Table 1 Maternal characteristics in the second live birth in Denmark, 1982–2010
First CS | |||
|---|---|---|---|
Elective repeat CS | Trial of labour after CS | Total | |
Maternal characteristics of the second delivery | |||
Age in years, <20 | 24 (0%) | 133 (0%) | 157 (0%) |
20–25 | 1,920 (9%) | 5,655 (14%) | 7,575 (12%) |
26–30 | 6,997 (33%) | 16,582 (41%) | 23,579 (38%) |
31–35 | 8,096 (39%) | 14,349 (35%) | 22,445 (36%) |
36–40 | 3,423 (16%) | 3,660 (9%) | 7,083 (11%) |
41+ | 481 (2%) | 306 (1%) | 787 (1%) |
Origin, Denmark | 18,685 (89%) | 36,757 (90%) | 55,442 (90%) |
Other | 2,183 (10%) | 3,834 (9%) | 6,017 (10%) |
Unknown | 73 (0%) | 94 (0%) | 167 (0%) |
Marital status, Married | 7,514 (36%) | 13,567 (33%) | 21,081 (34%) |
Divorced/separated/widowed | 573 (3%) | 748 (2%) | 1,321 (2%) |
Co-habiting | 12,633 (60%) | 25,917 (64%) | 38,550 (63%) |
Unknown | 221 (1%) | 453 (1%) | 674 (1%) |
Educational attainment, Primary | 4,496 (21%) | 9,817 (24%) | 14,313 (23%) |
High school | 10,193 (49%) | 20,057 (49%) | 30,250 (49%) |
Third level degree | 4,183 (20%) | 7,432 (18%) | 11,615 (19%) |
Masters/PhD | 1,447 (7%) | 2,183 (5%) | 3,630 (6%) |
Unknown | 622 (3%) | 1,196 (3%) | 1,818 (3%) |
Mother’s gross income (quartiles), 25 | 2,997 (14%) | 5,766 (14%) | 8,763 (14%) |
50 | 3,954 (19%) | 7,789 (19%) | 11,743 (19%) |
75 | 9,513 (45%) | 19,299 (47%) | 28,812 (47%) |
100 | 4,339 (21%) | 7,514 (18%) | 11,853 (19%) |
Unknown | 138 (1%) | 317 (1%) | 455 (1%) |
aSmoker, No | 14,387 (82%) | 25,814 (78%) | 40,201 (79%) |
Yes | 2,665 (15%) | 6,733 (20%) | 9,398 (18%) |
Unknown | 566 (3%) | 715 (2%) | 1,281 (3%) |
Characteristic of the second delivery | |||
Father’s gross income (quartiles), 25 | 1,497 (7%) | 3,156 (8%) | 4,653 (8%) |
50 | 2,264 (11%) | 4,765 (12%) | 7,029 (11%) |
75 | 6,266 (30%) | 12,702 (31%) | 18,968 (31%) |
100 | 10,582 (51%) | 19,412 (48%) | 29,994 (49%) |
Unknown | 332 (2%) | 650 (2%) | 982 (2%) |
bBMI (kg/m2) <18.5 | 523 (5%) | 638 (5%) | 1,161 (5%) |
18.5–25 | 5,849 (55%) | 7,412 (62%) | 13,261 (58%) |
26–30 | 2,198 (21%) | 2,092 (18%) | 4,290 (19%) |
31–35 | 1,064 (10%) | 753 (6%) | 1,817 (8%) |
36+ | 643 (6%) | 347 (3%) | 990 (4%) |
Unknown | 439 (4%) | 714 (6%) | 1,153 (5%) |
cPreeclampsia, eclampsia | 342 (2%) | 613 (2%) | 955 (2%) |
dFetal distress | 98 (1%) | 6,358 (22%) | 6,456 (14%) |
eGestational diabetes | 645 (4%) | 504 (2%) | 1,149 (3%) |
fHypertension | 203 (1%) | 337 (1%) | 540 (1%) |
Previous stillbirth | 494 (2%) | 371 (1%) | 865 (1%) |
Previous miscarriage | 3,288 (16%) | 6,675 (16%) | 9,963 (16%) |
Previous ectopic pregnancy | 863 (4%) | 1,681 (4%) | 2,544 (4%) |