Table 1.
Characteristics of the studied women
| Without LBP (n = 242) | LP (n = 68) | PPP (n = 142) | CP (n = 32) | P value | |
|---|---|---|---|---|---|
| Age (Mean ± SD) (years) | 27.4 ± 4.5 | 26.8 ± 4.2 | 27.8 ± 4.7 | 28.4 ± 3.9 | 0.297 |
| BMI (Mean ± SD) (kg/m2) | 26.0 ± 1.2 | 26.2 ± 1.3 | 25.7 ± 1.8 | 25.8 ± 1.6 | 0.079 |
| Educational Levels (≥ high school/university) (N,%) | 132(54.5%) | 32(47.1%) | 80(56.3%) | 14(43.8%) | 0405 |
| Household annual income (Dollars) | 1400.5 ± 600.3 | 1498.5 ± 580.3 | 1540.5 ± 612.3 | 1389.5 ± 670.3 | 0.140 |
| Caesarean delivery (N, %) | 26(10.7%) | 9(13.2%) | 18(12.7%) | 6(18.8%) | 0.609 |
| Breast-feeding (N, %) | 212(87.6%) | 58(85.3%) | 122(85.9%) | 24(75%) | 0.290 |
| Unexpected gender of the baby (N, %) | 25(10.3%) | 9(13.2%) | 18 (12.7%) | 5(15.6%) | 0.755 |
| Primigravida (N, %) | 168(69.4%) | 48(70.6%) | 103(72.5%) | 22(68.9%) | 0.927 |
| Sick leave ≥ 90 days (N, %) | 32(13.2%) | 13(19.1%) | 23(16.2%) | 4(12.5%) | 0.610 |
| Large amount of physical demand (Twisting/lifting movements) (N, %) | 52(21.5%) | 30(44.1%) | 34(23.9%) | 9(28.1%) | 0.002* |
| LBP in previous pregnancy (N, %) | 80(33.1%) | 39(57.4%) | 76(53.5%) | 19(59.4%) | < 0.001* |
P values from ANOVA, Kruskal-Wallis or Chi test. All original 2-tailed P values were multiplied by 6 (Bonferroni correction). *indicates statistically significant. LBP Low Back Pain, LP Lumbar Pain, PPP Posterior Pelvic Pain, CP Combined Pain, SD Standard Deviation, BMI Body Mass Index