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. Author manuscript; available in PMC: 2012 May 10.
Published in final edited form as: Arch Gen Psychiatry. 2011 Feb;68(2):214–220. doi: 10.1001/archgenpsychiatry.2010.191

Table 4.

Relationships between capacity to appoint a research proxy and the capacity to consent to the two RCTs involving two different levels of risk-benefit.

Capacity to Consent to Drug RCT Capacity to Consent to Neurosurgical RCT
Yes No Yes No
Capacity to Appoint Research Proxy Yes 72 (39.8%) 40 (22.1%) 29 (15.6%) 86 (46.2%)
No 3 (1.7%) 66 (36.5%) 0 (0%) 71 (45.2%)