Table 2 Comparison of back pain and daily activity restrictions between low bone mass postmenopausal women with and without hypovitaminosis D

Number of participants

2272

7033

-

-

Back pain in the previous 6 months

∙Yes

1580 (69.5%)

4704 (66.9%)

0.022

1.14 (1.03 – 1.26)

∙No

682 (30.0%)

2310 (32.8%)

∙Don’t know

10 (0.4%)

19 (0.3%)

Pain frequency

∙All the time

193 (8.5%)

475 (6.8%)

0.004

1.24 (1.03 – 1.48)

∙Almost all the time

330 (14.6%)

1012 (14.4%)

0.96 (0.83 – 1.11)

∙Sometimes

809 (35.7%)

2366 (33.7%)

1.04 (0.92 – 1.16)

∙Rarely

249 (11.0%)

851 (12.1%)

0.85 (0.72 – 0.99)

∙Don’t know

682 (30.1%)

2310 (32.9%)

Pain severity

∙Very weak

67 (3.0%)

266 (3.8%)

0.74 (0.56 – 0.98)

∙Weak

363 (16.0%)

1087 (15.5%)

0.001

0.99 (0.86 – 1.14)

∙Moderate

783 (34.6%)

2439 (34.8%)

0.91 (0.81 – 1.02)

∙Severe

322 (14.2%)

807 (11.5%)

1.23 (1.07 – 1.43)

∙Very severe

46 (2.0%)

104 (1.5%)

1.33 (0.92 – 1.91)

∙Don’t know

682 (30.1%)

2310 (32.9%)

Daily activity restriction in the previous 6 months

∙Yes

391 (17.2%)

983 (14.0%)

0.001

1.28 (1.12 – 1.46)

∙No

1869 (82.3%)

6006 (85.4%)

∙Don’t know

12 (0.5%)

42 (0.6%)