. 2013 May 20;14(1):5. doi: 10.1186/2196-1042-14-5

Table 2.

Comparison of cephalometric changes before (T1) and after treatment (T2)

	T1		T2		T2-T1		P value
	Mean	SD	Mean	SD	Mean	SD
Angular measurements (deg)
SNA	79.8	4.8	81.8	5.0	2.0	2.0	<0.001^a
SNB	80.7	4.2	79.5	4.7	-1.2	2.3	<0.05^a
ANB	-0.9	2.3	2.3	3.2	3.2	1.9	<0.001^a
ML-NL	27.3	5.3	28.0	7.1	0.7	3.3	0.440^a
U1-NL	107.5	10.6	107.3	7.8	-0.2	7.9	0.911^a
Linear measurements (mm)
WITS	-4.8	2.1	-0.7	2.2	4.1	2.1	<0.001^a
Overbite	0.3	2.6	0.1	1.4	-0.2	2.2	0.783^a
Overjet	-0.2	2.2	2.5	1.5	2.7	2.5	<0.001^a
U6-A point	24.4	2.6	24.0	2.7	-0.4	1.0	0.134^b

^aPaired t test; ^bWilcoxon test.