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Table 2 Negative binomial analysis for factors associated with follow-up PSQI scores (n = 112)

From: Association of intensive care unit delirium with sleep disturbance and functional disability after critical illness: an observational cohort study

Factor Rate ratio (95% confidence interval) p value
Age 0.990 (0.982, 0.998) 0.013*
Female gender 1.056 (0.851, 1.309) 0.620
Preexisting depression 1.335 (1.036, 1.720) 0.025*
APACHE II 1.005 (0.982, 1.028) 0.664
Hospital LOS 1.003 (0.993, 1.014) 0.531
Mechanically ventilated during ICU admission 0.867 (0.622, 1.208) 0.399
Time to interview in days 1.000 (0.998, 1.001) 0.541
Total days of delirium 1.114 (1.023, 1.212) 0.013*
  1. APACHE II Acute Physiology and Chronic Health Evaluation II, ICU intensive care unit, LOS length of stay, PSQI Pittsburgh Sleep Quality Index
  2. *p < 0.05