Table 1.
Background characteristics
| |
Prolonged labour
a, b
|
Normal
a
labour |
Crude odds ratio |
|---|---|---|---|
| |
n = 180 |
n = 649 |
|
| n (%) | n (%) | (95% CI) | |
|
Socio-demographic background |
|
|
|
|
Age |
|
|
|
| <25 years |
19 (10.6) |
84 (13.0) |
1.3 (0.8-2.3) |
| 25-35 years |
144 (80.4) |
469 (72.6) |
1.0 Ref.c |
| >35 years |
16 (8.9) |
93 (14.4) |
0.7 (0.4-1.5) |
|
Previous children |
|
|
|
| Primipara |
133 (74.3) |
241 (37.3) |
4.8 (3.3-7.0)*** |
| Multipara |
46 (25.7) |
405 (62.7) |
1.0 Ref. |
|
Marital status |
|
|
|
| Living with partner |
175 (97.8) |
627 (97.1) |
1.0 Ref. |
| Not living with partner |
4 (2.2) |
19 (2.9) |
0.7 (0.2-2.2) |
|
Country of birth |
|
|
|
| Sweden |
175 (97.8) |
616 (95.4) |
1.0 Ref. |
| Other country |
4 (2.2) |
30 (4.6) |
0.5 (0.2-1.3) |
|
Education |
|
|
|
| Elementary school |
6 (3.4) |
25 (3.9) |
1.2 (0.5-3.0) |
| High school |
74 (41.3) |
6257(40.3) |
1.0 Ref. |
| College/university |
99 (55.3) |
355 (55.7) |
1.2 (0.5-2.9) |
|
Tobacco use in mid pregnancy (smoking/snuff) |
|
|
|
| Yes |
5 (2.8) |
42 (6.5) |
0.4 (0.1-1.1) |
| No |
174 (97.2) |
604 (93.5) |
1.0 Ref. |
|
Body Mass Index |
|
|
|
| <20 |
14 (8.3) |
71 (11.5) |
0.6 (0.3-1.2) |
| 20-25 |
80 (47.6) |
268 (43.2) |
1.0 Ref. |
| 25-30 |
64 (38.1) |
248 (40.0) |
0.8 (0.5-1.2) |
| 30- | 10 (6.0) | 33 (5.3) | 1.0 (0.4-2.1) |
aProlonged labour includes women who experienced a prolonged labour with and without diagnosis.
bNumber may not add to 100% due to missing internal values.
cReference = Women not exposed to the studied variable.
***p < 0.001.