Biology Reference
In-Depth Information
Experimental
Group:
Episodes of Sepsis
and SIRS
Control
Group:
No Episodes
Group
Comparison
(t-test)
Infants
50
50
Mean BW
in grams (SD)
1227 (847)
1228 (760)
t
¼
0.01,
p
>
0.99
Mean GA in days
(SD)
198 (34)
196 (26)
t
¼
0.37,
p
¼
0.72
TABLE 6-1.
Study population.
Abbreviations: BW, birth weight; GA, gestational age; SD, standard deviation.
2. Results
Table 6-2(A) shows results for SA values for experimental-group infants
in 24-hour blocks beginning 5 days before sepsis. Column 2 of this table
contains the average SA values for each of the 24-hour blocks
for the experimental group. Columns 3 and 4 of the table present
Mean Sample
Asymmetry
(SD)
ln(R 1 )
(accelerations)
ln(R 2 )
(decelerations)
A: Changes Before Sepsis for the Experimental Group
5 Days before sepsis
3.28 (1.59)
4.40 (0.94)
4.41 (0.77)
4 Days before sepsis
3.59 (1.63)
4.36 (0.92)
4.45 (0.76)
3 Days before sepsis
3.50 (1.94)
4.27 (0.92)
4.39 (0.80)
2 Days before sepsis
3.66 (2.12)
4.19 (0.85)
4.37 (0.71)
1 Day prior to sepsis
4.20 (2.32)
4.10 (0.87)
4.28 (0.65)
Contrast 1: 5 days
versus 1 day before
sepsis
F
¼
5.5,
F
¼
5.8,
F
¼
1.9,
p
¼
0.02
p
¼
0.02
p
¼
0.2
B: Values in Health
Infants Posttreatment
3.28 (1.34)
4.60 (0.87)
4.65 (0.74)
Contrast 2: 5 days
before sepsis versus
posttreatment
F
¼
0.01,
F
¼
2.1,
F
¼
4.2,
p
>
0.99
p
¼
0.2
p
¼
0.05
Control Infants
2.90 (0.93)
4.75 (0.67)
4.67 (0.62)
Sepsis versus control—
ANOVA with
covariates BW and
GA
F
¼
2.40,
F
¼
0.35,
F
¼
0.01,
p
¼
0.13
p
¼
0.6
p
>
0.99
TABLE 6-2.
Sample asymmetry of heart rate and asymmetries caused by accelerations and decelerations before
neonatal sepsis and SIRS, and in good health.
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