Key points are not available for this paper at this time.
Dorothy Swaine Thomas, Ben Z. Locke, Marital Status, Education and Occupational Differentials in Mental Disease: State Patterns in First Admissions to Mental Hospitals for All Disorders and for Schizophrenia, New York and Ohio as of 1950, The Milbank Memorial Fund Quarterly, Vol. 41, No. 2 (Apr., 1963), pp. 145-160
Thomas et al. (Mon,) studied this question.