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Comparing patient characteristics, type of intervention, control, and outcome (PICO) queries with unguided searching: a randomized controlled crossover trial.

ABSTRACT: BACKGROUND: Translating a question into a query using patient characteristics, type of intervention, control, and outcome (PICO) should help answer therapeutic questions in PubMed searches. The authors performed a randomized crossover trial to determine whether the PICO format was useful for quick searches of PubMed. METHODS: Twenty-two residents and specialists working at the Radboud University Nijmegen Medical Centre were trained in formulating PICO queries and then presented with a randomized set of questions derived from Cochrane reviews. They were asked to use the best query possible in a five-minute search, using standard and PICO queries. Recall and precision were calculated for both standard and PICO queries. RESULTS: Twenty-two physicians created 434 queries using both techniques. Average precision was 4.02% for standard queries and 3.44% for PICO queries (difference nonsignificant, t(21)?=?-0.56, P?=?0.58). Average recall was 12.27% for standard queries and 13.62% for PICO queries (difference nonsignificant, t(21)?=?-0.76, P?=?0.46). CONCLUSIONS: PICO queries do not result in better recall or precision in time-limited searches. Standard queries containing enough detail are sufficient for quick searches.

SUBMITTER: Hoogendam A

PROVIDER: S-EPMC3324808 | biostudies-other | 2012 Apr

REPOSITORIES: biostudies-other

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Comparing patient characteristics, type of intervention, control, and outcome (PICO) queries with unguided searching: a randomized controlled crossover trial.

Hoogendam Arjen A de Vries Robbé Pieter F PF Overbeke A John P M AJ

Journal of the Medical Library Association : JMLA 20120401 2

<h4>Background</h4>Translating a question into a query using patient characteristics, type of intervention, control, and outcome (PICO) should help answer therapeutic questions in PubMed searches. The authors performed a randomized crossover trial to determine whether the PICO format was useful for quick searches of PubMed.<h4>Methods</h4>Twenty-two residents and specialists working at the Radboud University Nijmegen Medical Centre were trained in formulating PICO queries and then presented with ...[more]

PMID: 22514508

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Comparing patient characteristics, type of intervention, control, and outcome (PICO) queries with unguided searching: a randomized controlled crossover trial.

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Comparing patient characteristics, type of intervention, control, and outcome (PICO) queries with unguided searching: a randomized controlled crossover trial.

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