Obesity and Overweight Are Independently Associated with Greater Survival in Critically Ill Diabetic Patients: A Retrospective Cohort Study
Table 1
Baseline characteristics of the study patients by BMI category.
Characteristics
Overall ()
Normal weight ()
Overweight ()
Obesity ()
value
BMI (kg/m2)
a
a
<0.001
Age (years)
a
a
<0.001
Gender, male, (%)
3680 (60.2)
800 (60.8)
1260 (65.5) c
1620 (56.5) c
<0.001
Ethnicity, (%)
<0.001
White
4134 (67.7)
848 (64.4)
1308 (68.0)
1833 (69.0)b
0.014
Black
618 (10.1)
136 (10.3)
167 (8.7)
280 (11.0)
0.033
Other
507 (8.3)
145 (11.0)
168 (8.7)
188 (6.8)a
<0.001
Unknown
849 (13.9)
187 (14.2)
281 (14.6)
352 (13.3)
0.404
Admission type, (%)
<0.001
Emergency
4783 (78.3)
1085 (82.4)
1487 (77.3)a
2211 (77.1)a
<0.001
Elective
1131 (18.5)
190 (14.4)
365 (19.0)b
576 (20.1)a
<0.001
Urgent
194 (3.1)
41 (3.1)
72 (3.7)
81 (2.8)
0.204
ICU type, (%)
<0.001
MICU
1810 (29.6)
420 (31.9)
497 (25.8) a
893 (31.1)
<0.001
CCU
1173 (19.2)
252 (19.1)
399 (20.7)
522 (18.2)
0.092
CSRU
1997 (32.7)
378 (28.7)
682 (35.4)a
937 (32.7)c
<0.001
SICU
734 (12.0)
180 (13.7)
221 (11.5)
333 (11.6)
0.111
TSICU
394 (6.5)
86 (6.5)
125 (6.5)
183 (6.4)
0.977
DM, T2DM, (%)
5620 (92.0)
1149 (87.3)
1756 (91.3)a
2715 (94.7)a
<0.001
Scoring systems
SOFA
4.0 (3.0, 6.0)
4.0 (3.0, 6.0)
4.0 (3.0, 6.0)
4.0 (3.0, 6.0)
0.752
APS III
43.0 (33.0, 57.0)
45.0 (35.0, 60.0)
42.0 (32.0, 55.5)a
41.0 (32.0, 56.0)a
<0.001
Comorbidity, (%)
AMI
1208 (19.8)
274 (20.8)
432 (22.5)
502 (17.5)c
<0.001
Stroke
162 (2.7)
46 (3.5)
38 (2.0)c
78 (2.7)
0.029
Renal failure
2075 (34.0)
442 (33.6)
628 (32.6)
1005 (35.0)
0.215
Respiratory failure
1120 (18.3)
246 (18.7)
294 (15.3)c
580 (20.2)
<0.001
Heart failure
2370 (38.8)
495 (37.6)
735 (38.2)
1140 (39.7)
0.340
Malignancy
183 (3.0)
55 (4.2)
64 (3.3)
64 (2.2)a
0.002
Abbreviations: BMI: body mass index; ICU: intensive care unit; MICU: medical intensive care unit; CCU: coronary care unit; CSRU: cardiac surgery recovery unit; SICU: surgical intensive care unit; TSICU: thoracic surgery intensive care unit; DM: diabetic mellitus; SOFA: sequential organ failure assessment; APS III: acute physiology score III; AMI: acute myocardial infarction. Normally distributed data are presented as , nonnormally distributed data are presented as median (IQR), and categorical variables are presented as (%). Scores were calculated within 24 h of ICU admission. a compared with the normal weight group. b compared with the normal weight group. c compared with the normal weight group.
