Table 2.
Concept/Variable | Measure | Time Points | ||||||
---|---|---|---|---|---|---|---|---|
Dependent | SE | NT | T1 | T2 | T3 | T4 | EP | |
Ease | Ease of Communication Patient Self-Rating | X | Xa | Xa | ||||
Observer Rating | X | X | X | X | ||||
Quality | Observer Rating | X | X | X | X | |||
Frequency | Observer Rating | X | X | X | X | |||
Successfulness | Observer Rating | X | X | X | X | |||
Potential Covariates | ||||||||
Level of Consciousness | Confusion Assessment Method [38] | X | X | X | X | X | ||
Richmond Agitation Sedation Scale[39] | X | X | X | X | X | |||
Severity of Illness | Acute Physiology and Chronic Health Evaluation III score[40] | X | Xa | Xa | ||||
Premorbid Speech-Language Function | National Outcomes Measurement System (NOMS)[23] | X | ||||||
Current Communication Function | Lowenstein Communication Scale (LCS)[41] | X | X | X | ||||
Motor Function | Mobility Subscale of LCS | X | ||||||
Nurse Contact Time | Computerized Patient Record | X | ||||||
Time Elapsed since Training | Nurse Demographic Data Sheet | Xb | Xb | Xb | Xb | |||
Descriptive Data | ||||||||
AAC-Related Skills | Lowenstein Communication Scale (LCS) | X | Xa | Xa | ||||
Patient Characteristics | Patient Demographic Data Sheet | X | ||||||
Physical Restraint | Observation Record | X | X | X | X | X | ||
Nurse Characteristics | Nurse Demographic Data Sheet | X | Xb | X | ||||
Perceptions of Communication | Nurse Communication Survey | X | Xb | X |
Key:
Xa = Daily
Xb = Phase II & III Cohorts only
SE = Study Enrollment
NT = Nurse Training
EP = End of study participation
T1 = Day one, morning
T2 = Day one, afternoon
T3 = Day two, morning
T4 = Day two, afternoon