Table 3. Soft tissue thickness measurements of different BMI percentile groups and inter-group comparisons.

						Tukey’s HSD
	Group	n	Mean	SD	SE	I‒II	I‒III	II‒III
Glabella	Underweight	24	5.34	0.62	0.12	NS	0.000	0.000
	Normal weight	24	5.49	0.74	0.15
	Overweight	24	6.69	1.19	0.24
Nasion	Underweight	24	5.23	1.05	0.21	0.021	NS	NS
	Normal weight	24	6.05	1.15	0.23
	Overweight	24	5.69	0.84	0.17
A-Sn	Underweight	24	15.61	2.11	0.43	NS	NS	NS
	Normal weight	24	14.59	1.47	0.30
	Overweight	24	15.69	1.67	0.34
Labiale superius	Underweight	24	11.93	1.70	0.34	NS	0.000	0.001
	Normal weight	24	12.55	2.03	0.41
	Overweight	24	14.56	1.61	0.32
Stomion	Underweight	24	5.27	1.64	0.33	NS	0.000	0.042
	Normal weight	24	6.14	1.56	0.31
	Overweight	24	7.28	1.64	0.32
Labiale inferius	Underweight	24	13.39	1.84	0.37	NS	0.003	NS
	Normal weight	24	14.11	1.38	0.28
	Overweight	24	15.15	2.03	0.41
Labiomentale	Underweight	24	10.33	0.92	0.18	NS	NS	NS
	Normal weight	24	11.08	1.39	0.28
	Overweight	24	11.15	1.76	0.45
Pogonion	Underweight	24	7.84	1.31	0.26	NS	0.000	0.017
	Normal weight	24	8.77	1.18	0.24
	Overweight	24	9.91	1.66	0.33
Gnathion	Underweight	24	6.77	1.15	0.23	0.045	0.000	NS
	Normal weight	24	7.72	1.13	0.23
	Overweight	24	8.59	1.68	0.34
Menton	Underweight	24	6.27	1.03	0.21	NS	0.000	0.013
	Normal weight	24	7.97	0.94	0.19
	Overweight	24	7.86	1.17	0.23

Note:

BMI, body mass index; HSD, honest significant difference; SD, standard deviation; SE, standard error; NS, not significant.