Perhaps you should try some spelling variations:
significantly elevated » significantly related (Expand Search), significantly greater (Expand Search), significantly correlated (Expand Search)
significantly impaired » significantly improved (Expand Search), significantly improve (Expand Search), significantly improves (Expand Search)
elevated decrease » elevated depressive (Expand Search), estimated decrease (Expand Search), greater decrease (Expand Search)
impaired decrease » marked decrease (Expand Search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( significantly elevated decrease ) OR ( significantly impaired decrease ))~.