Table 2.

Descriptive statistics and statistical comparisons (independent-samples t-tests) of the T2–T1 changes

Variables	Pendulum group		Clear aligner group				95% CI of the difference
	n = 20	f = 15; m = 5	n = 20	f = 13; m = 7
	Mean	SD	Mean	SD	Difference	P. value	Lower	Upper
SNA°	0.4	2.2	0.2	1.9	0.2	NS	− 0.7	2.3
SNB°	0.1	2.1	1.1	1.1	− 1	NS	− 0.1	2.7
ANB°	0.8	1.4	1.2	1.2	− 0.4	NS	− 1.4	0.6
SN^GoGn°	2.1	1.8	− 0.3	1.5	2.4	**	− 2.4	− 0.1
ArGo^GoMe°	0.7	4.6	− 3.4	2.9	4.1	*	− 5.6	− 0.2
N-Me mm	4.4	6.1	− 1.2	3.1	5.6	*	− 6.2	− 0.7
N-ANS mm	0.8	5.3	− 1.2	2.1	2	NS	− 5.1	1.2
ANS-Me mm	3.0	4.4	− 0.6	3.0	3.6	NS	− 5.3	0.4
SN^POccl °	2.8	2.9	− 4.2	3.0	7.0	***	− 9.3	− 4.7
SN^ANS-PNS °	0.3	2.5	− 1.1	1.9	1.4	NS	− 3.2	0.2
OVJ mm	− 1.2	2.5	− 1.3	0.9	0.1	NS	0.85	2.2
OVB mm	1.2	1.8	1.2	1.2	0	NS	− 1.1	1.2
L6-GoMe mm	2.1	2.4	− 0.2	1.2	2.3	**	− 3.4	− 0.4
U6-ANSPNS mm	1.3	3.0	− 0.9	0.8	2.2	**	− 3.9	− 0.4

NS not significant, CI confidence of interval

* < 0.05, ** < 0.01, *** < 0.001