Demographic analysis of Soka Gakkai members from 1969

From James Allen Dator's "Soka Gakkai: Builders of the Third Civilization", p. 93:

We conclude, then, that the Soka Gakkai members are in the lower, but not lowest, socioeconomic strata of Japanese society; that they are a somewhat less satisfied and more "friendless" group; that they generally had no religious affiliation before joining the Soka Gakkai, and joined to relieve a physical, mental, or sociological distress, although about 1/5 joined because others in their family were members before them. We saw that Soka Gakkai members had attitudes toward work that seemed to be quite atypical of Japanese generally: They were less committed to hard work as a means of achieving their ends, and relied more on "luck".

This comes as no surprise to me - if anyone wants further details, just post the request, the more specific the easier to respond to, and I'll transcribe the relevant portion from the book.