|
Predominant category during the first hour of admission, N (%)a
|
Cases
(N = 24)b
|
Controls (N = 100)c
|
P-valuef
|
| | | |
0.20
|
|
Category 1
|
14 (58.3%)
|
71 (71.0%)
| |
|
Category 1 or 2
|
2 (8.3%)
|
6 (5.8%)
| |
|
Category 2
|
7 (29.2%)
|
2 (23.1%)
| |
|
Category 2 or 3
|
1 (4.2%)
|
0
| |
|
Category 3
|
0
|
0
| |
|
Predominant category during the last hour prior to delivery, N (%)a
|
Cases
(N = 25)d
|
Controls
(N = 101)e
|
P-valuef
|
| | | |
0.02
|
|
Category 1
|
1 (4.0%)
|
8 (7.9%)
| |
|
Category 1 or 2
|
1 (4.0%)
|
11 (10.9%)
| |
|
Category 2
|
20 (80.0%)
|
82 (81.2%)
| |
|
Category 2 or 3
|
2 (8.0%)
|
0
| |
|
Category 3
|
1 (4.0%)
|
0
| |
-
Abbreviation: FHR fetal heart rate tracings
-
aFor each patient the predominant category was defined as the most common rating among the four 15-min segments from the FHR tracings using the consensus ratings
-
bOf the 26 HIE cases, 24 had FHR tracings available during the first hour after admission (20 had 4 interpretable segments, 3 had 3 interpretable segments, and 1 had 1 interpretable segment)
-
cOf the 104 controls, 100 had FHR tracings available during the first hour after admission (80 had 4 interpretable segments, 11 had 3 interpretable segments, 5 had 2 interpretable segments, and 4 had 1 interpretable segment)
-
dOf the 26 HIE cases, 25 had FHR tracings available during the last hour prior to delivery (23 had 4 interpretable segments, 1 had 3 interpretable segments, and 1 had 1 interpretable segment)
-
eOf the 104 controls, 101 had FHR tracings available during the last hour prior to delivery (85 had 4 interpretable segments, 9 had 3 interpretable segments, 4 had 2 interpretable segments, and 3 had 1 interpretable segment)
-
f
P-value based on the Wilcoxon rank-sum test taking into account the ordinal nature of the predominant category
