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Table 1 Characteristics of study participants with gut microbiota data completing the study (n = 201)

From: Administration of two probiotic strains during early childhood does not affect the endogenous gut microbiota composition despite probiotic proliferation

Parameter Probiotics group (n = 103) Placebo group (n = 98) P-value
Gender
 Girls (%) 45.6 46.9 0.888a
 Boys (%) 54.4 53.1  
Mode of delivery
 C-section (%) 23.3 15.3 0.159a
 Vaginal (%) 76.7 84.7  
Older siblings
 Siblings (%) 48.5 43.9 0.572a
 No siblings (%) 51.5 56.1  
Introduction of selected foods
 Cow’s milk (median months, IQR) 8.0 (7.0–12.0) 9.0 (6.0–11.0) 0.947b
 Meat (median months, IQR) 6.0 (6.0–7.0) 6.0 (6.0–7.0) 0.242b
 Fish (median months, IQR) 6.0 (6.0–7.0) 6.0 (6.0–7.0) 0.544b
Breastfeeding prevalence
 1st visit (%) 54.4 46.9 0.325a
 2nd visit (%) 13.6 9.2 0.380a
Age
 1st visit (median months, IQR) 10.0 (9.5–10.4) 9.8 (9.5–10.4) 0.462b
 Start daycare (median months, IQR) 10.4 (9.9–11.2) 10.3 (9.9–11.1) 0.309b
 2nd visit (median months, IQR) 16.1 (15.6–16.5) 16.0 (15.6–16.4) 0.510b
Compliance
 2nd visit (median % of consumed sticks, IQR) 97 (93–99) 98 (94–100) 0.417b
  1. aFishers exact test
  2. bMann Whitney test