Table 5.

Regression coefficients, P values comparing decay rates of efficacy tests with stability in air, and times required to achieve 3 log₁₀ reductions

Device	Slope			Intercept			P value			≥3 log10 reduction (min)
	S aureus	K pneumoniae	A baumannii	S aureus	K pneumoniae	A baumannii	S aureus	K pneumoniae	A baumannii	S aureus	K pneumoniae	A baumannii
Stability in air	−0.0064	−0.0244	−0.0037	4.6471	4.4657	4.8829	NA	NA	NA	NA	NA	NA
Efficacy test device 1	−0.0752	−0.099	−0.079	4.6977	4.6871	4.7821	3.82 × 10−10	2.93 × 10−5	NA	45	45	38
Efficacy test device 2	−0.0766	−0.0983	ND	4.8243	4.5763	ND	1.39 × 10−9	2.00 × 10−4	NA	45	45	ND
Efficacy test device 3	−0.0224	−0.0369	ND	4.9301	4.4449	ND	2.13 × 10−10	2.93 × 10−5	NA	215	215	ND

A baumannii, Acinetobacter baumannii; K pneumoniae, Klebsiella pneumoniae; NA, not applicable; ND, not done; S aureus, Staphylococcus aureus.