Table 2.
Descriptive characteristics of the 83 mother–child pairs included in the study.
| Mother–child pairs n = 83 | Missing dataa n | |
|---|---|---|
| Maternal characteristics | ||
| Age at childbirth (years), median (Q1, Q3) | 32.3 (30, 35) | 0 |
| University level education, n (%) | 71 (86) | 6 |
| BMI in the first trimester (kg/m2), n (%): | 0 | |
| Underweight (< 18.5) | 2 (2) | |
| Normal weight (18.5–24.9) | 62 (75) | |
| Overweight (25–29.9) | 16 (19) | |
| Obese (≥ 30) | 3 (4) | |
| Smoking during pregnancy, n (%) | 0 (0) | 2 |
| Multipara, n (%) | 26 (31) | 0 |
| Dispensed antibiotic prescription during pregnancy, n (%): | 18 (22) | |
| Birth characteristics | ||
| Caesarean delivery, n (%) | 15 (18) | 0 |
| Gestational age (weeks), n (%): | 0 | |
| Preterm (< 37) | 5 (6) | |
| Full term (37–41) | 73 (88) | |
| Post term (≥ 42) | 5 (6) | |
| Birth weight (grams), median (Q1,Q3) | 3,530 (3,230, 3,810) | 0 |
| Child characteristics | ||
| Male, n (%) | 50 (60) | 0 |
| Age at follow-up (months), median (Q1,Q3) | 0 | |
| Neonatal | 0.10 (0.07, 0.20) | |
| 6 months | 6.5 (6.1, 6.9) | |
| 12 months | 12.1 (11.8, 12.8) | |
| 24 months | 24.2 (24.0, 25.0) | |
| Age when exclusive breastfeeding was discontinued, n (%):b | 32 | |
| 0–2 months | 4 (8) | |
| 3–4 months | 14 (27) | |
| ≥ 5 months | 33 (65) | |
| Dispensed antibiotic prescription before age 2, n (%): | 15 (18) | 0 |
| Other characteristics | ||
| Furry pet present in household, n (%) | 12 (21) | 25 |
Q1: First Quartile. Q3: Third Quartile.
BMI Body Mass Index.
aInformation on smoking during pregnancy was not recorded in the Medical Birth Register. Mothers did not answer the questions on education, breastfeeding or presence of furry pet.
bWe did not perform an analysis of a potential association between breastfeeding and gut microbiota as children who were exclusively breast-fed for ≥ 5 months may have been introduced to foods at the 6 months sampling occasion. Breastfeeding also had a high number of missing values.