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. 2021 Apr 28;19:177. doi: 10.1186/s12967-021-02839-w

Table 1.

Characteristics of study participants

Characteristic P1 (n = 8) P2 (n = 20) P3 (n = 19) P4 (n = 20) P5 (n = 21) P6 (n = 13)
Sex (F/M) 4/4 9/11 10/9 9/11 10/11 8/5
Mode of delivery (C/V) 5/3 11/9 11/8 12/8 12/9 6/7
Birth weight (g) 3472 ± 507 3320 ± 548 3311 ± 518 3322 ± 550 3341 ± 543 3352 ± 582
Body weight (kg) 3.36 ± 0.54 4.49 ± 0.74 8.26 ± 1.18 10.40 ± 1.29 13.00 ± 1.68
Feeding method (N/F) 8/0 20/0 15/4 9/11 4/17 0/13
Breastfeeding time (weeks) 36.2 ± 25.6 30.0 ± 26.7 27.1 ± 24.9 27.9 ± 26.9 28.9 ± 26.6 27.1 ± 26.3

C, Cesarean section, V, vaginal delivery, N, natural, F, formula; P1, meconium, P2, 7th day, P3, 1st month, P4, 6th month, P5, 12th month, P6, 24th month