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Table 1 The distribution of various parameters studied according to the duration of breastfeeding

From: Association between breastfeeding duration, non-nutritive sucking habits and dental arch dimensions in deciduous dentition: a cross-sectional study

Parameters Category Breastfeeding <6 months (n = 158) Breastfeeding ≥6 months (n = 257) OR (95% CI) Pvalue
Age (years) 4 0 1 (0.4) -- --
5 61 (38.6) 80 (31.1) --
6 97 (61.4) 176 (68.5) --
Sex Male 85 (53.8) 143 (55.6) -- --
Female 73 (46.2) 114 (44.4) --
Sucking habit Digit sucking 17 (10.8) 14 (5.4) 2.093 (1.00 to 4.37) 0.046 (S)
Thumb sucking 12 (7.6) 13 (5.1) 1.543 (0.68 to 3.47) 0.292 (NS)
Dummy sucking 4 (2.5) 4 (1.6) 1.643 (0.40 to 6.66) 0.483 (NS)
Non-nutritive sucking 32 (20.3) 31 (12.1) 1.852 (1.08 to 3.18) 0.024 (S)
Malocclusion Open bite 1 (0.6) 2 (0.8) 0.812 (0.073 to 9.03) 0.865 (NS)
Crossbite 20 (12.7) 5 (1.9) 7.304 (2.68 to 19.89) 0.001 (S)
Distance (cm) Maxilla ICD 3.96 ± 0.33 4.05 ± 0.34 -- 0.006 (S)
Maxilla IMD 5.08 ± 0.34 5.19 ± 0.31 -- 0.001 (S)
Mandible ICD 3.53 ± 0.33 3.56 ± 0.32 -- 0.342 (NS)
Mandible IMD 4.63 ± 0.30 4.74 ± 0.34 -- 0.002 (S)
  1. Values of age, sex, sucking habit and malocclusion are n (%), P values of which are obtained using a chi-square test. Values of distance are shown as mean ± standard deviation, P values of which are obtained using independent samples ‘t’ test after confirming the underlying normality assumption. P < 0.05 is considered to be statistically significant. S, statistically significant; NS, statistically non-significant.