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Table 3 Evaluation of validity of the Swedish 5PQ

From: Self-rated joint hypermobility: the five-part questionnaire evaluated in a Swedish non-clinical adult population

5PQ scoreSensitivity (%) (95% CI)Specificity (%) (95% CI)PPV (%) (95% CI)NPV (%) (95% CI)
BS according to present hypermobility with an age-dependent cut-off scorea
= 0/5100.00 (85.18, 100.00)0.00 (0.00, 1.40)8.10 (8.10, 8.10)
≥ 1/595.65 (78.05, 99.89)34.10 (28.37, 40.20)11.34 (10.16, 12.64)98.89 (92.85, 99.84)
≥ 2/5b91.30 (71.96, 98.93)74.71 (68.98, 79.87)24.14 (19.96, 28.88)98.98 (96.28, 99.73)
≥ 3/556.52 (34.49, 76.81)91.57 (87.52, 94.64)37.14 (25.67, 50.27)95.98 (93.74, 97.45)
≥ 4/530.43 (13.21, 52.92)97.32 (94.55, 98.92)50.00 (27.75, 72.25)94.07 (92.37, 95.42)
= 5/50.00 (0.00, 14.82)99.62 (97.88, 99.99)091.87 (91.82, 91.93)
BS according to present hypermobility ≥ 4/9a
= 0/5100.00 (92.45, 100.00)0.00 (0.00, 1.54)16.55 (16.55, 16.55)
≥ 1/585.11 (71.69, 93.80)35.02 (28.96, 41.46)20.62 (18.24, 23.21)92.22 (85.42, 96.00)
≥ 2/5b72.34 (57.36, 84.38)77.64 (71.79, 82.78)39.08 (32.31, 46.30)93.40 (89.87, 95.76)
≥ 3/542.55 (28.26, 57.82)93.67 (89.78, 96.41)57.14 (42.45, 70.67)89.16 (86.51, 91.33)
≥ 4/517.02 (7.65, 30.81)97.47 (94.57, 99.07)57.14 (32.66, 78.56)85.56 (83.86, 87.10)
= 5/50.00 (0.00, 7.55)99.58 (97.67, 99.99)083.39 (83.28, 83.51)
  1. 5PQ The Five-part questionnaire on hypermobility
  2. BS Beighton Score
  3. PPV Positive predictive value
  4. NPV Negative predictive value
  5. a The Swedish 5PQ was tested against two different criteria of the reference standard test: 1) a present Beighton Score with an age-dependent cut-off of ≥5/9 for individuals 18–50 years and ≥ 4/9 for individuals > 50 years and 2) a present BS with the traditional cut-off of ≥4/9
  6. b The recommended cut-off score for generalised joint hypermobility on the 5PQ [4]