Table 7.

Means, SDs, and Mann–Whitney U (between-group differences) standardized test statistics and P values in the 3 studied groups

Variables	Group 1	Group 2	Group 3	Groups 1 and 2	Groups 1 and 3	Groups 2 and 3
	Mean (SD)	Mean (SD)	Mean (SD)	Standardized statistics, P value	Standardized statistics, P value	Standardized statistics, P value
Incisor vertical movement (mm) (+ intrusion, − extrusion)	0.04 (0.63)	0.24 (0.42)	0.58 (0.60)	(− 0.85, P = 0.405)	(− 2.27, P = 0.022)	(− 2.14, P = 0.032)
Molar vertical movement (mm) (+ intrusion, − extrusion)	− 0.41 (0.81)	− 0.06 (0.48)	− 0.16 (0.51)	(− 1.39, P = 0.165)	(− 2.52, P = 0.011)	(− 2.09, P = 0.038)
Incisor crown forward movement (mm)	0.78 (0.32)	1.05 (0.54)	1.04 (0.32)	(− 1.86, P = 0.072)	(− 2.68, P = 0.008)	(− 0.66, P = 0.525)
Incisor root forward (mm)	0.32 (0.30)	0.59 (0.72)	0.45 (0.21)	(− 1.29, P = 0.219)	(− 1.88, P = 0.064)	(− 0.017, P = 0.987)
Molar crown (mm) (+ mesial, − Distal)	0.31 (0.93)	− 0.20 (1.19)	− 0.54 (0.89)	(− 1.61, P = 0.110)	(− 0.514, P = 0.628)	(− 1.70, P = 0.103)
Molar root (mm) (+ mesial, − distal)	0.06 (0.66)	0.03 (0.96)	0.06 (1.06)	(− 0.10, P = 0.935)	(− 0.37, P = 0.719)	(− 0.150, P = 0.883)