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. 2012 Feb 1;35(2):247–255. doi: 10.5665/sleep.1632

Figure 2.

Figure 2

Moderation of placement effects on sleep. Panels A-C illustrate the significant interactions between placement of the Alzheimer spouse in a long-term care facility and levels of role overload and circulating cytokines for sleep measures. Level of significance within overload and cytokine level groups: *P ≤ 0.05, **P ≤ 0.01. IL, interleukin; TNF, tumor necrosis factor.