Table 2: Intergroup comparison of gender, malocclusion type, treatment type, bruxism, onychophagia, object biting, tongue thrusting, thumb sucking, allergies and presence of initial resorption (Chi-square).

Variables GROUP 1
Mild Resorption
N = 507 		GROUP 2
Moderate to Severe Resorption
N = 93 		λ DF P
GENDER MALE 252 40 1.40 1 0.235
FEMALE 255 53
MALOCCLUSION CLASS l 220 38 0.26 2 0.877
CLASS ll 269 52
CLASS lll 18 3
TYPE OF TREATMENT WITH EXTRACTION 192 58 19.40 1 0.000*
WITHOUT EXTRACTION 315 35
BRUXISM YES 12 2 0.01 1 0.898
NO 495 91
ONYCHOPHAGY YES 163 36 1.52 1 0.216
NO 344 57
BITING HABITS YES 39 12 2.74 1 0.097
NO 468 81
TONGUE THRUSTING YES 53 16 3.51 1 0.060
NO 454 77
SUCKING YES 25 4 0.06 1 0.794
NO 482 89
ALLERGIES YES 213 46 1.77 1 0.182
NO 294 47
ARR at T1 0 181 34 42.16 3 0.000*
1 322 48
2 4 8
3 0 3
4 0 0

*Statistically significant for P<0.05