Table 2.

Primary diagnostic category of the intensive care unit (ICU) population

	No. (%) of patients
Category	total (n = 242)	study sample (n = 116)	died or lost to follow-up (n = 126)
Major surgery*	64 (26.5)	42 (36.2)	22 (17.5)
Heart failure	24 (9.9)	9 (7.8)	15 (11.9)
Respiratory failure	14 (5.8)	5 (4.3)	9 (7.1)
Trauma†	51 (21.0)	33 (28.5)	18 (14.3)
Head trauma	20 (8.3)	6 (5.2)	14 (11.1)
Sepsis	22 (9.1)	3 (2.6)	19 (15.1)
Stroke	26 (10.7)	5 (4.3)	21 (16. 7)
Miscellaneous‡	21 (8.7)	13 (11.2)	8 (6.4)

*Abdominal, chest, or orthopedic surgery (no cardiac).

†Trauma in regions other than the head.

‡Acute renal failure, pulmonary embolism, drug overuse, status epilepticus, and acute necrotizing pancreatitis.