Table 4.
EFM characteristics in the 30 minutes prior to delivery – No maternal fever
| Respiratory Morbidity (n=146) |
No Respiratory Morbidity (n=4501) |
Relative Risk (95% CI) |
Adjusted OR1 (95% CI) |
|
|---|---|---|---|---|
| Ever2 baseline tachycardia >160 bpm | 21.6% | 7.2% | 3.3 (2.2–5.0) | 2.9 (1.9–4.6) |
| Always2 moderate variability | 35.9% | 43.7% | 0.7 (0.5–1.0) | 0.7 (0.5–1.0) |
| Ever2 marked variability | 10.3% | 3.2% | 3.3 (1.9–5.7) | 3.1 (1.7–5.7) |
| Accelerations present | 23.2% | 33.7% | 0.6 (0.4–0.9) | 0.6 (0.4–0.9) |
| Prolonged decelerations | 48.2% | 33.8% | 1.8 (1.3–2.5) | 1.8 (1.3–2.5) |
IQ interquartile range
1
Adjusted for fever, parity, pregestational DM, prior c-section, preeclampsia
2
"Always" was defined as presence of the characteristic during the entire 30-minute period before delivery. "Ever" refers to the presence of the EFM characteristic during any 10-minute segment in the 30-minute period before delivery.