Skip to main content

Table 1 Patient characteristics

From: Intensivists' base specialty of training is associated with variations in mortality and practice patterns

  Entire cohort of patients Patients cared for by a single Intensivist during ICU stay
  Overall
(n = 9808)
Internal Medicine
(n = 4146)
Pulmonary
(n = 3906)
AGSEM
(n = 1756)
p value* Overall
(n = 4612)
Internal Medicine
(n = 1944)
Pulmonary
(n = 1844)
AGSEM
(n = 824)
p value*
Mean age in years (± SD) 56.8 (18.8) 56.0
(18.9)
58.4
(18.2)
55.2
(19.7)
<0.001 57.1 (19.2) 56.6 (19.4) 58.2
(18.6)
55.7 (19.9) <0.01
Male (%) 57.8 58.0 56.8 59.9 NS 56.0 55.5 56.0 57.0 NS
Mean admission APACHE II (± SD) 23.2
(9.1)
23.1
(8.9)
23.4
(9.3)
22.7
(8.9)
< 0.05 22.2 (9.4) 22.5
(9.3)
21.9
(9.4)
21.8 (9.3) NS
Mean admission TISS (± SD) 35.7 (13.3) 36.3
(13.4)
34.5
(13.1)
36.7
(13.3)
<0.001 33.1 (13.3) 33.7 (13.5) 31.7
(12.8)
34.4 (13.5) <0.001
Admitting diagnosis (% of total
admissions within each group)
          
   Pulmonary 30.7 30.3 32.4 28.3 <0.01 28.5 28.6 29.4 26.8 <0.01
   Cardiovascular 23.4 21.0 27.3 20.3 <0.001 24.3 21.9 28.0 22.1 <0.001
   Neurologic 13.6 16.7 10.2 13.9 <0.001 13.6 16.3 10.2 15.0 <0.01
   Gastrointestinal 10.7 10.2 11.0 10.7 NS 11.3 11.5 11.4 10.6 NS
   Trauma 9.2 10.2 5.4 15.2 <0.001 6.5 7.4 3.9 10.3 <0.001
   Poisoning 5.6 4.6 6.5 6.1 <0.01 7.7 6.6 8.5 8.7 <0.01
   Other 6.8 6.9 7.2 5.5 <0.01 8.0 7.7 8.6 6.6 NS
Admit level of care (% DNR) 9.5 9.4 9.8 9.1 NS 11.8 12.4 11.2 11.9 NS
Discharge level of care (% DNR) 22.3 22.7 22.4 21.2 NS 21.4 23.6 19.4 20.5 <0.01
ICU occupancy at admission (%) 84.0 83.3 84.3 85.1 <0.001 83.6 83.1 83.5 84.8 <0.05
  1. AGSEM = Intensivists with base specialty training in Anesthesia, General Surgery or Emergency Medicine; APACHE = Acute Physiology and Chronic Health Evaluation Score; DNR = Do Not Resuscitate; ICU = Intensive Care Unit; n/a = not applicable; SD = Standard Deviation; TISS = Therapeutic Intervention Scoring System
  2. * Reflects comparisons between the three specialty groups