Table 2 Characteristics of the training set and test set

No. of images

127

40

–

32

11

GA*

36.49 ± 0.85

34.37 ± 2.42

< 0.0001

36.78 ± 1.64

34.53 ± 2.37

< 0.0001

Birth weight (g)*

3096 ± 385

2978 ± 490

< 0.0001

3145 ± 423

3024 ± 540

< 0.0001

GDM

< 0.005

0.06

Yes

48 (37.80%)

26 (65.00%)

–

10 (31.25%)

7 (63.64%)

–

No

79 (62.20%)

14 (35.00%)

–

22 (68.75%)

4 (36.36%)

–

Mode of delivery

0.35

0.94

Spontaneous vaginal delivery

56 (44.09%)

21 (52.50%)

–

15 (46.88%)

5 (45.45%)

–

Caesarean delivery

71 (55.91%)

19 (47.50%)

–

17 (53.12%)

6 (54.55%)

–

Sex of newborn

0.87

0.43

Female

59 (46.46%)

18 (45.00%)

–

16 (50.00%)

7 (63.64%)

–

Male

68 (53.54%)

22 (55.00%)

–

16 (50.00%)

4 (36.36%)

–

Apgar

–

–

5 min ≤ 7

0(0.00%)

4 (10.00%)

–

0 (0.00%)

0 (0.00%)

–

5 min > 7

1 27 (100.00%)

36 (90.00%)

–

32 (100.00%)

11 (100.00%)

–