Epidemiology of mechanically ventilated patients treated in ICU and non-ICU settings in Japan: a retrospective database study

Table 3 Comparison of non-ICU and ICU patients according to three different diagnoses

	Heart failure					Sepsis					Aspiration pneumonia
	Non-ICU		ICU		P	Non-ICU		ICU		P	Non-ICU		ICU		P
Number of patients	2489		2524			506		928			1005		691
Age	76.6		75.9		0.037	74.0		72.9		0.134	79.8		75.5		< 0.001
Male	1341	53.9%	1477	58.5%	0.001	302	59.7%	565	60.9%	0.692	626	62.3%	428	61.9%	0.919
Emergency admission	2119	85.1%	2409	95.4%	< 0.001	445	87.9%	854	92.0%	0.014	904	90.0%	660	95.5%	< 0.001
Hospital stay, days	26.9		26.5		< 0.001	26.5		26.6		0.978	27.8		26.3		0.061
Number of days of ventilation	11.0		8.3		< 0.001	11.6		11.3		0.658	12.3		10.6		0.001
In-hospital deaths	608	24.4%	556	22.0%	0.045	343	67.8%	546	58.8%	0.001	542	53.9%	253	36.6%	< 0.001
Treatments
Arterial line	300	12.1%	1226	48.6%	< 0.001	188	37.2%	721	77.7%	< 0.001	61	6.1%	295	42.7%	< 0.001
Central venous catheter	796	32.0%	1293	51.2%	< 0.001	421	83.2%	852	91.8%	< 0.001	460	45.8%	347	50.2%	0.75
Catecholamines	1115	44.8%	1547	61.3%	< 0.001	431	85.2%	858	92.5%	< 0.001	506	50.3%	370	53.5%	0.199
Renal replacement therapy	162	6.5%	323	12.8%	< 0.001	171	33.8%	436	47.0%	< 0.001	24	2.4%	25	3.6%	0.143
Sedation	715	28.7%	1361	53.9%	< 0.001	350	69.2%	756	81.5%	< 0.001	416	41.4%	446	64.5%	< 0.001
Opioids	207	8.3%	514	20.4%	< 0.001	135	26.7%	394	42.5%	< 0.001	42	4.2%	118	17.1%	< 0.001
Muscle relaxant	96	3.9%	383	15.2%	< 0.001	159	31.4%	380	40.9%	< 0.001	58	5.8%	137	19.8%	< 0.001
Enteral nutrition	244	9.8%	683	27.1%	< 0.001	149	29.4%	534	57.5%	< 0.001	334	33.2%	372	53.8%	< 0.001
Mechanical ventilation without stress ulcer prevention (≥ 3 days)	1785	71.7%	1352	53.6%	< 0.001	233	46.0%	328	35.3%	< 0.001	671	66.8%	364	52.7%	< 0.001

ISSN: 1364-8535