TABLE 4.

Viability rates (percent decreases) of β-lactamase-negative S. aureus at the different incubation times

Incubation period (h)	Mean viability rate (%) ± SD
	Control	Vancomycin	Amoxicillin	Co-amoxiclav
0–0.5	−273 ± 22.59	82.99 ± 2.71	64.18 ± 2.71	52.24 ± 26.84
0.5–2	−1,726 ± 107.9	97.18 ± 0.45	96.57 ± 0.27	93.85 ± 3.13
2–3	−2,286 ± 117.3	97.80 ± 0.29	98.47 ± 1.51	98.72 ± 0.34
3–6	−13,000 ± 1,098	99.66 ± 0.08	99.78 ± 0.07	99.78 ± 0.06
6–8	−13,000 ± 1,439	99.98 ± 0.00	99.98 ± 0.02	99.94 ± 0.02