Table 1

The system saves time and improves online search efficiency (n = 35)

Questions

Criteria

Scale

Mean ± SD


The system

useful

1 for not at all and 9 very useful

7.5 ± 1.4

easy to use

1 for very difficult to 9 very easy

6.6 ± 2.3

will use it regularly

1 for not and 9 certainly will

6.5 ± 2.2

recommend using it

1 for not and 9 highly

7.5 ± 2.0

Efficiency

time prior to using it

0.5, 1.0, 1.5, ...4.0 hrs/wk

2.2 ± 1.3

time after using it

0.5, 1.0, 1.5, ...4.0 hrs/wk

1.0 ± 1.2*

Relevancy

relevant articles

10, 20, ..., 90%

69.3 ± 19.4

new among the relevant

10, 20, ..., 90%

33.6 ± 15.7

Users

know MeSH before

1 for not at all and 9 for expert

3.2 ± 2.0

new to computer

1 for new and 9 for expert.

6.3 ± 2.4

reasons to try it

too busy to search

74%

too time consuming

43%

too many irrelevant reports

17%

frustrated when searching

11%


*p < 0.001 using paired t-test assuming equal variances as compared with hours spent weekly prior to using system.

Chen et al. BMC Medical Informatics and Decision Making 2005 5:6   doi:10.1186/1472-6947-5-6

Open Data