I have no idea, have you searched the Cochrane library to see if there is a systematic review ? I had a dream the other day that the local church burnt down, have no idea what that means, a new building there would not be a bad thing, could mean a lot of things I guess that dream.
I am going to do a research about dream recall frequency and dream content In Iran,I have question about correct sample size ,If you Can help me, I will message you the details in private.