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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Am J Intellect Dev Disabil. 2011 Jan;116(1):3–15. doi: 10.1352/1944-7558-116.1.3

Table 1.

Mean, standard deviation and range of study variables

Mean SD Range
Life satisfaction 12.90 3.61 1-17
Relationship with adult child 51.46 5.35 33-60
Pessimism 6.10 2.72 0-11
Subjective burden 27.94 6.23 18-57