Table 3.
Factors |
Preterm Cases (%) |
No Preterm (%) |
P value |
OR |
95% CI |
---|---|---|---|---|---|
N=181 | N=1445 | ||||
Induced abortion history |
|
|
|
|
|
· 0 |
61 (33.0) |
566 (39.0) |
|
1.0 |
1.0 |
· 1 |
64 (35.0) |
476 (32.0) |
0.28 |
1.3 |
0.85 – 1.84 |
· ≥ 2 |
56 (30.0) |
403 (27.0) |
0.23 |
1.3 |
0.86 – 1.93 |
Spontaneous abortion |
|
|
|
|
|
· 0 |
145 (80.1) |
1175 (81.3) |
|
1.0 |
1.0 |
· 1 |
27 (14.9) |
198 (10.3) |
0.7 |
1.1 |
0.70 – 1.74 |
· ≥ 2 |
9 (5.7) |
92 (4.9) |
0.6 |
0.8 |
0.37 – 1.66 |
Preterm delivery |
|
|
|
|
|
· Yes |
9 (5.0) |
41 (2.8) |
0.8 |
1.8 |
0.80 – 3.91 |
· No |
172 (95.0) |
1404 (97.2 ) |
|
1.0 |
1.0 |
Operative vaginal delivery |
|
|
|
|
|
· Yes |
11 (6.1) |
56 (3.9) |
0.2 |
1.0 |
1.0 |
· No | 170 (97) | 1389 (96.1) | 1.6 | 0.78 –3.24 |