Table A1.
Mean differences in diversity and its components, synthesis centers and reference corpus (N=15,037)
matched sample (up to 10 controls per synthesis center paper)
| Variable | Synthesis center articles (n=1526) | Reference corpus (n=13,535) | Difference (sig.) | |
|---|---|---|---|---|
| Variety | Variety | 6.75 | 6.41 | 0.034*** |
| Evenness | Shannon Evenness | 0.85 | 0.83 | 0.026*** |
| Shannon | Shannon Entropy | 1.96 | 1.85 | 0.106*** |
| Stirling | Mean Disparity | 0.33 | 0.33 | -0.002 |
| D50 | Median Disparity | 0.35 | 0.35 | 0.000 |
| Disparity | Non-weighted Disparity | 0.42 | 0.44 | 0.02 |
| D90 | Top 10% Variety | 0.83 | 0.83 | 0.008 |