Table 1.

Summary of baseline characteristics of all patients in the cohort

	Ad hoc dose N=119	Titrated dose N=153	P Value
Males	85 (71%)	90 (59%)	0.031*
Age (years)¥	25 (20-35)	26 (22-38)	0.025*
Anti-cholinesterase pesticide OPs
Chlorpyrifos	93 (78%)	56 (37%)	<0.0001*
Dimethioate	3 (3%)	28 (18%)	<0.0001*
Other Ops£	18 (15%)	38 (25%)	0.04*
Carbamate	5 (4%)	13 (8%)	N/S
unknown anti-cholinesterase pesticide	0 (0%)	18 (12%)	<0.0001*
Amount poison ingestion (ml.)¥	27 (10-80)	50 (25-100)	0.002*
Post ingestion time on admission (hrs)¥	4 (2-9)	4 (3-7)	N/S
Direct admission	89 (75%)	24 (16%)	<0.0001*
Atropine given before admission	20 (17%)	66 (43%)	<0.0001*
Alcohol ingestion	34 (29%)	29 (19%)	N/S
GCS <15	71 (60%)	110 (72%)	<0.033*
GCS 9-14	35 (29%)	20 (13%)	<0.0009*
GCS ≤ 9	36 (30%)	90 (59%)	<0.002*
Co-morbid illness€	15 (13%)	22 (14%)	N/S
Pulmonary signs (crepitations)	25 (21%)	55 (36%)	0.007*
Ventilated at baseline	1 (1%)	9 (6%)	0.002*
Pralidoxime administered	48 (40%)	32 (21%)	0.0005*

Data are number (%) unless otherwise indicated.

^¥Median (IQR).

Others: Diazinon, Phenthoate, Acephate, Profenofos, Fenthion, unknown Ops

^£Co-morbid illness included cardiac, pulmonary, psychiatric, neurologic and undiagnosed disorders

^*Results that are significantly different and corresponding P value