Key points are not available for this paper at this time.
Jared D. Kass, Richard Friedman, Jane Leserman, Patricia C. Zuttermeister, Herbert Benson, Health Outcomes and a New Index of Spiritual Experience, Journal for the Scientific Study of Religion, Vol. 30, No. 2 (Jun., 1991), pp. 203-211
Kass et al. (Sat,) studied this question.