Table 1.
Compliance With Removable Appliances and Statistical Significancea
| Category |
n |
Mean Compliance (Hours per Day) |
SD |
% Compliance |
P Value |
Significance |
| Appliance type | .2 | NS | ||||
| Intraoral | 14 | 9.5 | 2.5 | 72.9 | ||
| Extraoral | 16 | 8.0 | 3.2 | 61.5 | ||
| Appliance type | ||||||
| Frankel | 11 | 8.6 | 1.9 | 66.3 | PM vs FK: .64 | NS |
| Bionator | 3 | 12.6 | 1.8 | 97.1 | PM vs BI: .002 | S |
| Face mask | 16 | 8.0 | 3.2 | 61.5 | FK vs BI: .006 | S |
| Gender | .07 | NS | ||||
| Boy | 16 | 7.8 | 3.4 | 60.0 | ||
| Girl | 14 | 9.7 | 1.9 | 74.6 | ||
| Age | 6–8 y vs 12–15 y: .012 | S | ||||
| 6–8 | 7 | 10.4 | 1.6 | 80.0 | ||
| 9 | 9 | 8.8 | 4.1 | 67.7 | ||
| 10–11 | 8 | 7.9 | 3.1 | 60.8 | ||
| 12–15 | 6 | 7.7 | 1.2 | 59.2 | ||
| Observation period | ||||||
| Month 1 | 30 | 8.4 | 3.2 | 64.6 | 1st month vs 5th month: .16 | NS |
| Month 2 | 30 | 9.3 | 3.8 | 71.5 | ||
| Month 3 | 28 | 9.1 | 2.9 | 70.0 | ||
| Month 4 | 25 | 8.8 | 3 | 67.7 | ||
| Month 5 | 22 | 9.4 | 2 | 72.3 | 5th month vs 8th month: .25 | NS |
| Month 6 | 15 | 9.0 | 2.4 | 68.9 | ||
| Month 7 | 11 | 8.4 | 2.1 | 64.6 | ||
| Month 8 | 10 | 8.1 | 3 | 62.6 | ||
| Psychological maturity | ||||||
| High control | 2 | 9.9 | 1.4 | 76.2 | HC vs MC: .92 | NS |
| Medium control | 13 | 8.7 | 3.1 | 67.0 | HC vs LC: .77 | NS |
| Low control | 15 | 8.5 | 3.1 | 65.3 | MC vs LC: .84 | NS |
| Awareness monitoring | .2 | NS | ||||
| Informed | 14 | 9.4 | 2.6 | 72.4 | ||
| Not informed | 16 | 8.1 | 3.2 | 61.9 |
a
SD indicates standard deviation; NS, not significant; S, significant (P < .05); FM, face mask; FK, Frankel; BI, bionator; HC, high control; MC, medium control; and LC, low control.