Table 1.

Operational Definition

FACTORS	DEFINITION	REFERENCES
Patient factors
Clinical factors	Mental status (AVPU), GCS	Kim et al.,1Kim and Song,6 Gravel et al.16
Nonclinical factors	Transport distance, transport time, EMT's qualifications
Social factors
Subjective norm	Recognition of the expectations of the EMT's behaviors by others whose opinions critically influence them	Chen et al.,18Smucker and Creekmore20
Expectation confirmation	Conformance between the EMT's expectations of and satisfaction with the technology	Bhattacherjee,19 Lin et al.21
Organizational factors
Loyalty incentives	Material loyalty incentives for continued utilization	Bhattacherjee19
Job fit	Increased efficacy of job performance because of repeated utilization	Bhattacherjee19
Organizational facilitation	General support for technology management, education, and utilization	Bhattacherjee19
Perceived usefulness	Degree of recognition that technology utilization is associated with improvements in the user's job performance	Davis et al.,3 Venkatesh and Davis13
Perceived ease of use	Degree of perceived ease of technology utilization
Attitude	The individual's feelings regarding the technology (e.g., positive/negative and in favor of/against)	Davis et al.,3 Venkatesh and Davis13
Use intention	Influenced by attitudes and closely related to actual and predicted behavior	Davis et al.,3 Venkatesh and Davis13

AVPU, alert, (responsive to) voice, (responsive to) pain, unresponsive; EMT, emergency medical technician; GCS, Glasgow Coma Scale.