TABLE 2.

Intra‐ and inter‐observer reliability

	Intra‐observer reliability		Inter‐observer reliability
	ICC	Mean difference (mm)	ICC	Mean difference (mm)
Linear measurements
Philtrum width	0.929	0.08	0.824	−0.05
lip width	0.992	−0.72	0.863	−1.56
Upper lip height	0.983	0.15	0.929	0.11
Cutaneous upper lip height	0.952	0.37	0.959	0.19
Upper vermillion height	0.925	−0.22	0.972	−0.09
Lower lip height	0.994	−0.25	0.976	−0.03
Lower vermillion height	0.97	0.01	0.928	−0.19
Cutaneous lower lip height	0.986	−0.26	0.963	0.16
Vermillion height	0.99	−0.10	0.935	0.07
Total lip height	0.984	−0.21	0.995	−0.28
Angular measurements
Angle 1	0.871	−2.45	0.917	−1.90
Angle 2	0.843	−2.60	0.952	−1.26
Angle 3	0.967	1.07	0.966	1.27
Angle 4	0.955	1.37	0.991	2.19
Surface area measurements
Upper lip area	0.953	1.50	0.894	2.63
Lower lip area	0.974	−12.25	0.902	−13.38
Total lip area	0.966	−10.75	0.893	−10.75

Mean difference of linear measurements is in mm; mean difference of angular measurements is in degrees; and mean difference of surface area measurements is in mm^2.