Perhaps you should try some spelling variations:
significantly longer » significantly lower (Expand Search), significantly larger (Expand Search), significantly higher (Expand Search)
significant linear » significant clinical (Expand Search), significant gender (Expand Search), significant level (Expand Search)
longer decrease » larger decrease (Expand Search), largest decrease (Expand Search)
linear decrease » linear increase (Expand Search)

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

• Removing quotes may allow a broader search: (( significantly longer decrease ) OR ( significant linear decrease )).