Point-of-Care Diagnostic Device for Traumatic Pneumothorax: Low Sensitivity of the Unblinded PneumoScan™

Table 5

Potential biases of PneumoScan-readings. All parameters are presented in relative and absolute values, or as median with 25th/75th percentile. BMI: Body Mass Index; ISS: Injury Severity Score; AIS: Abbreviated Injury Scale. The significant value was calculated with Mann–Whitney Test. Chi-Squared-Test.

Parameter	Correct reading ()	False reading ()
Sex m/f	70.4%/29.6% (38/16)	69.2%/30.8% (18/8)	.917
BMI kg/m^2	25.8 (23.6/28.8)	26.4 (23.2/30.4)	.700
ISS	12.0 (9.0/22.0)	17.0 (12.0/30.3)	.030
AIS-Thorax	2.0 (1.0/2.0)	2.0 (2.0/3.0)	.016
Prehospital intubation	14.8% (8)	11.5% (3)	.690
Haematothorax	1.8% (1)	11.5% (3)	.076
Contusion	13% (7)	15.4% (4)	.646
Emphysema	1.8% (1)	7.7% (2)	.298
Metastasis	0	3.8% (1)	.147
Pleural effusion	1.8% (1)	3.8% (1)	.277
Mediastinal shift	0	11.5% (3)	.039
Rib fracture	18.5% (10)	38.5% (10)	.155
Pericardial effusion	1.8% (1)	3.8% (1)	.593