Table 4.
Association between factors in early pregnancy and back pain induced in pregnancy persistent post partum
| |
Crude |
Adjusted |
||||
|---|---|---|---|---|---|---|
| Characteristic | OR | CI | p value | OR | CI | p value |
| AA in early pregnancy (°) |
1.09 |
1.01-1.17 |
0.02 |
1.15 |
1.05-1.26 |
0.003 |
| Age (yr) |
1.07 |
0.96-1.19 |
0.25 |
1.02 |
0.89-1.17 |
0.81 |
| Body mass index (kg/m2) |
1.15 |
0.99-1.33 |
0.06 |
1.18 |
0.99.1.41 |
0.07 |
| Cigarette smoking (%) |
0.48 |
0.12-1.92 |
0.30 |
0.22 |
0.04-1.28 |
0.09 |
| No. of previous pregnancies |
2.34 |
1.37-3.98 |
<0.0001 |
3.24 |
1.57-6.68 |
0.002 |
| Previous back pain (%) | 0.59 | 0.21-1.67 | 0.32 | 0.68 | 0.21-2.20 | 0.52 |
AA = Passive abduction angle of the left fourth finger. OR = odds ratio. CI = 95% confidence interval.
Legend: Association between factors measured in early pregnancy on reported back pain with onset during present pregnancy and persisting 3 months post partum in several univariate and one multiple logistic regression analysis (n = 167). The abduction angle of the left fourth finger in early pregnancy and the number of previous pregnancies were significantly and independently associated to the incidence of back pain.