Table 2.

Sensitivity and specificity of the MoMba Live Long system carbon monoxide (CO) measure with the piCO⁺ measure as gold standard, and MoMba Live Long system CO and piCO⁺ measures with cotinine in urine as gold standard.

Smoking status test		Sensitivity (95% CI)	Specificity (95% CI)	r	P value
piCO+ as gold standard
	MoMba CO estimate (n=143)	0.91 (0.80-1.0)	0.94 (0.83-1.0)	.94	<.001
Cotinine in urine as gold standard
	MoMba CO estimate (n=139)	0.81 (0.65-0.97)	1.0 (1.0-1.0)	.52	.01
	piCO+ (n=139)	0.87 (0.73-1.0)	1.0 (1.0-1.0)	.57	.02