Table 1.
Demographic and clinical characteristic of all patients
| Total | Control | PBM | ||||||
|---|---|---|---|---|---|---|---|---|
| mean or % | SD | mean or % | SD | mean or % | SD | p-value* | ||
| Demographic Characteristics | ||||||||
| n | 19 | 8 | 11 | |||||
| Age (years) | 13.9 | 1.7 | 13.5 | 1.8 | 14.1 | 1.7 | NS | |
| Female (%) | 68.4 | 62.5 | 72.7 | NS | ||||
| Caucasian (%) | 68.4 | 75 | 63.6 | NS | ||||
| Clinical Characteristics | ||||||||
| Number of Arches | 28 | 10 | 18 | |||||
| Upper Arches | 13 | 3 | 10 | NS | ||||
| Lower Arches | 15 | 7 | 8 | NS | ||||
| Mandible (%) | 53.6 | 70 | 44.4 | NS | ||||
| Crowding (LII - mm) | 6.7 | 2.6 | 5.8 | 1.6 | 7.3 | 3.0 | NS | |
NS - Not significant
*p-value for comparison of group means by Mann-Whitney U or differences in proportions by chi-square test as appropriate
* p-value cutoff of 0.05 is used to determine significance