. Author manuscript; available in PMC: 2014 Jun 4.

Published in final edited form as: Am J Orthod Dentofacial Orthop. 2011 Jun;139(6):815–822.e1. doi: 10.1016/j.ajodo.2010.04.032

Table I.

Treatment characteristics of the experimental sample

Observation time point	n	Mean time (mo)	SD	Minimum	Maximum
T1–T2 (distraction completed)	38	0.68	0.23	0.46	1.81
T2–T3 (expander retention)	38	5.95	0.68	4.21	7.13
T1–T4 (start to second surgery)	32	15.27	3.99	9.40	24.28
T2–T5 (end of expansion to deband)	37	21.59	5.28	12.88	41.69
T3–T5 (expander out to deband)	37	15.64	5.09	7.79	35.19
D1–T5 (total treatment time)	37	23.57	5.27	15.41	43.07
T5–T6 (postorthodontic treatment)	23	25.35	4.49	20.96	39.49

D1, Treatment initiated in the mandibular arch; T(x)–T(y), observation between 2 time points.