Word request: different-level factors?

Let's suppose that clinical care is poor due to numerous reasons: policy-making, insufficient resources, specialists, education, non-use of standards etc.

How to say this in one word that describes the nature of these numerous reasons? Would it be correct to use different-level?

Clinical care is poor due to numerous different-level reasons.

Solution 1:

You can use "due to multiple reasons": WordHippo defines multiple as:

Numerous and often varied

• We have multiple options to choose from for our next holiday.

I like very much manifold, though it may be considered a bit antiquated. It goes very well in formal writing though. It means:

Many and various or having more than one layer (WordHippo)

See this example from Cambridge:

many and of different types:

• Our organization’s problems are manifold – too few members, too little money, and poor management.