Table 3. Heart rate (beats per minute) and oxygen saturation (%) prior to (Tpre) and during (T0) the painful stimulus, on the first, third and seventh days of life of newborn infants.
| 1st day of life | 3rd day of life | 7th day of life | |
|---|---|---|---|
| Heart rate (bpm) | |||
| Tpre | 134 ± 12 | 134 ± 13 | 137 ± 10 |
| T0 | 136 ± 15 | 141 ± 12 | 146 ± 7 |
| O2 saturation (%) | |||
| Tpre | 96 ± 3 | 96 ± 4 | 95 ± 2 |
| T0 | 94 ± 5 | 94 ± 2 | 93 ± 2 |
Repeated-measurement analysis of variance (RM-ANOVA): 1st day = 3rd day = 7th day (p = 0.22 for heart rate and p = 0.69 for O2 saturation).