Superstition can be inversely proportional to education. Cultivation should be proportional to education.
That term you used is very slippery (actually, you used it as the opposite of a "superstition" - you gave it only the interpretation typical of later uses).
Yes, sorry, of course you meant that aspect. But the term remains too slippery, too far away from its real content - as can be apparent already in the stats you mention: first of all they are about a public expression, which are reasonably lower in some demographics for more reasons, and secondly they conflate very different phenomena (such as a very ambiguous idea of attributed "importance" vs the subscription to some dogmatic details).
There are also other reasons why you see different behaviours in doctors and nurses: already linguistically, the "nurse" "nourishes", the "doctor" remains the "learned" - one has a direct rapport, the other detached, out of the basic role construed. It just follows that the nurse more probably consoles and the doctor more probably communicates flatly.
That term you used is very slippery (actually, you used it as the opposite of a "superstition" - you gave it only the interpretation typical of later uses).