Table A2.
Mean differences in collaboration and publication characteristics, synthesis center articles vs. reference corpus
| Variable | Synthesis center articles (n=1526) | Reference corpus (n=13,535) | Difference (sig.) |
|---|---|---|---|
| Number of authors | 4.80 | 4.31 | 0.49*** |
| Number of institutions | 4.24 | 2.66 | 1.58*** |
| Number of references | 55.7 | 48.4 | 7.43*** |
| Proportion of topic weight removed as junk | 0.35 | 0.34 | 0.012*** |
| Count of tokens per document (after stop word removal) | 109 | 113 | 4.3*** |
| Publication year | 2006 | 2006 | 0.032 |
*= p < .05; **= p < .01; ***= p < .001