Epidemiology and risk factors for nosocomial infection in the respiratory intensive care unit of a teaching hospital in China: A prospective surveillance during 2013 and 2015

Table 1 The characteristics of 1347 patients admitted to the RICU

Parameter	Overall (n = 1347)		Incidence of nosocomial infection
Parameter	No	% /\( \overline {\mathrm{X}} \)± s	No	%	χ²	p- value
Age, years		58.6 ± 17.1
Gender
Male	893	66.3	67	7.50	0.016	0.9
Female	454	33.7	35	7.71	0.016	0.9
Admission diagnosis
COPD	524	38.90	31	5.92	8.438	0.038
Pneumonia	552	40.98	43	7.79
Lung cancer	156	11.58	21	13.46
Others	115	8.54	7	6.09
ASIS class
A	221	16.41	9	4.07	49.42	< 0.001
B	575	42.69	27	4.7
C	455	33.78	45	9.89
D	73	5.42	13	17.81
E	23	1.71	8	34.78
Years
2013	431	32.00	31	7.19	0.213	0.795
2014	450	33.41	35	7.78
2015	466	34.60	36	7.73
RICU stay, days
<10	775	57.54	19	2.45	134.998	0.000
10~30	445	33.04	33	7.42
30~60	72	5.35	21	29.2
≥ 60	55	4.08	29	52.7

ISSN: 1471-2334