Table 3. T-test for equality of increments (mean and std.) between UCLP subjects relative to the average age-matched face of control subjects (p-value) for the three age intervals.

Region	Age interval (months)	Mean increment mean (mm)	95% CI	p-value (mean)	Mean increment std. (mm)	95% CI	p-value (std.)
Full face	3–6	2.5	0.8–4.2	0.01a	−0.3	−1.4–0.8	0.55
	6–9	−1.0	−2.7–0.8	0.27	−0.7	−1.5–0.1	0.09
	9–12	1.4	−1.1–4.0	0.26	−0.2	−1.3–0.8	0.65
Nose	3–6	2.2	0.4–4.0	0.02a	0.0	−1.1–1.1	0.99
	6–9	−1.0	−2.7–0.8	0.27	−0.7	−1.7–0.3	0.15
	9–12	1.9	−0.5–4.3	0.11	−1.0	−1.9 to −0.2	0.02c
Upper lip	3–6	1.5	−0.9–4.0	0.21	0.9	−0.3–2.1	0.15
	6–9	0.0	−2.3–2.3	0.99	−2.5	−3.5 to −1.5	0.01b
	9–12	2.4	−0.7–5.5	0.13	−0.5	−1.2–0.2	0.15
Chin	3–6	3.2	−0.4–6.8	0.08	−1.9	−5.4–1.6	0.26
	6–9	−0.7	−4.6–3.1	0.70	−1.2	−2.9–0.5	0.17
	9–12	−0.4	−4.7–3.8	0.84	1.9	−0.4–4.3	0.10
Forehead	3–6	2.4	−0.6–5.4	0.11	0.4	−0.6–1.4	0.44
	6–9	−2.0	−4.9–0.9	0.17	−0.1	−1.1–0.9	0.87
	9–12	3.3	0.1–6.4	0.04c	−0.4	−1.5–0.6	0.42
Cheeks	3–6	2.6	0.2–5.0	0.03a	−0.8	−2.2–0.5	0.21
	6–9	−0.4	−2.8–2.0	0.75	−0.3	−1.3–0.6	0.50
	9–12	0.1	−3.1–3.4	0.93	−0.4	−1.5–0.7	0.42

Notes:

UCLP, unilateral cleft lip, alveolus, and palate; Std, standard deviation.

^aSignificant differences in the age interval of 3−6 months in the mean difference for the full face, nose, and cheeks.

^bSignificant differences in the age interval of 6−9 months in the mean difference for the standard deviation of the upper lip and nose.

^cSignificant differences in the age interval of 9−12 months in the mean difference for the forehead and the standard deviation of the nose.