Table 1 Study population characteristics.
From: A trial comparing continuous positive airway pressure (CPAP) devices in preterm infants
Maternal characteristics | Seattle-PAP (n = 103) | FP-CPAP (n = 105) |
|---|---|---|
Primigravida—no. (%) | 34 (33.0) | 40 (38.1) |
Age—years | 28.8 ± 6.2 | 28.3 ± 6.0 |
Race or ethnicitya—no. (%) | ||
Caucasian | 71 (68.9) | 78 (74.3) |
Black or African American | 28 (27.2) | 16 (15.2) |
Hispanic | 0 (0) | 5 (4.8) |
Asian or Pacific Islander | 2 (1.9) | 0 (0) |
Multiracial | 9 (8.7) | 5 (4.8) |
Other | 2 (1.9) | 2 (1.9) |
Unknown | 0 (0) | 1 (1.0) |
Maternal marital status—no. (%)b | ||
Single | 50 (48.5) | 53 (50.5) |
Married | 53 (51.5) | 50 (47.6) |
Mother in pre-term labor—no. (%) | 62 (60.2) | 63 (60.0) |
Rupture of membranes—no. (%) | 38 (36.9) | 44 (41.9) |
Period prior to delivery (hours)c | 120 (0–1224) | 71 (0–1056) |
Diagnosis of chorioamnionitisd—no. (%) | 25 (24.3) | 25 (23.8) |
Antenatal glucocorticoids received—no. (%) | 93 (90.3) | 101 (96.2) |
Number of doses of antenatal corticosteroids | 2 (1–4) | 2 (1–4) |
Delivery method—no. (% of infants) | ||
Vaginal | 32 (28.6) | 42 (35.0) |
Cesarean section | 80 (71.4) | 78 (65.0) |
Infant Characteristics | Seattle-PAP (n = 112) | FP-CPAP (n = 120) |
|---|---|---|
Gestational age (weeks) | 27.0 ± 1.8 | 27.2 ± 1.7 |
<27 wk—no. (%) | 36 (32.1) | 39 (32.5) |
27–<30 wk—no. (%) | 76 (67.9) | 81 (67.5) |
Birth weight (grams) | 990 ± 253 | 1020 ± 254 |
Male sex (%)—no. (%) | 70 (62.5) | 59 (49.2) |
Multiple gestation (%)—no. (%) | 25 (22.3) | 34 (28.3) |
Intubated in the delivery room—no. (%) | 49 (43.8) | 44 (36.7) |
Surfactant treatment—no. (%) | ||
In the delivery room | 31 (27.7) | 38 (31.7) |
At any time | 74 (66.1) | 73 (60.8) |
Apgar scores at five minutes, median (IQR)e | 7 (5–8) | 7 (6–8) |
Postnatal age at randomization, median (IQR)—hours | 8 (0–17.8) | 10 (0–20.0) |
Fraction of inspired oxygen at randomization, median (IQR) | 25.0 (21–30) | 24.5 (21–30) |
Age at randomization, median (range)—hours | 8 (0–60) | 10 (0–70) |
Caffeine received in first 24 h of life—no. (%) | 111 (99.1) | 119 (99.2) |
