George Warren Brown School of Social Work at Washington University in St. Louis
Center for Mental Health Services Research

CMHSR Measures Collection

Duke Social Support Index (DSSI)

Location: O3

AUTHORS: Landerman, R. L., & George, L. K. et al. (1989)

SOURCE:
Landerman, R.L., Georage, L.K., Campbell, R.T., & Blazer, D.G. (1989) Alternative models of the stress buffering
    hypothesis. American Journal of Community Psychology, 17(5), 625-642.

VARIABLES MEASURED: The social network and the support provided by that network.

DESCRIPTION/DEVELOPMENT:
The Duke Social Support Index (DSSI) is a 35-item battery developed for NIMH epidemiologic Catchment Area (ECA) Program..
This Index intends to assess the social network of the elderly and the support provided by that network.  Four dimensions of social support are included, they are: satisfaction with social support (4-item), perceived social support (7-item), frequency of social interaction (4item), size of the social network (4-item), and instrumental support
(13-item).

SUBJECTS: Not specified

ADMINISTRATION: by lay interviewers

SCORING:
The social support score of each dimension is calculated by summing item scores of that dimension.
Each dimension is categorized as impaired (scores in bottom fifth of scale) vs. unimpaired support.

RELIABILITY:
Internal consistence: Satisfaction with social support (a=.64)
Perceived social support (a=.80)

VALIDITY:
Factor analysis: Five factors with eigenvalues greater than 1 were observed and the five-factor solution explained 82% of the variance among items.  Only items with factor loadings of .40 or greater were included in the scale.

COMMENTS:
1. This file is in file
2. Two abbreviated scal;s (23 and 11 items) are in file.

REFERENCES:

Koenig, H.G., Westlund, R.E., George, L.K., Hughes, D.C., Blazer, D.G. & Hybels, C. (1993).  Abbreviating the Duke
    Social Support Index for use in chronically ill elderly individuals. Psychomomatics, 34(l), 61-69.

Landerman, R.L., Georage, L.K., Campbell, R.T., & Blazer, D.G. (1989). Alternative models of the stress buffering
    hypothesis.  American Journal of Community Psychology, 17(5), 625-642.

George, L.K., Blazer, D.G., Hughes, D.C., & Fowler, N. (1989).  Social support and the outcome of major depression.
    British Journal Psychiatry, 154, 478-485.


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