Table 3.
Comparisons of the characteristics 3 months postpartum between the women included in the multiple linear regression analysis and the women that were excluded/dropped-out
| Variables | Women not included in the regression model (n = 38) | Women included in the regression model (n = 50) | P |
|---|---|---|---|
| Age (years) median (25th, 75th percentile) | 32 (29, 35) | 31 (28, 33) | 0.126 |
| EuroQol 5D scorea, median (25th, 75th percentile) | 0.76 (0.73, 0.80) | 0.80 (0.73, 0.80) | 0.941 |
| EQ VAS (mm)b, median (25th, 75th percentile) | 75 (67, 80) | 80 (70, 90) | 0.186 |
| Oswestry Disability Index (%) median (25th, 75th percentile) | 20 (14, 30) | 16 (10, 24) | 0.012 |
| Pain intensity at the moment measured with VAS (mm)c, median (25th, 75th percentile) | 35 (22, 48) | 31 (13, 52) | 0.452 |
| Pain localization measured with pain drawings (no. of cm2), median (25th, 75th percentile) | 9 (5, 13) | 9 (6, 12) | 0.739 |
| Gait speed (m/s), mean (SD) | 1.3 (0.2) | 1.3 (0.2) | 0.798 |
| Hip extensor strength (Newton)d, mean (SD) | 265 (103) | 265 (96) | 0.982 |
| Trunk flexor endurance (s), mean (SD) | 31 (25) | 33 (31) | 0.775 |
| Urinary leakage, n (%) | |||
| Yes | 9 (25) | 14 (28) | 0.757 |
| No | 27 (75) | 36 (72) | |
| Activity level last 3 months n (%) | |||
| Manage all household duties, including gardening and light physical activity | 29 (83) | 39 (78) | 0.582 |
| The afore-mentioned activities + exercises at increasing intensity | 6 (17) | 11 (22) | |
| ASLR testen (%) | |||
| 0 | 20 (56) | 32 (64) | 0.624 |
| ≥1 | 16 (44) | 18 (36) | |
| Group n (%) | |||
| SSE | 16 (42) | 18 (36) | 0.560 |
| Reference | 22 (58) | 32 (64) | |
| Symptom satisfaction | |||
| Delighted to mostly satisfied n (%) | 11 (31) | 17 (34) | 0.737 |
| Mixed feelings to terrible | 25 (69) | 33 (66) | |
| Expectations on treatment n (%) | |||
| Completely restored or quite improved | 34 (97) | 43 (86) | 0.083 |
| Not improved but get some relief of the symptoms or no expectations of being restored | 1 (3) | 7 (14) | |
| Well-being n (%) | |||
| Very well to well | 25 (69) | 37 (74) | 0.642 |
| Fairly well good to very bad | 11 (31) | 13 (26) | |
| Pain frequency n (%) | |||
| Always, daily to several times/week | 34 (94) | 38 (76) | 0.022 |
| Occasionally to never | 2 (6) | 12 (24) | |
VAS visual analogue scale, SSE specific stabilizing exercises, ASLRtest active straight leg raise test
a1–(−0.59), in which −0.59 is the lowest health-related quality of life
b0–100 in which 0 is the lowest thinkable health
c0–100 mm, in which 100 is the highest thinkable pain
dThe highest value for either the left or right leg is presented
e0 = no problems with performing the ASLR test; 1–6 = problems of various degree to perform the ASLR test
fCombined pain = pelvic girdle pain in combination with lumbar pain