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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Psychosomatics. 2015 May 15;56(6):644–651. doi: 10.1016/j.psym.2015.05.002

Table 6.

Instrumental activities of daily living – comparison of preoperative assessment to 30 days after surgery assessment in patients with subsyndromal delirium vs. those with delirium

Change in instrumental activities of daily living (preoperative to 30 days postoperatively)
Deterioration No Change Improvement
113 (44.3%) 129 (43.3%) 38 (12.7%)
Number of subsyndromal delirium features - Count (Row %)
Deterioration No Change Improvement
0 40 (31.2%) 72 (56.3%) 16 (12.5%)
1 18 (51.4%) 12 (34.3%) 5 (14.3%)
2 12 (48.0%) 10 (40.0%) 3 (12.0%)
3+ 63 (56.3%) 35 (31.3%) 14 (12.5%)
Delirium - Count (Row %)
Deterioration No Change Improvement
No 79 (38.5%) 101 (49.3%) 25 (12.2%)
Yes 51 (58.0%) 25 (28.4%) 12 (13.6%)

P = .005

P = .003

When comparing the instrumental activities of daily living (IADL) from before surgery to that measured at 30 days after surgery, patients with one or more features of SSD were more likely to have deterioration in IADL, defined as new dependency in one or more activities of IADL, when compared to those with no delirium or no subsyndromal delirium.