Figure 2.

Citation counts according to some features of article titles. A) Articles with results-describing titles were cited more often than those with methods-describing titles (p<0.001). B) Articles with titles containing a question mark were cited less often than those without such punctuation (p = 0.046). C) Articles with titles referring to a specific geographic region were cited significantly less often than those without reference to a specific region (p<0.001). D) Articles with titles containing two components separated by a colon or a hyphen had a lower number of citations compared to those with titles without this grammatical structure (p = 0.004).