Mean, differences between means (DBM), and standard error of differences between means (SE) of physiological parameters during prone and supine non-REM and REM sleep at 2.5 and 5 months of age
| Sleep parameter | 2.5 months (n=32 pairs) | 5 months (n=28 pairs) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Prone | Supine | DBM | SE | p Value | Prone | Supine | DBM | SE | p Value | ||
| Heart rate (beats/min), non-REM | 125.1 | 118.9 | 6.2 | 1.1 | < 0.001 | 118.8 | 114.1 | 4.3 | 1.0 | < 0.001 | |
| Heart rate (beats/min), REM | 129.1 | 124.4 | 4.7 | 1.2 | 0.001 | 124.2 | 120.1 | 4.1 | 0.8 | < 0.001 | |
| Respiratory rate (breaths/min), non-REM | 28.4 | 27.7 | 0.7 | 0.7 | 0.3 | 25.2 | 24.6 | 0.4 | 0.7 | 0.4 | |
| Respiratory rate (breaths/min), REM | 29.5 | 28.8 | 0.7 | 0.8 | 0.4 | 25.2 | 24.7 | 0.5 | 0.8 | 0.6 | |
| Oxygen saturation (%), non-REM | 99.2 | 99.3 | 0.1 | 0.2 | 0.7 | 99.0 | 98.8 | 0.2 | 0.1 | 0.2 | |
| Oxygen saturation (%), REM | 98.7 | 98.6 | 0.1 | 0.1 | 0.5 | 98.7 | 98.7 | 0.0 | 0.0 | — | |
| Peripheral skin temperature, (°C), non-REM | 36.3 | 36.0 | 0.3 | 0.1 | 0.04 | 36.1 | 35.8 | 0.3 | 0.1 | < 0.01 | |
| Peripheral skin temperature, (°C), REM | 36.3 | 35.9 | 0.4 | 0.1 | < 0.001 | 36.1 | 35.7 | 0.4 | 0.1 | 0.01 | |
Levels of significance between body positions during non-REM and REM sleep according to respective p values.