| new study | 109.74 | New study after baby dies during water birth. | ||
| recent study | 58.06 | A very recent study confirms this once again. | ||
| further study | 31.27 | But she called for further study. | ||
| previous study | 25.48 | But these previous studies were indirect. | ||
| scientific study | 19.55 | Dozens of scientific studies investigated the claims. | ||
| earlier study | 18.83 | These results are confirmed by earlier studies. | ||
| clinical study | 10.60 | Researchers say clinical studies are now under way. | ||
| animal study | 10.34 | Animal studies bolstered the notion. | ||
| independent study | 9.74 | Independent studies have agreed. | ||
| first study | 9.28 | Their first studies involved California. | ||
| detailed study | 7.64 | Detailed studies are already under way. | ||
| preliminary study | 7.57 | But those were preliminary studies. | ||
| similar study | 7.57 | Democrats have a similar study under way. | ||
| medical study | 7.50 | Medical studies have been inconclusive. | ||
| large study | 7.31 | A large study released UG. | ||
| religious study | 6.91 | He left to pursue conventional religious studies. | ||
| second study | 6.91 | A second study was more optimistic. | ||
| latest study | 6.85 | The latest study is par for the course. | ||
| national study | 6.78 | A new national study would seem to say so. | ||
| environmental study | 6.71 | The agency conducted an environmental study. |