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Table 1 Participant characteristics and disease statuses of those included from the 3 studies

From: Relationship of joint hypermobility with low Back pain and lumbar spine osteoarthritis

  Generalized OA
n (%) or mean (SD)
n = 1798
Genetics of Generalized OA
n (%) or mean (SD)
n = 1363
Johnston County OA Project
n (%) or mean (SD)
n = 1911
Age, yrs 69.3 (8.4) 66.0 (10.0) 66.5 (10.1)
Women 1290 (71.8%) 1068 (78.4%) 1233 (64.5%)
African American 0 (0%) 0 (0%) 620 (32.4%)
Body mass index, kg/m2 27.5 (5.1) 29.1 (6.3) 30.9 (6.5)
Back injury 38 (2.1%) 34 (2.5%) 45 (2.4%)
Low back pain 681 (37.9%) 887 (65.1%) 767 (40.1%)
Beighton ≥4 197 (11.0%) 57 (4.2%) 122 (6.4%)
Trunk flexion maneuver 231 (12.9%) 94 (6.9%) 103 (5.4%)
Spine OA 1039 (57.8%) 791 (58.0%) 1136 (59.5%)
Facet OA 1333 (74.1%) 903 (66.3%) 1305 (68.3%)
Symptomatic spine OA 446 (24.8%) 556 (40.8%) 474 (24.8%)
Symptomatic facet OA 517 (28.8%) 598 (43.9%) 521 (27.3%)
  1. Facet OA = presence of facet joint OA at any lumbar spine level; OA = osteoarthritis; Spine OA = combination of at least mild disc space narrowing and presence of a mild osteophyte at the same lumbar level; SD = standard deviation