I got very into this stuff several years after our kid died and have managed a number of OBE's as well as regular lucid dreaming. At this point, if I decide to make an effort at having an "altered state" I can usually achieve it within a few tries over several days. These "successes" may manifest as something as unimpressive as a lucid dream, but very occasionally can be accompanied by additional OBE characteristics (aware of being in bedroom, seeing the house, walking through the house, etc.)
I went through the literature fairly extensively and found very little that could only be interpreted as a confirmation of an objective out-of-body state. Tart wrote up one case with a woman who managed to report something and it seemed the easiest explanation was true OBE state - but one strong (not iron clad) case in the whole of literature starts to sound like coincidence.
People in this field speculate about multiple astral planes, not just one. For example, Robert Bruce speculates about ---- maybe 7 or eight, and only the one "nearest" the "physical plane" will have any hope of accurately mirroring the physical world.
While these descriptions are essentially worthless as they leave very little predictive value, they do match up with my personal experience.
I wanted an irrefutable "jackpot" veridical OBE (and still do) and in the beginning I had my husband hide something for me to identify while out of body. I found that although I could attain a subjective "out of body" state, that when I tried to direct my focus to identifying the object, things became very confused. * This made the success of a "jackpot" veridical OBE pretty low, and we modified the "experiment" such that he placed something from a pre-set pool of objects. So I knew beforehand that he might set x, y, or z --- and I simply had to distinguish between these three possibilities. This is not as spectacular a type of experiment, but we've had success with it. I believe we've had about 4 trials over the years, and I believe I've been correct in all - except I gave up in one of them because I couldn't get a fix. Still, since we work with a small pool, four successes isn't much statistically speaking - it's something like flipping a head on a coin four times in a row.
(I don't believe I'm psychotic, on the other hand how would I know?

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I would have to say that if OBE's reflect the afterlife, that it is a very fluid and confusing place indeed. This is not necessarily a good thing, it's damn frustrating.
Agnostically yours,
Patty
* What was fun (and worthless in terms of data) about the initial experiment was that one manner in which the experience was "fuzzy" was that I saw a crumpled coke can during my initial attempt to identify husband's choice. I knew he wouldn't have placed a crumpled coke can, this is one reason we revised the experiment. When we went to clear off the high shelf to set up the next experiment (the high shelf was not visible to me during waking hours, and was our hiding spot for these experiments) I discovered an old tab from a soda can. It had been there since before we moved in. As I said, this is worthless, but there is something "real," if only subjectively, about these sorts of experiences, and so the remains of the coke can still makes me grin.