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Table 1 General characteristics of the study population

From: Natural history of gastroesophageal reflux in infancy: new data from a prospective cohort

Sex, N(%)
 Male77 (54.6)
 Female64 (45.4)
Maternel age (min-max)25.2 (20.3–43.8)
Questionnaire Responders, N(%)
 Mother131 (92.9)
 Father4 (2.8)
 Mother and Father5 (3.6)
 Missing data1 (0.7)
Family history of Gastroesophageal reflux, N(%)55 (39)
Number of older children, N(%)
 None45 (32)
 144 (31.2)
  ≥ 252 (36.8)
Baseline diet, N(%)
 Breastfeeding69 (48.9)
 Breastfeeding and infant formula31 (22)
 Infant formula41 (29.1)
Passive Smoking exposure, N(%)
 Paternal smoking31 (22)
 Maternal smoking5 (3.6)
Body positioning during sleep, N(%)
 Dorsal decubitus134 (95.1)
 Ventral decubitus3 (2.1)
 Lateral decubitus3 (2.1)
 Missing data1 (0.7)
Infant’s hospitalization at least one questionnaire, N(%)
 Any hospitalisation29 (20.6)
 No related to GER27 (19.1)
 Related to GER2 (1.4)
Developmental milestones, N(%)
 Sitting position acquired before 9 months122 (96)
 Standing position acquired before 12 months89 (69)
Age of Introduction of solid foods, median (min-max)
 Fruits6.1 (5.2–6.1)
 Vegetables6.3 (5.3–7.4)
 Fish and/or meet and/or egg6.4 (6–7.3)
 Gluten6.5 (6.1–7.3)
GERD on at least one questionnaire, N(%)27 (19.1)
Proton pump inhibitor treatment, N(%)6 (4.3)
Prokinetic treatment, N(%)9 (6.4)