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Table 1 The system saves time and improves online search efficiency (n = 35)

From: Personalized online information search and visualization

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