Table 2 Summary of the participants’ birth outcomes

Delivery period^a

 Preterm birth (< 37 weeks)

4 (2.6)

2 (3.0)

2 (2.3)

0.6146

 Full-term birth (37 ≤ GA < 41 weeks)

147 (96.7)

63 (95.5)

84 (97.7)

 Post-term birth (≥ 42 weeks)

1 (0.7)

1 (1.5)

0 (0.0)

Average birth weight(g)^b

3210.5 ± 529.6

3303.0 ± 511.7

3138.7 ± 535.1

0.0570

Birth weight^b

 Normal (≤ 2500 g)

142 (94.0)

63 (95.5)

79 (92.9)

0.3696

 Low birth weight (2000 g ≤ BW < 2500 g)

6 (4.0)

3 (4.5)

3 (3.5)

 Very low birth weight (< 2000 g)

3 (2.0)

0 (0.0)

3 (3.5)

Average birth length (cm)^c

50.9 ± 1.4

51.1 ± 1.3

50.7 ± 1.5

0.1295