Table 3.
Patient Characteristics (N = 31)a
| Variable |
Group L (n = 16) |
Group S (n = 15) |
P Value |
| Age, y | |||
| Range | 19 to 35 | 19 to 30 | |
| Mean (SD) | 23.6 (4.4) | 22.3 (2.6) | .57b |
| Sex, n (%) | .89c | ||
| Female | 6 (37.5) | 6 (40.0) | |
| Male | 10 (62.5) | 9 (60.0) | |
| ANB, ° | |||
| Range | −6.0 to 3.7 | −7.0 to 6.9 | |
| Mean (SD) | −0.6 (3.0) | 0.8 (4.5) | .40b |
| Transverse differential index,11 mm | |||
| Range | 20.3 to 30.9 | 21.9 to 32.7 | |
| Mean (SD) | 25.7 (4.4) | 25.8 (3.9) | .98d |
| Turn, n | |||
| Range | 25 to 40 | 24 to 35 | |
| Mean (SD) | 30.4 (4.2) | 29.9 (3.5) | .72d |
| Duration, mo | |||
| Range | 4.3 to 10 | 4.1 to 7.9 | |
| Mean (SD) | 6.1 (1.6) | 5.6 (1.3) | .45b |
a
SD, standard deviation; turn, activation number of miniscrew-assisted rapid palatal expansion (MARPE); duration, duration between initial activation and removal of the MARPE appliance (T1–T2).
b
P value was calculated using Mann-Whitney U-test.
c
P value was calculated using chi-square test.
d
P value was calculated using independent t-test.