. 2010 Jun 30;12(2):e25. doi: 10.2196/jmir.1396

Table 4.

Comparison of next query reformulation actions between resource-based and task-based system users

Search System	Next Query Reformulation Action N (%) (95% CI)
	No Change	Syntactic Change^a	Semantic Change^b	Syntactic and Semantic Changes
Resource-based (n=1398)	588 (42.1%) (39.50-44.67)	294 (21.0%) (18.97-23.24)	326 (23.3%) (21.18-25.61)	190 (13.6%) (11.89-15.49)
Task-based (n=585)	144 (24.6%) (21.30-28.26)	137 (23.4%) (20.17-27.02)	179 (30.6%) (27.00-34.45)	125 (21.4%) (18.24-24.87)

^a Syntactic change refers to changes in capitalization, typographic, ordering of words, spacing of words, and adding or removing conjunctions in a query.

^b Semantic change refers to adding, removing, or replacing words in a query.