85(11):1320-6 Low back and pelvic pain is common during pregnancy and postpartum. This study assessed whether a group intervention program for pregnant women with pelvic girdle pain would have any effect on pain and daily function at 6 and 12 mo postpartum.Participants at 18 to 32 wk gestation with posterior pelvic pain or pain from the symphysis pubis were referred from the surrounding community. During a 3-yr period, 958 women were examined for inclusion, and 569 fulfilled the inclusion criteria: a positive posterior pelvic pain provocation (P4) test or positive symphysis pressure test; pelvic girdle pain caused by at least two of the following, e.g., walking 10 min, standing 10 min, climbing stairs 2 floors, or turning in bed; and a negative neurologic back examination. There were 275 in the intervention group and 285 controls. All patients completed a questionnaire about daily activities and function, work, previous health, and background variables. Pain was measured on a 10-point visual analog scale (VAS). Women in the intervention group participated in an education program in groups of five women, with one session for 2 h once a week for 4 consecutive weeks. The control patients were not offered any treatment but were free to seek advice or receive other treatment. The intervention included information on anatomy, ergonomics/body posture, exercises, and pain management; advice on movements of daily life; demonstration of a pelvic belt, crutches, and an easy-slide for turning in bed; and information about delivery and care of the pelvis in the puerperal period. The VAS, P4, and symphysis pressure test were repeated 6 and 12 mo postpartum. The mean gestational age at inclusion was about 24 wk, and mean onset of pelvic pain was at week 15; 33% of women were primigravida and 43% had low back pain earlier, not related to pregnancy. At the time of inclusion, 66% were on sick leave and 33% on partial sick leave. The groups did not differ with regard to the above variables or in demographic characteristics. At inclusion, 59% of the 958 women had a minimum of one positive provocation test, 41% had a negative test, and 9 dropped out; 26% had a combination of a positive symphysis pressure and P4 test, 20% had a positive symphysis pressure test only, and 54% a positive P4 test only. Pain intensity by VAS score decreased from a median of 6 at inclusion to 0 or 1 at 6 and 12 mo postpartum in both groups. The groups did not differ in VAS score, either during pregnancy or at any of the postpartum time points. At 6 mo postpartum, 57 intervention patients were lost to follow-up, as well as 76 controls; 55% in both groups had positive provocation tests. Further dropout at 12 mo was similar between groups. At 12 mo, 80% in the intervention group and 72%, in the control group had positive provocation tests; 90% of the intervention group self-evaluated the utility of participating in the treatment group (VAS 0-10), and 4% scored 0 to 4.9; 11% scored 5 to 6.9; and 75% between 7 and 10. Among the controls, 60% sought treatment...