

NHS Evidence TRIP PubMed

3 sample searches

• Acupuncture in Shoulder Pain
• Ambulatory Oxygen in COPD
• Early Intervention in Psychosis

All three sources retrieve a Cochrane Review

The Cochrane Reviews

• Acupuncture in Shoulder Pain

Cochrane Review: Acupuncture for Shoulder Pain

• 1. Acupuncture for shoulder pain

...Review] Acupuncture for shoulder pain Sally Green...with general shoulder pain (of no particular...eight in the acupuncture plus mobilization...MeSH) *Acupuncture Therapy; Randomized...as Topic; Shoulder Pain [*therapy... Cochrane Database of Systematic Reviews, 20 April 2005 - Publisher: John Wiley & Sons, Ltd - Publication type: Systematic reviews

• Ambulatory Oxygen in COPD

Cochrane Review: Ambulatory Oxygen for COPD

• 1. Ambulatory oxygen for chronic obstructive pulmonary disease

...investigating the effects of ambulatory oxygen therapy in COPD met the inclusion...the treatment of COPD patients with ambulatory domicilary oxygen therapy failed to...term studies of ambulatory oxygen in patients with COPD. It is not known... Cochrane Database of Systematic Reviews, 21 January 2002 - Publisher: John Wiley & Sons, Ltd - Publication type: Systematic reviews

• Early Intervention in Psychosis

Cochrane Review: Early Intervention for Psychosis

• 2. Early Intervention for psychosis

...preventing psychosis, the common...psychosis The intervention may consist of: early detection...specific interventions (medication... 4.4 Interventions 4.4...onset of psychosis The Early Detection and Intervention Evaluation...interest in early intervention offers an...specific interventions prevent people...developing psychosis and, if... Cochrane Database of Systematic Reviews, 18 October 2006 - Publisher: John Wiley & Sons, Ltd - Publication type: Systematic reviews

Search Results for 3 Subjects on 3 Sources

• Acupuncture in Shoulder Pain

NHS E: 219 hits, Cochrane Review at Position 1 TRIP: 172 hits, Cochrane Review Position 1 PubMed: 9 hits, Cochrane Review Position 5

• Ambulatory Oxygen in COPD

NHS E: 67 / 1 TRIP: 73 / 2 PubMed: 9 / 7

• Early Intervention in Psychosis

NHS E: 993 / 2 TRIP: 396 / 1 PubMed: 36/17 PubMed Searches carried out on Clinical Queries / SRs

NHS Evidence: Some Comments

• Single Line Search: At last!!! Excellent!!!
• Ranking of Search Result very good!
• Response Time: Fast
• Most (?All) Resources Full-Text
• Finds e.g. Systematic Reviews not on PubMed

NHS Evidence: Some Comments

• Refinement (SR, Guidelines etc. possible!)
• Very TRIP-like!
• Spellchecker: Works well, not yet as good as PubMed
• Webpage looks professional, clean and is easy to

navigate

• Part of larger NHS / NLH / Nice resources. Uniform

branding

Focused Questions and telegram style search formulations – suitable for NHS Evidence

Telegram style searching: Take your clinical

• r healthcare planning question and

select those words you would send as a telegram to a friend in New Zealand to make them aware of your question. To concentrate your mind, imagine each word cost £50 – use only the minimum of search words!

How effective is a single dose of dexamethasone in croup in outpatients? Telegram: Single dose dexamethasone croup

• NHS E

9 hits 3 SR

• PubMed

23 hits 3 SR

• TRIP

30 hits 0 SR

Does the presence of a Doula reduce caesarian section rates?

Telegram: Doula caesarian section

NHS E

0 hits 0 SR

PubMed

10 hits 0 SR

TRIP

0 hits 0 SR

NHS Evidence: Some Gripes

• Most recent studies ‘hidden’ if relevance ranking is

used (default)

• Authors not always visible in result list
• Search sometimes too sensitive: irrelevant hits
• NHS Evidence is not a true Point-of-Use resource
• Dynamed will be missed, CKS to be developed!!

NHS Evidence Motto: Keep it simple!

KISS

Reinhard Wentz

sleuthmedical@yahoo.com

21.05.2009