Patient characteristics at enrolment
| Back (N=41) | Left side (N=46) | p Value | |
|---|---|---|---|
| Gestational age (weeks)* | 28 (3) | 28 (2) | 0.803 |
| Birth weight (g)* | 1121 (368) | 1146 (397) | 0.762 |
| Infant of multiple birth† | 15 (37) | 23 (50) | 0.384 |
| Male† | 23 (56) | 22 (48) | 0.441 |
| Caesarean delivery† | 25 (61) | 31 (67) | 0.666 |
| Antenatal steroid exposure† | 38 (93) | 45 (98) | 0.467 |
| Maternal age* | 32 (6) | 33 (6) | 0.626 |
| Multiple birth† | 26 (63) | 23 (50) | 0.17 |
| Masimo monitor | 38 (93) | 41 (89) | 0.615 |
*Mean (SD), compared with independent-samples t test.
†n (%), compared with Fisher's exact test.