Effectiveness of a low-intensity static magnetic field in accelerating upper canine retraction: a randomized controlled clinical trial

Table 3 The results of statistical tests for the difference in upper canine retraction between both sides (mm/month)

Time	Variable	n	Mean	Std. deviation	Mean difference	Stander deviation difference	The confidence interval 95%		t value	P value
Time	Variable	n	Mean	Std. deviation	Mean difference	Stander deviation difference	Lower	Upper	t value	P value
T0-T1	C.RetS.C	17	1.42	0.661	-0.208	0.33	-0.38	-0.04	-2.601	0.019*
T0-T1	C.RetS.E	17	1.63	0.592	-0.208	0.33	-0.38	-0.04	-2.601	0.019*
T1-T2	C.RetS.C	17	1.17	0.606	-0.721	0.59	-1.03	-0.42	-5.001	0.000***
T1-T2	C.RetS.E	17	1.89	0.507	-0.721	0.59	-1.03	-0.42	-5.001	0.000***
T2-T3	C.RetS.C	14	1.24	0.613	-0.124	0.42	-0.36	0.12	-1.117	0.2840 (NS)
T2-T3	C.RetS.E	14	1.37	0.493	-0.124	0.42	-0.36	0.12	-1.117	0.2840 (NS)
T3-T4	C.RetS.C	4	1.38	0.35	0.1640	0.65	-0.87	1.19	0.505	0.6490 (NS)
T3-T4	C.RetS.E	4	1.21	0.489	0.1640	0.65	-0.87	1.19	0.505	0.6490 (NS)
T0-Tf	C.RetS.C	17	1.35	0.41	-0.992	0.16	-0.40	-0.24	-6.64	0.000***
T0-Tf	C.RetS.E	17	1.67	0.43	-0.992	0.16	-0.40	-0.24	-6.64	0.000***

T0-T1: 1st month after upper canine retraction, T1-T2: 2nd month after upper canine retraction, T2-T3: 3rd month after upper canine retraction, T3-T4: 4th month after upper canine retraction, T0-TF: the overall duration
C.RetS.C: Canine retraction speed control side (mm/month)
C.RetS.E: Canine retraction speed experimental side (mm/month)
NS No significant difference
* Significant difference at P < 0.05, *** Significant difference at P < 0.01. Using a paired t test

ISSN: 1472-6831