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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Res Gerontol Nurs. 2014 Jan 21;7(3):106–112. doi: 10.3928/19404921-20140110-02

Table 1.

Enrollment and Assessment Timeline

Event 2007 2008 2009 2010 2011 2012
Enrollment, n= 171 10 8
Placement, n= 2 6 11 14 4
Other attrition1, n= 1 9 8 16 51 13
Assessment
Social Activity + + + + + +
Sleep Disturbance2 + ◆ ◆ +
Depressive Symptoms + ◆ ◆ ◆ ◆ +
ADL Impairment + + + + + +
Medical Conditions + + + + + +
Mini-Mental State Examination + + + + + +
Clinical Dementia Rating Scale + + + + + +

Notes. ADL= Activity of Daily Living; += measure assessed at annual intervals; ◆= measure assessed at 6-monthly intervals

1

Attrition due to deaths, dropouts, and un-enrollment by the research team. All un-enrollment occurred in 2011 in order to focus the ISAAC study on only those participants living alone.

2

Assessment occurred partially online (baseline measure completed on paper).