The Effect of Hemoglobin Levels on Mortality in Pediatric Patients with Severe Traumatic Brain Injury
Table 2
Statistical outputs of initial exploratory logistic regression model with seven covariates (a) and final reduced covariate (b) logistic regression model to predict the probability of mortality.
(a)
Variables
Standard error
value
Odds ratio
95% CI odds ratio (lower-upper)
NAT suspected
2.434
0.989
0.014
11.40
1.64–79.25
PRISM III score
0.222
0.072
<0.005
1.25
1.08–1.44
Age
0.039
0.094
0.679
1.04
0.87–1.25
Admission GCS
−0.303
0.226
0.179
0.74
0.47–1.15
Initial Hgb
−0.057
0.042
0.174
0.95
0.87–1.03
RBC transfusion
−5.688
5.366
0.289
0.00
0.00–125.17
Initial Hgb RBC transfusion
0.046
0.045
0.302
1.05
0.96–1.14
Constant
3.094
5.468
0.572
22.06
= 0.586; = 51.1.
(b)
Variables
Standard error
value
Odds ratio
95% CI odds ratio (lower-upper)
NAT suspected
2.198
0.730
<0.005
9.011
2.155–37.684
PRISM III score
0.276
0.060
<0.005
1.317
1.171–1.482
Constant
−5.294
0.937
<0.005
0.005
= 0.552; = 47.4. NAT: nonaccidental trauma; GCS: Glasgow Coma Scale; Hgb: hemoglobin; RBC: red blood cell.
