Table 5. Colonisation of patients with MRSA or P. aeruginosa within portions of cycles.

	MRSA						P. aeruginosa
	FEP			APP-β			FEP			APP-β
Portion of cycle	n/tested	rate	p	n/tested	rate	p	n/tested	rate	p	n/tested	rate	p
First Half	21/68	0.31	0.076	24/70	0.34	0.211	15/68	0.22	0.006	32/70	0.46	0.018
Second Half	31/66	0.47		20/82	0.24		30/66	0.45		22/82	0.27
First third	16/50	0.32		21/47	0.45		14/50	0.28		23/47	0.49
Second Third	17/42	0.4	0.192	12/56	0.21	0.018	14/42	0.33	0.21	18/56	0.32	0.023
Last Third	19/42	0.45		11/49	0.22		17/42	0.4		13/49	0.27

p-values indicate significance between portions of cycles for each organism, by Chi-Squared analysis. FEP, cefepime; APP-β, antipseudomonal penicillin/β-lactamase inhibitor combinations. Rate: proportion of patients positive.