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Table 1 Demography by the three definitions of generalized joint hypermobility (GJH)

From: Generalized joint hypermobility in childhood is a possible risk for the development of joint pain in adolescence: a cohort study

  GJH4 GJH5 GJH6
Variable < GJH4 ≥ GJH4 p-value < GJH5 ≥ GJH5 p-value < GJH6 ≥ GJH6 p-value
(n = 171) (n = 130)   (n = 217) (n = 84)   (n = 237) (n = 64)
Age, median (range) 14 (13–15) 14 (13–15) 0.13 14 (13–15) 14 (13–15) 0.24 14 (13–15) 14 (13–15) 0.61
1BMI, mean (sd) 20.02 (2.62) 20.57 (2.77) 0.08 19.95 (2.52) 21.03 (2.98) 0.004* 20.03 (2.62) 21.07 (2.85) 0.006*
Gender, no. of girls, n (%) 75 (43.9) 73 (56.2) 0.04 a, * 100 (46.1) 48 (57.1) 0.09a 109 (46.0) 39 (60.9) 0.03 a, *
Musculoskeletal health, n (%)          
Arthralgia in 1–3 joints (> 3 months), (n = 301) 9 (5.3) 10 (7.7) 0.39a 12 (5.5) 7 (8.3) 0.37a 14 (5.9) 5 (7.8) 0.58a
Arthralgia in >4 joints (> 3 months), (n = 300) 4 (2.3) 8 (6.2) 0.14b 6 (2.8) 6 (7.1) 0.08a 7 (3.0) 5 (7.8) 0.08a
2Dislocation/subluxation, (n = 293) 10 (5.8) 9 (6.9) 0.70a 11 (5.1) 8 (9.5) 0.15a 13 (5.5) 6 (9.4) 0.26a
3Soft tissue rheumatism, (n = 293) 5 (2.9) 5 (3.8) 0.66a 6 (2.8) 4 (4.8) 0.47b 8 (3.4) 2 (3.1) 1.00b
  1. 1BMI = Body Mass Index (calculated as = bodyweight in kg/ height in m*height in m) 2Dislocation/subluxation is based on the question: ‘Have you experienced dislocation or subluxation in one joint’. 3Soft tissue rheumatism is based on the question: ‘Have you experienced epicondylitis, tenosynovitis or bursitis?’
  2. Methods/Hypothesis testing: Age: Mann Whitney u-test; BMI (body mass index): independent t-test; Gender, musculoskeletal health: X 2 , aPearson’s chi-square; bFishers exact test. Significant difference between groups are marked with *and written with bold.