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Table 3 Stepwise logistic regression using persistence of significant post delivery back pain as dependent variable

From: Persistence of back pain symptoms after pregnancy and bone mineral density changes as measured by quantitative ultrasound - a two year longitudinal follow up study

Variable B S.E. Wald Significance Odds ratio 95% CI
Significant variables       
Weight Gain at 2 years post delivery -0.653 0.303 4.62 0.03 1.92 1.05 to 3.48
BMD change at 2 years post delivery -21.9 10.26 4.55 0.03 0.11 0.01 to 0.96
Excluded variables       
Age 0.0529 0.113 0.203 0.65 1.05 0.84 to1.32
Early pregnancy BMI -0.406 0.238 2.90 0.08 0.66 0.41 to 1.06
Early pregnancy fat percentage 0.131 0.125 1.09 0.29 1.14 0.89 to 1.45
Early pregnancy BMD 0.208 3.944 0.002 0.95 1.23 0.03 to 5.7
Weight gain in pregnancy -0.031 0.129 0.058 0.80 0.96 0.75 to 1.24
Fat gain in pregnancy -0.253 0.211 1.434 0.23 0.77 0.51 to 1.17
Pregnancy BMD loss 25.26 16.97 2.21 0.13 0.37 0.06 to 8.91
Fat change at 2 years post delivery -0.406 0.267 2.32 0.13 0.67 0.39 to 1.13
  1. CI = confidence interval