| Characteristics |
|
% |
N |
|
% |
N |
|
% |
N |
|
Age years, mean (SD) |
29.2 (4.96) |
|
44 783 |
31.6 (4.65) |
|
27 707 |
34.1 (4.63) |
|
12 872 |
|
Maternal height cm mean (SD) |
166.6 (6.43) |
|
44 358 |
166.4 (6.48) |
|
27 480 |
165.5 (6.48) |
|
12 754 |
|
BMI. kg/m2 at first visit antenatal clinic |
23 (3.94) |
|
43 132 |
24 (4.35) |
|
26 666 |
25 (4.68) |
|
12 424 |
| Family situation |
|
|
|
|
|
|
|
|
|
| Single |
|
2.3 |
1 044 |
|
1.2 |
323 |
|
2.4 |
305 |
| Co-habitant |
|
90.3 |
40 454 |
|
95.2 |
26 403 |
|
92.5 |
11 902 |
| Missing |
|
7.4 |
3 315 |
|
3.6 |
994 |
|
5.2 |
666 |
| Amniotic membranes status at admisson |
|
|
|
|
|
|
|
|
|
| Intact |
|
65.8 |
29 494 |
|
75.6 |
20 946 |
|
76.4 |
9 840 |
| Ruptured |
|
32.2 |
14 443 |
|
22.6 |
6 259 |
|
21.7 |
2 798 |
| Missing |
|
2.0 |
876 |
|
1.9 |
517 |
|
1.8 |
235 |
|
Cx* dilation at admission median 10th,90th) |
5 (3,8) |
|
44 813 |
5 (3,8) |
|
27 722 |
5 (3,8) |
|
12 873 |
|
Cx* exams during labor median (10th,90th) |
4 (2,7) |
|
44 813 |
3 (2,7) |
|
27 722 |
3 (2,5) |
|
12 873 |
|
Oxytocin (%) |
|
|
|
|
|
|
|
|
|
| No |
|
50.9 |
22 830 |
|
78.6 |
21 779 |
|
76.3 |
9 817 |
| Yes |
|
49.1 |
21 983 |
|
21.4 |
5 943 |
|
23.7 |
3 056 |
|
Epidural (%) |
|
|
|
|
|
|
|
|
|
| No |
|
35.5 |
15 896 |
|
67.4 |
18 688 |
|
77.1 |
9 924 |
| Yes |
|
64.5 |
28 917 |
|
32.6 |
9 034 |
|
22.9 |
2 949 |
|
Mode of birth (%) |
|
|
|
|
|
|
|
|
|
| Non-instrumental vaginal birth |
|
81.4 |
36 465 |
|
96.9 |
26 865 |
|
96.5 |
12 427 |
| Instrumental delivery |
|
18.6 |
8 348 |
|
3.1 |
857 |
|
3.5 |
446 |
|
Gestational length at birth mean (SD) |
40.1 (1.09) |
|
44 813 |
40.0 (1.07) |
|
27 722 |
39.9 (1.12) |
|
12 873 |
|
Birth weight in grams mean (SD) |
3 474 (437.8) |
|
44 788 |
3 640 (460.37) |
|
27 709 |
3 666 (483.13) |
|
12 868 |
|
Head circumference in cm mean (SD) |
34 (1.73) |
|
44 648 |
35 (1.74) |
|
27 656 |
35 (1.68) |
|
12 835 |
|
Fetal position (%) |
|
|
|
|
|
|
|
|
|
| Occiput anterior |
|
96.8 |
43 390 |
|
96.3 |
27 704 |
|
96.5 |
12 427 |
| Occiput posterior |
|
3.2 |
1 423 |
|
3.7 |
1 018 |
|
3.5 |
446 |
