Key points are not available for this paper at this time.
George J. Warheit, Charles E. Holzer, III, John J. Schwab, An Analysis of Social Class and Racial Differences in Depressive Symptomatology: A Community Study, Journal of Health and Social Behavior, Vol. 14, No. 4 (Dec., 1973), pp. 291-299
Warheit et al. (Sat,) studied this question.