. Author manuscript; available in PMC: 2021 May 1.

Published in final edited form as: Am J Emerg Med. 2019 Jul 15;38(5):925–928. doi: 10.1016/j.ajem.2019.07.020

TABLE 2.

Distribution of oxygen saturation and measured differences by instrument

Measure	Measurement Instrument
Measure	Control	Ox	Pox	iOx
Total Patients (N)	191	191	191	191
Oxygen Saturation (%)
Mean (SD)	96.0 (3.2)	98.2 (2.0)	97.2 (1.2)	94.7 (4.5)
Median (25^th , 75^th Percentile)	97 (94, 99)	99 (97, 100)	97.2 (96.2, 98.1)	95 (93, 98)
Minimum , Maximum	80, 100	94, 100	95, 100	75, 100
Hypoxia (<=94%) (N / %)	68 (35.6%)	18 (9.4%)	0 (0%)	69 (36.1%)
Difference (Measured Oxygen Saturation - Control) (%)
Mean (SD)	---	2.19 (3.78)	1.14 (3.33)	−1.35 (3.56)
Median (25^th , 75^th Percentile)	---	2 (0, 5)	0.8 (−1.4, 3.1)	−1 (−2, 0)
Minimum , Maximum	---	−6, 14	−4.9, 15.3	−19, 7