Table 4 Associations between Pelvic Girdle Pain (PGP) (yes/no) and risk factors at gestation week 28, presented with crude and adjusted odds ratios (OR) with 95% confidence interval (CI). Two final models are presented: in Model 1 the focus is on the association between Ethnicity, PGP and parity. In Model 2 the focus is on risk factors for PGP

Ethnicity

Western (290)

Reference

0.01

Reference

0.123

-

South Asia (178)

1.7 (1.2, 2.5)

1.5 (0.98, 2.2)

Middle East (109)

1.8 (1.2, 1.9)

1.7 (0.98, 2.7)

Mixed ethnic group (129)

1.2 (0.8, 1.8)

1.1 (0.72, 1.7)

Parity

Nulliparous (326)

Reference

0.03

Reference

0.014

-

-

Primiparous (241)

1.3 (0.9, 1.9)

1.4 (1.01, 2.0)

Multiparous (139)

1.7 (1.1, 2.6)

1.9 (1.2, 3.1)

PGP locations in GW15

No pain (410)

Reference

<0.001

Reference

<0.001

Symphysis pain (59)

2.6 (1.5, 4.8)

3.0 (1.6, 5.5)

Posterior PGP (107)

2.7 (1.7, 4.6)

2.8 (1.8, 4.5)

Combined symphysis and posterior PGP (130)

6.9 (4.1, 11.8)

7.4 (4.2, 13.0)

Self-rated health in GW15

Very good (274)

Reference

0.002

-

-

Good (357)

2.6 (1.5, 4.7)

Poor, not really good (75)

1.4 (1.03, 1.9)

Physical activity level GW15

Unchanged from pre-pregnancy (174)

Reference

0.02

Reference

0.013

Less active (506)

1.5 (1.1,2.2)

1.6 (1.1, 2.3)

More active (26)

0.8 (0.4, 1.7)

0.7 (0.3, 1.7)