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Table 1 Characteristics of the participants included in the study

From: Anti-SARS-CoV-2 IgA and IgG in human milk after vaccination is dependent on vaccine type and previous SARS-CoV-2 exposure: a longitudinal study

  BioNtech/Pfizer
N=34
Moderna
N=20
Oxford/AstraZeneca
N=32
p-value
Maternal characteristics
 Age (years) 34.2 ±4.1 34.8 ±3.1 34.7 ±3.6 0.802
 Chronic diseases (hypothyroidism, heart disease) 8 (23.5%) 5 (33.3%) 6 (18.75%) 0.841
 Medication 5 (14.7%) 3 (14.3%) 3 (9.4%) 0.782
 Gestational age (weeks) 39.2 ±2.1 39.4 ±1.4 39.9 ±1.4 0.246
 Education degree (high-degree university studies) 32 (94.1%) 19 (95.2%) 29 (90.6%) 0.792
 SARS-CoV-2-positive PCR before vaccine 6 (17.1%) 2 (9.5%) 0 (0.0%) -
Infant characteristics
 Gender (female, %) 10 (29.4%) 9 (45%) 17 (53.1%) 0.141
 Mode of birth (C-section, %) 10 (29.4%) 6 (30%) 6 (18.7%) 0.535
 Weight at birth (g) 3308.4 ±420.6 3495.0 ±616.8 3457.8 ±369.1 0.262
 Length at birth (cm) 50.8 ±2.1 50.5 ±2.4 51.1 ±1.8 0.591
 Infant age at maternal vaccination (month) 14.3±11 11.0±5.2 12.4±7.6 0.385
 Exclusive breastfeeding at maternal vaccination (%) 5 (14.7%) 3 (15%) 4 (12.5%) 0.956
  1. Categorical data is presented as positive cases (% of the total population). Chi-squared test and one-way ANOVA were used to test significant differences in clinical categorical and continuous variables, respectively, according to vaccine