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Table 3 Differences between groups of women with and without self-reported PGP, and women with severe and less severe PGP on the SF-36 and NHP, using t-tests, Mann-Whitney U tests and Hodges-Lehman estimate of difference in the median of the 2 groups

From: The association between pregnancy, pelvic girdle pain and health-related quality of life – a comparison of two instruments

Instrument

Without PGP (n = 104)

With PGP (n = 179)

p-value

Mean difference [95%CI]

Less severe PGP (n = 155)

Severe PGP (n = 24)

p-value

Mean difference [95%CI]

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

SF-36 (0–100; 100 best)

 Physical functioning

78.0 (13.0)

60.3 (21.3)

0.001

−17.7[−21.5,-14.1]

63.5 (20.1)

39.2 (16.7)

0.001

−24.3 [−31.5, − 16.7]

 Role Physical

56.1 (42.6)

23.6 (34.2)

0.001

−32.5[−41.8,-23.0]

25.8 (35.2)

9.3 (23.1)

0.019

−19.5 [−26.3, −3.4]

 Role Emotional

87.1 (29.2)

85.9 (31.0)

0.747

−1.2 [−8.4. 6.7]

87.1 (30.0)

77.9 (36.3)

0.110

−9.2 [−27.1, 2.8]

 Bodily pain

74.3 (18.6)

44.0 (18.3)

0.001

−29.3[−34.6,-25.9]

46.8 (17.7)

33.4 (18.7)

0.001

−13.4 [−21.3,-5.3]

 Social functioning

50.1 (5.6)

48.6 (7.8)

0.323

−1.5 [−3.0, 0.6]

48.1 (7.6)

52.1 (8.8)

0.049

4.0 [0.6, 8.1]

 Mental health

80.9 (10.1)

78.7 (12.2)

0.080

−2.2 [−0.2, 5.3]

79.0 (11.9)

76.5 (14.1)

0.516

−2.5 [−9.3, 3.0]

 Vitality

56.4 (9.9)

52.3 (10.9)

0.001

−4.1 [−6.6, −1.8]

52.5 (11.1)

50.9 (9.4)

0.378

−1.6 [−5.8, 2.5]

 General health perceptions

53.4 (10.9)

56.4 (11.0)

0.020

3.0 [0.04, 5.4]

55.5 (10.5)

61.9 (13.0)

0.039

6.4 [0.5, 11.4]

 

Median (IQR)

Median (IQR)

p-value

Intergroup comparison

Median [95% CI]a

Median (IQR)

Median (IQR)

p-value

Intergroup comparison

Median [95% CI]a

NHP (0–100; 0 best)

 Emotional reactions

0.0 (0.0, 6.5)

0.0 (0.0, 11.8)

0.016

0.0 [0.0, 0.0]

0.0 (0.0, 8.6)

8.4 (0.0, 14.3)

0.053

0.0 [0.0, 8.2]

 Sleep

11.1 (0.0, 33.1)

22.0 (0.0, 22.0)

0.002

2.4 [0.0, 11.1]

22.0 (0.0, 41.7)

33.1 (22.0, 62.9)

0.025

11.1 [0.0, 22.0]

 Energy

23.8 (0.0, 36.8)

23.8 (23.8, 60.6)

< 0.001

23.8 [13.0, 23.8]

23.8 (23.8, 60.6)

60.5 (23.7, 90.8)

0.006

23.8 [0.0, 36.8]

 Pain

0.0 (0.0, 60.0)

38.0 (19.3, 38.3)

< 0.001

36.2 [28.2, 38.1]

37.4 (10.9, 54.7)

63.5 (41.7, 77.2)

< 0.001

26.1 [15.6, 36.5]

 Physical mobility

10.1 (0.0, 10.5)

20.7 (10.1, 42.9)

< 0.001

17.5 [10.5, 20.6]

20.6 (10.1, 38.1)

45.9 (35.5, 53.2)

< 0.001

24.2 [15.1, 31.7]

 Social isolation

0.0 (0.0, 0.0)

0.0 (0.0, 0.0)

0.001

0.0 [0.0, 0.0]

0.0 (0.0, 0.0)

0.0 (0.0, 24.9)

0.299

0.0 [0.0, 0.0]

  1. PGP pelvic girdle pain, SD standard deviation, IQR interquartile range, a Hodges-Lehman estimate of difference in the median of the 2 groups with 95% CI