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Table 1 Demographic characteristics of mother-daughter dyads (N = 154)

From: Maternal food allergy is associated with daughters’ menarche in early adolescence

  n %
Maternal characteristics
 Ever smoked 66 42.9
 Ethnicity
  Caucasian 133 86.4
  Indigenous 15 9.7
  Visible minority 6 3.9
 Highest education
  No post-secondary 19 13.2
  Post-secondary 125 86.8
 Income ($)
   < 49,999 46 32.2
   > 50,000 97 67.8
 Region
  Urban 90 58.4
  Rural 64 41.6
 Ever breastfed daughter 130 84.4
 Maternal depression after daughter’s birth
  No 74 56.1
  Yes 58 43.9
 Allergic disease
  Asthma
   Ever 44 28.6
   Pre-pubertal 18 42.9
  Food allergy 29 18.8
  Eczema 42 27.3
  Rhinitis 70 45.5
Daughters' characteristics
 Born at 38+ weeks 136 88.3
 Thelarchea 109 79.5
 Menarcheb 64 41.6
  Mean ± SD  
 Birthweight (kg) 3.35 ± 0.60  
 Gestational age (weeks) 39.6 ± 1.7  
 BMI in adolescence 21.0 ± 5.2  
  1. aMiddle/late thelarche, per daughters’ reported Tanner staging
  2. bBased on daughters’ reports