Table 3.

Associations between Characteristics and Duration of Nurse Talk (Univariate Results)

	b	SE	t-value	p-value
Baseline Nurse Characteristics
Age (years)	−0.006	0.015	−0.39	.698
Gender- Male	0.416	0.331	1.26	.2125
Credentials- Diploma or Associate Degree	−0.520	0.319	−1.66	.103*
Years in Nursing Practice	−0.004	0.013	−0.28	.781
Years in Critical Care Practice (Linear)	0.016	0.032	0.51	.6141*
Years in Critical Care Practice (Quadratic)	−0.003	0.002	−1.66	.103*
Baseline Patient Characteristics
Age (years)	0.008	0.008	1.02	.311
Gender- Male	0.239	0.245	0.95	.348
Race- White	−0.502	0.419	−1.20	.237
Education (years) (n=88)	0.035	0.047	0.75	.4582
Baseline Patient Clinical Characteristics
CAM-ICU- Delirium Present	0.113	0.292	0.39	.701
RASS- Sedated or Agitated	−0.1719	0.288	−0.60	.553
APACHE III	0.007	0.007	1.01	.314
Prior Intubation History- Yes	−0.239	0.255	−0.94	.352
Days Intubated Prior to Enrollment (Linear)	−0.024	0.008	−3.14	.003*
Days Intubated Prior to Enrollment (Quadratic)	<0.001	<0.001	2.53	.015*
Session-Dependent Patient Clinical Characteristics
CAM-ICU– Delirium Present (n=87)	−0.182	0.242	−0.75	.452
RASS- Sedated or Agitated	−0.5129	0.230	−2.23	.027*
GCS- Score ≤14	−0.801	0.312	−2.57	.011*
APACHE III (calculated by day)	0.007	0.006	1.11	.271
Type of Intubation- Oral Intubation	−0.070	0.335	−0.21	.835
Covariate
Time elapsed from nurse enrollment to first session (Days)	0.002	0.002	1.05	.299

Note: Variable (Referent)- Gender (Female), Race (Black), CAM-ICU (Delirium Absent), RASS (Calm), GCS (Score of 15), Type of Intubation (Tracheostomy)

Abbreviations: APACHE- Acute Physiology and Chronic Health Evaluation, CAM-ICU- Confusion Assessment Method for the ICU, RASS- Richmond Agitation and Sedation Scale, GCS- Glasgow Coma Scale

^*Denote screened variables that were considered jointly in the univariate model.