Differences in skin conductance activity variables (number of waves per second, amplitude of the waves, and baseline) and level of behavioral state between during and before and between after and before heel stick in premature infants
| During − before | After − before | |
| Number of waves/second | 0.03 (0–0.16) | 0 (−0.13–0.06) |
| Amplitude (μS) | 0.02 (−0.01–0.6) | 0 (−0.04–0.04) |
| Baseline (μS) | 0.3 (0.05–1.8) | 0.4 (0.1–2.3) |
| Level of behavioral state | 1.5 (0–3) | 0 (−1–2.5) |
Values are median (range).