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Table 2 Logistic regression analysis of the association between feeding duration and occlusal characteristics

From: Effects of breast-feeding duration, bottle-feeding duration and non-nutritive sucking habits on the occlusal characteristics of primary dentition

Characteristics   Breast-feeding duration     Bottle-feeding duration    
  0-6 months >6 months     6-18 months >18 months    
  n (%) n (%) OR 95% CI P n (%) n (%) OR 95% CI P
Posterior crossbite yes 11(3.7) 6(1.4)     9(3.0) 8(1.9)    
  no 289(96.3) 428(98.6) 3.13 1.11-8.82 0.031* 296(97.0) 421(98.1) 2.03 0.73-5.66 0.173
No maxillary space yes 110(36.7) 114(26.3)     83(27.2) 130(30.3)    
  no 190(63.3) 320(73.7) 1.63 1.23-2.98 0.038* 222(72.8) 299(69.7) 1.13 0.80-1.58 0.485
Nonmesial step yes 108(36.0) 157(36.2)     181(59.3) 288(67.1)    
  no 192(64.0) 277(63.8) 0.97 0.71-1.33 0.862 124(40.7) 141(32.9) 1.45 1.06-2.1 0.018*
Class IIcanine relationship yes 92(30.7) 135(31.1)     81(26.6) 146(34.0)    
  no 208(69.3) 299(68.9) 0.94 0.68-1.31 0.713 224(73.4) 283(66.0) 1.43 1.03-2.0 0.034*
Anterior open bite yes 3(1.0) 4(0.9)     3(1.0) 4(0.9)    
  no 297(99.0) 430(99.1) 0.87 0.18-4.26 0.861 302(99.0) 425(99.1) 0.61 0.12-3.18 0.559
Anterior crossbite yes 25(8.3) 37(8.5)     30(9.8) 32(7.5)    
  no 289(96.3) 428(98.6) 0.93 0.54-1.61 0.792 275(90.2) 397(92.5) 0.67 (0.39-1.16) 0.152
  1. Multivariate logistic regression analysis was used to the calculate odds ratio (OR) of breastfeeding duration and bottle-feeding duration developing a particular occlusion characteristic.
  2. *Comparisons are significantly different, P < 0.05.