Table 3.

t-test for paired and unpaired data: difference from T1 to T2.

Variable	Standard group (n = 14)		Miniscrew group (n = 14)		Difference between groups
	T2-T1 [mean (95% CI)]	P	T2-T1 [mean (95% CI)]	P	Mean (95% CI)	P
A/Olp, mm	2.8  (1.3 to 4.4)	0.003	0.2 (−1.1 to 1.5)	0.728	2.6 (0.6 to 4.6)	0.015
Pg/Olp, mm	−1.6  (−4.4 to 1.3)	0.257	−3.4 (−5.3 to −1.6)	0.002	1.9 (1.8 to 6.1)	0.253
Is/Olp, mm	0.8 (−1.2 to 2.8)	0.42	−0.9 (−2.6 to 0.8)	0.26	1.7 (−0.8 to 4.2)	0.1752
Ii/Olp, mm	−2.4 (−3.9 to −0.8)	0.007	−3.4 (−4.9 to −1.9)	0.0001	1.1 (−1.0 to 3.2)	0.2998
Ms/Olp, mm	3.2 (1.8 to 4.6)	0.002	0.9 (−0.2 to 1.9)	0.111	2.4 (0.7 to 4.0)	0.0075
Mi/Olp, mm	−2.1 (−3.8 to −0.5)	0.016	−4.1 (−6.1 to −2.2)	0.001	2.0 (−0.5 to 4.5)	0.1072
A/Olp − Pg/Olp, mm	0.3 (−0.9 to 1.5)	0.612	3.6 (2.2 to 5.1)	0.0001	−3.4 (−5.0 to −1.6)	0.0007
Ar/Olp, mm	−0.6 (−2.2 to 0.9)	0.385	−1.1 (−2.4 to 0.1)	0.076	0.5 (−1.4 to 2.4)	0.5948
Ar/Olp + Pg/Olp, mm	−0.9 (−2.4 to 0.7)	0.263	−4.6 (−6.4 to −2.8)	0.0001	3.7 (1.5 to 6.0)	0.0024
Ii/GoMe, degrees	−7.5 (−10.7 to −4.3)	0.0001	−0.6 (−3.9 to 2.7)	0.713	−6.9 (−11.3 to −2.6)	0.0031
Ms/Olp − Mi/Olp, mm	5.4 (3.6 to 7.1)	0.0001	5 (2.9 to 7.1)	0.0001	0.4 (−2.2 to 2.9)	0.7784
SN/GoMe, degrees	−0.2 (−1.9 to 1.5)	0.788	0.9 (−0.5 to 2.2)	0.189	−1.1 (−3.1 to 1.0)	0.2913
Is/Olp − Ii/Olp, mm	3.1 (2.0 to 4.3)	0.0001	2.5 (1.4 to 3.6)	0.0001	0.6 (−0.9 to 2.2)	0.3919
AN/NPg, degrees	1.6 (0.5 to 2.7)	0.007	2.6 (1.9 to 3.3)	0.0001	−0.9 (−2.2 to 0.3)	0.137