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^*