Table 3.

Univariate analysis of the influencing factors for the MDRBs infections in the elderly patients with SAP and the infection rates (%) 433

Influencing factrs		Number of investigations	Number of infections	Infection rate	X2	P
Age	60-75	220	58	26.38	6.429	0.114
	>75	213	42	19.66
Gender	Male	228	52	22.75	12.441	0.219
	Female	205	48	23.39
Cause of treatment	Cerebral infarction	214	60	28.00	7.550	0.030
	Cerebral hemorrhage	219	40	18.28
History of diabetes	Yes	206	59	28.29	13.530	0.036
	No	227	41	18.03
History of hypertension	Yes	226	48	21.19	6.587	0.156
	No	207	52	25.08
SAP type	Early onset	229	33	14.39	18.532	0.022
	Late onset	204	67	32.79
Ward type	Ordinary	226	28	12.38	16.580	0.016
	ICU	207	72	34.76
Indwelling gastric tube	Yes	212	68	32.08	8.344	0.025
	No	221	32	14.42
Length of hospital stay	<2	219	39	17.75	11.470	0.027
	>2	214	61	28.43
Antimicrobial preventive applications	Yes	212	76	35.72	15.678	0.010
	No	221	24	10.86
Disturbance of consciousness	Yes	210	70	33.26	9.330	0.016
	No	223	30	13.41