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. 2013 Sep 24;3:33. doi: 10.1186/2110-5820-3-33

Table 5.

Baseline characteristics of the nonsepsis, nontrauma cohort

Characteristic
ALI/ARDS
No ALI/ARDS
p value
  (n = 13) (n = 112)  
Age (yr)
56 (48, 59)
61 (49.8, 68)
0.191a
Female gender
69.2% (9)
43.8% (49)
0.081b
Current smoker
30.8% (4)
24.3% (27)
0.612b
ICU days
6 (3, 8)
5 (3, 9)
0.827a
Ventilator-free days
24 (16, 26)
26 (23, 27)
0.094a
Hospital days
16 (11, 21)
11 (7, 20.3)
0.337a
Baseline APACHE II score
26 (24, 29)
26 (22, 31)
0.711a
Blood median storage days
20 (17, 29)
22 (16, 29)
1a
Blood maximum storage days
26 (19, 35)
26.5 (20, 33)
0.907a
Number of units transfused 4 (2, 5) 4 (2, 8) 0.88a

Data given as median (25th percentile, 75th percentile) or percent (frequency) of patients.

N is the number of nonmissing values.

aWilcoxon test; bPearson test.