Table 2.
Characteristics of women with PGP or PGP plus LBP and women with no PGP at follow-up
| Variable | PGP or PGP + LBP (n = 37) | No PGP (n = 290) | p-value |
|---|---|---|---|
| Age, years | 37.7 (4.9) | 39.4 (5.7) | 0.059 |
| 38.0 (29.0; 49.0) | 40.0 (24.0; 54.0) | ||
| n = 37 | n = 290 | ||
| Time from randomisation to follow-up (years) | 7.35 (4.02) | 8.41 (3.80) | 0.27 |
| 5.00 (2.00; 12.00) | 11.00 (1.00; 13.00) | ||
| Working hours/week | 35.7 (7.6) | 37.1 (6.5) | 0.032 |
| 38.0 (19.0; 60.0) | 40.0 (1.0; 49.0) | ||
| n = 29 | n = 221 | ||
| Marital status | |||
| Single | 3 (8.6 %) | 24 (9.5 %) | |
| Married/cohabitating | 32 (91.4 %) | 229 (90.5 %) | 1.00 |
| Number of pregnancies | |||
| 1 | 4 (12.1 %) | 18 (7.2 %) | |
| 2 | 8 (24.2 %) | 89 (35.6 %) | |
| 3 | 15 (45.5 %) | 69 (27.6 %) | |
| 4 | 6 (18.2 %) | 73 (29.2 %) | |
| 5 | 0 (0.0 %) | 1 (0.4 %) | 0.56 |
| Parity | |||
| 1 | 5 (14.7 %) | 30 (12.0 %) | |
| 2 | 20 (58.8 %) | 139 (55.4 %) | |
| 3 | 8 (23.5 %) | 75 (29.9 %) | |
| 4 | 1 (2.9 %) | 6 (2.4 %) | |
| 5 | 0 (0.0 %) | 1 (0.4 %) | 0.52 |
| Caesarean section | 4 (14.3 %) | 48 (19.0 %) | 0.76 |
| Birthweight last born baby, grams | 3633 (492) | 3692 (490) | 0.43 |
| 3548 (2995; 4615) | 3700 (2129; 5000) | ||
| n = 30 | n = 274 | ||
| Sex of last born baby, boy | 15 (50 %) | 140 (51 %) | 0.925 |
| n = 30 | n = 275 |
For comparison between groups Fisher’s Exact test was used for dichotomous variables and the Mantel-Haenszel Chi Square Exact test was usedfor ordered categorical variables and the Mantel-Haenszel Chi Square test was used for ordered categorical variables and Chi Square Exact test was used for non-ordered categorical variables and Chi Square test was used for non-ordered categorical variables and the Mann-Whitney
U-test was used for continuous variables
PGP pelvic girdle pain, LBP Low back pain, For categorical variables n (%) is presented. For continuous variables Mean (SD) / Median (Min; Max) / n = is presented