| ΔT (T0 − T28) Left eye smile | ΔT (T0 − T28) Right eye smile | Mean of the differences | 95% confidence interval | t-value | p-value | |
Average | Average | Low | Upper | ||||
Sleeping on the right or both side (N = 6) | 9.33 | 3.33 | 6 | −12.8 | 24.8 | 0.016 | 0.4513 |
Sleeping on the left or both side (N = 12) | 14.58 | 6.08 | 8.5 | −67.3 | −18.8 | −5.663 | 0.0490* |