Device Name	Device Function	Device Type	Construct
HR Monitor #12	Cardiac	ECG (chest)	Fatigue
Parameter	Assessment method	Score
Measurement Principles
Sensitivity	Sensitive to three levels of fatigue	0  1  2  3  4  ⑤
Specificity	False alarm rate < 5%	0  1  2  ③  4  5
Validity	Cross Correlation > 0.8	0  1  2  3  4  ⑤
Reliability	Show test retest reliability	0  1  2  3  4  ⑤
Diagnosticity	Identifies source of fatigue	0  1  ②  3  4  5
Generalizability	ECG not affected by skin quality	0  1  2  3  ④  5
Usability Principles
Intrusiveness	No distractions from device?	0  1  2  3  4  ⑤
Weight/Size	Device is a good weight/size	0  1  2  3  ④  5
Ease of use	No issues taking device on/off	0  1  2  3  4  ⑤
Acceptance	Operators feel the device is fair and transparent?	0  1  2  3  4  ⑤
Wireless communication/connectivity	Device didn’t disconnect more than 1 time?	0  1  2  3  4  ⑤
Individual Differences	N/A	0
Wearability	Device didn’t cause discomfort?	0  1  2  3  ④  5
Power Consumption	Battery didn’t die on shift?	0  1  2  3  4  ⑤
Design Parameters
Toughness	Device didn’t break?	0  1  2  3  4  ⑤
Water Tolerance	N/A	0
Interaction Method	Touch screen worked well?	0  1  2  3  ④  5
Onboard vs. secondary device processing	N/A	0
Modularity	N/A	0
Type of electrode	Textile electrode	0  1  2  3  4  ⑤
Cleaning and maintenance	Device machine washable?	0  1  2  3  ④  5
Sampling rate	Above 64 hz?	0  1  2  3  4  ⑤
Total Score	Parameter score = 88