Table 3.

Relationship of outcome to various characteristics

Variable		Outcome				p -value*
		Non-survivors (n=131)		Survivors (n=162)
Age (months)	Mean ± SD	28.0±35.2		26.5±33.8		0.3
	Median	8.0		9.0
Age groups n (%)	< 1 year	71	54.2	82	50.6	0.6
	1 – 6 years	44	33.6	63	38.9	0.4
	> 6 years	16	12.2	17	10.5	0.7
Sex n (%)	Male	69	52.7	93	57.4	0.5
	Female	62	47.3	69	42.6
PRISM III on admission	Mean ± SD	23.7±11.6		8.2±3.9		<0.001
	Median	20.0		8.0
Cause n (%)	Medical	118	90.1	151	93.2	0.4
	Surgical	13	9.9	11	6.8
Reason for admission n, %	Neurological	40	30.5	61	37.7	0.2
	Respiratory	19	14.5	46	28.4	0.005
	Cardiac	33	25.2	21	13.0	0.010
	Sepsis	24	18.3	10	6.2	0.002
	Neuromuscular disease	4	3.1	12	7.4	0.1
	Renal	4	3.1	2	1.2	0.4
	Post-operative	0	0.0	2	1.2	0.5
	Others	7	5.3	8	4.9	1.0
Reason for initiation of ventilation n, %	Neurologic	47	35.9	67	41.4	0.4
	Respiratory failure	19	14.5	52	32.1	0.001
	Cardiovascular failure	37	28.2	21	13.0	0.002
	Sepsis	24	18.3	10	6.2	0.002
	Neuromuscular	4	3.1	12	7.4	0.1
FIO2/PaO2 n (%)	< 200	59	45.0	51	31.5	0.02
	200–300	38	29.0	78	48.1	0.001
	> 300	34	26.0	33	20.4	0.3
ARDS n, %	Yes	19	14.5	7	4.3	0.003
	No	112	85.5	155	95.7
Airways n, %	Endotracheal tube	131	100.0	158	97.5	0.1
	Tracheostomy	0	0.0	4	2.5
Mechanical ventilation duration n, %	Mean ± SD	8.5±6.9		17.5±19.5		<0.001
	Median	7.0		10.0
Complications n, %	Yes	64	48.9	53	32.7	0.006
	No	67	51.1	109	67.3
VAP† (%)	Yes	47	35.9	33	20.4	0.004
	No	84	64.1	129	79.6
Pneumothorax n, %	Yes	19	14.5	12	7.4	0.06
	No	112	85.5	150	92.6
Atelectasis n, %	Yes	3	2.3	10	6.2	0.2
	No	128	97.7	152	93.8
PES‡ n, %	Yes	3	2.3	4	2.5	1.0
	No	128	97.7	158	97.5
MODS§ n, %	Yes	98	74.8	23	14.2	<0.001
	No	33	25.2	139	85.8

^*p value less than 0.05 is significant,

^†VAP: ventilator-associated pneumonia,

^‡PES: post extubation stridor,

^§MODS: multiple organ dysfunction syndrome