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Table 6 Comparison of changes in the treatment group (T2 − T1) vs. control group (t2 − t1) in the pooled subjects

From: Treatment effects of a fixed intermaxillary device to correct class II malocclusions in growing patients

  Pooled (males and females)
Variable Control (t2 − t1) Treated (T2 − T1) pvalue   Significance
Mean SD Mean SD Difference
Sagittal        
 OLp-Apt 5.1 2.5 3.9 2.4 0.1148 −1.2 NS
 OLp-Pg 6.6 3.1 7.3 3.9 0.5216 0.7 NS
 OLp-Co 1.0 1.7 1.5 2.0 0.4038 0.5 NS
 Co-Apt 6.2 3.3 5.4 3.2 0.4360 −0.8 NS
 Co-Gn 9.3 3.7 10.4 4.1 0.3453 1.1 NS
 Co-Gn minus Co-Apt 3.1 2.2 5.0 2.3 0.0086 1.9 *
 Wits 0.5 1.5 −2.2 1.9 0.0001 −2.7 *
 Is-OLp 5.6 2.7 2.9 4.6 0.0218 −2.6 *
 Ii-OLp 5.5 2.5 7.5 3.0 0.0212 2.0 *
 Overjet 0.1 1.3 −4.5 2.9 0.0001 −4.6 *
 Ms-OLp 6.4 2.8 4.8 3.5 0.0928 −1.6 NS
 Mi-OLp 7.0 2.9 8.9 3.6 0.0495 2.0 *
 Molar relationship −0.5 1.2 −4.1 1.9 0.0001 −3.6 *
Vertical        
 Ols-Apt 3.2 1.7 2.8 1.9 0.5570 −0.3 NS
 ANS-Me 4.8 2.5 5.1 3.6 0.7537 0.3 NS
 Is-NL 1.6 1.6 1.2 1.9 0.4031 −0.4 NS
 Ii-ML 3.2 1.6 1.8 3.0 0.0680 −1.4 NS
 Overbite 0.2 1.4 −1.8 1.1 0.0001 −2.0 *
 Msc-NL 3.0 1.5 2.6 1.8 0.4641 −0.4 NS
 Mic-ML 2.6 1.6 4.0 2.0 0.0126 1.4 *
Angular        
 SNA 1.6 1.8 0.1 1.2 0.0013 −1.5 *
 SNB 1.4 1.3 1.7 1.3 0.5147 0.3 NS
 ANB 0.2 1.2 −1.5 1.2 0.0001 −1.8 *
 SNL-NL 0.2 1.8 −0.4 1.9 0.2456 −0.6 NS
 SNL-ML −0.7 1.4 −1.6 2.6 0.1634 −0.9 NS
 SNL-Olf −2.0 3.1 −0.8 2.2 0.1382 1.2 NS
 Is/NL −0.1 3.1 2.8 22.0 0.5489 2.9 NS
 Ii/ML −0.6 3.4 3.9 4.6 0.0005 4.5 *
 Inter-incisal angle 1.7 5.8 −1.3 11.5 0.2744 −3.0 NS