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Table 2 Characteristics of children with caries increment from age 3- to 7 years and of their parents

From: Birth order is associated with caries development in young children: a register-based cohort study

VariablesCaries increment (Δ deft = 0)Caries increment (Δ deft > 0)
(n = 50,548)(n = 14,711)
%% Pa
Gender
 Boy7723 < 0.001
 Girl7822
Birth order
 First-born8119 < 0.001
 Second-born7822
 Third-born7129
 Fourth-born6139
 Fifth- or later-born5248
Maternal country of birth
 Sweden8317 < 0.001
 Abroad6040
Paternal country of birth
 Sweden8317 < 0.001
 Abroad6139
Maternal education level
  ≥ 13 years8317 < 0.001
 10–12 years7426
  ≤ 9 years5743
Family situation
 Cohabiting7822 < 0.001
 Single6634
Family income
 First quintile (highest)8515 < 0.001
 Second quintile8317
 Third quintile8020
 Fourth quintile7524
 Fifth quintile (lowest)6436
Social welfare allowance
 No7822 < 0.001
 Yes5545
Maternal smoking in early pregnancy
 No8614 < 0.001
 Yes8119
Maternal BMI in early pregnancy
  < 25.007921 < 0.001
 25.0029.997525
  ≥ 30.007030
Maternal age at delivery
 25–34 years7921 < 0.001
  < 25 years6436
  ≥ 35 years7822
  1. aP-values refer to univariate analyses in a binary logistic regression model