Table 2.
Clinical Characteristics of Survivors Vs Nonsurvivors in Direct and Indirect ARDS
| Characteristic | Direct ARDS (n = 250) |
P Valuea | Indirect ARDS (n = 167) |
P Valueb | ||
|---|---|---|---|---|---|---|
| Survivors (n = 180) | Nonsurvivors (n = 70) | Survivors (n = 115) | Nonsurvivors (n = 52) | |||
| Age, y | 55 (43-65) | 58 (48-72) | .04 | 55 (46-67) | 56 (43-65) | .57 |
| Male | 87 (48) | 35 (50) | .81 | 62 (54) | 32 (62) | .36 |
| White race | 154 (86) | 66 (94) | .06 | 98 (85) | 49 (94) | .10 |
| Weight, kg | 75 (64-97) | 73 (59-83) | .10 | 77 (68-95) | 81 (65-98) | .88 |
| BMI, kg/m2 | 26 (23-32) | 25 (22-28) | .03 | 26 (23-31) | 26 (22-33) | .79 |
| Current smoker | 63 (35) | 20 (29) | .33 | 39 (34) | 15 (29) | .52 |
| Alcohol abuse | 26 (14) | 11 (16) | .80 | 24 (21) | 10 (19) | .81 |
| Chronic liver disease | 7 (4) | 11 (16) | .001 | 9 (8) | 13 (25) | .002 |
| Chronic renal disease | 32 (18) | 8 (11) | .22 | 16 (14) | 13 (25) | .08 |
| Congestive heart failure | 19 (11) | 10 (14) | .41 | 7 (6) | 8 (15) | .05 |
| MI/angina | 18 (10) | 7 (10) | .99 | 7 (6) | 3 (6) | .94 |
| Diabetes mellitus | 60 (33) | 14 (20) | .04 | 30 (26) | 18 (35) | .26 |
| Type 2 diabetes mellitus | 58 (32) | 13 (19) | .03 | 30 (26) | 17 (33) | .38 |
| SAPS II | 50 (36-61) | 61 (41-77) | .002 | 63 (49-74) | 61 (47-76) | .75 |
| APACHE II | 26 (20-33) | 31 (22-36) | .01 | 30 (25-37) | 31 (25-36) | .83 |
| Lung injury score | 3.0 (2.5-3.5) | 3.0 (2.8-3.5) | .04 | 2.7 (2.3-3.0) | 2.9 (2.3-3.3) | .64 |
| Pao2/Fio2 | 114 (82-192) | 116 (77-166) | .53 | 158 (109-215) | 156 (104-238) | .80 |
| Shock | 110 (61) | 47 (67) | .38 | 95 (83) | 42 (81) | .77 |
| No. of organ failures | 1 (0.3-1) | 1 (1-2) | < .001 | 2 (1-2) | 2 (2-3) | < .001 |
Continuous variables are presented as median (interquartile range) and compared by using the Mann-Whitney U test. Categorical data are presented as No. (%) and compared by using Pearson χ2 test. Number of organ failures includes only nonpulmonary organ failures. See Table 1 legend for expansion of abbreviations.
a
Comparison between survivors and nonsurvivors in direct ARDS.
b
Comparison between survivors and nonsurvivors in indirect ARDS.