Table 1: Baseline demographics

From: Probiotics and vitamin C for the prevention of respiratory tract infections in children attending preschool: a randomised controlled pilot study

 Placebo (N=33)Active (N=33)All (N=66)
Gender (n)
 Girls161632
 Boys171734
    
Age (years)a5.0 (0.7)4.9 (0.8)5.0 (0.9)
 Girls4.9 (0.8)4.8 (0.9)4.8 (0.8)
 Boys5.2 (0.6)5.0 (0.8)5.1 (0.7)
    
BMI (kg/m2)a15.6 (2.5)15.5 (2.2)15.5 (2.3)
 Girls15.3 (2.0)15.8 (2.4)15.5 (2.2)
 Boys15.9 (2.9)15.2 (2.0)15.5 (2.5)
    
Centre, n (%)
Centre 121 (63.6)21 (63.6)42 (63.6)
 Centre 26 (18.2)6 (18.2)12 (18.2)
 Centre 36 (18.2)6 (18.2)12 (18.2)
    
Eczema, n (%)5 (15.2)2 (6.1)7 (10.6)
Atopic disease,b n (%)4 (12.1)2 (6.1)6 (9.1)
Food allergy, n (%)3 (9.1)0 (0)3 (4.5)
Coeliac disease, n (%)0 (0)1 (3.0)1 (1.5)
  1. Abbreviation: BMI, Body Mass Index.
  2. aData are presented as mean (s.d.), intention to treat analysis.
  3. bAllergic rhinitis, atopic eczema or asthma.