A word for: trends were in both directions (negative/positive or decreasing/increasing)

I have a sentence as follows. Background knowledge is that the temporal trends in the use of different types of hospital care were bidirectional/involving both increasing and decreasing changes/diversified…

Or in other words:

• the use of some hospital care types increased (change shown in percentages)
• the use of some hospital care types decreased (change shown in percentages)

Trends in the use of different types of hospital care were [need a good word here].