Administrative and Claims Data Help Predict Patient Mortality in Intensive Care Units by Logistic Regression: A Nationwide Database Study
Table 2
Characteristics of 1608 adult ICU patients stratified by inhospital mortality.
Characteristic
Inhospital mortality
value
No
Yes
Sex
0.2993
Female
534 (39.58)
112 (43.24)
Male
815 (60.42)
147 (56.76)
Age (years)
<0.0001
≤44
198 (14.68)
16 (6.18)
45–64
359 (26.61)
34 (13.13)
65–84
639 (47.37)
138 (53.28)
≥85
153 (11.34)
71 (27.41)
Department
0.0015
Internal medicine
839 (62.19)
188 (72.59)
Surgical
510 (37.81)
71 (27.41)
Operation
0.0633
No
987 (73.17)
204 (78.76)
Yes
362 (26.83)
55 (21.24)
Hemodialysis
0.5204
No
1250 (92.66)
237 (91.51)
Yes
99 (7.34)
22 (8.49)
Mechanical ventilation
<0.0001
No
872 (64.64)
63 (24.32)
Yes
477 (35.36)
196 (75.68)
ICU length of stay (days)
0.0716
1–7
1179 (87.40)
215 (83.01)
>7
170 (12.60)
44 (16.99)
Length of mechanical ventilation (days)
<0.0001
0
872 (64.64)
63 (24.32)
1–7
319 (23.65)
152 (58.69)
>7
158 (11.71)
44 (16.99)
Number of outpatient visits
0.0892
0–15
385 (28.54)
57 (22.01)
15–30
320 (23.72)
64 (24.71)
>31
644 (47.74)
138 (53.28)
Number of inpatient visits
0.0002
1
737 (54.63)
108 (41.70)
2
289 (21.42)
61 (23.55)
>3
323 (23.94)
90 (34.75)
CCI
<0.0001
0
233 (17.27)
24 (9.27)
1
282 (20.90)
33 (12.74)
2
278 (20.61)
61 (23.55)
≥3
556 (41.22)
141 (54.44)
ECI
0.048
0
178 (13.19)
28 (10.81)
1
182 (13.49)
24 (9.27)
2
221 (16.38)
36 (13.90)
3
768 (56.93)
171 (66.02)
APACHE II score
<0.0001
0–14
773 (57.30)
40 (15.44)
15–25
460 (34.10)
128 (49.42)
≥26
116 (8.60)
91 (35.14)
Data are expressed as (%) or deviation. <0.05; <0.01; <0.001. Abbreviations: ICU: intensive care unit; APACHE II: Acute Physiology and Chronic Health Evaluation II; CCI: Charlson Comorbidity Index.
