Skip to main content

Table 4 Llikelihood ratios, sensitivities, and specificities for the three SBT groups' diagnostic performance in relation to identifying patients with high scores on three more comprehensive questionnaires

From: Feasibility of the STarT back screening tool in chiropractic clinics: a cross-sectional study of patients with low back pain

  Pretest risk of high scores, % (95% CI) Neg. LHR (95% CI) Pos. LHR (95% CI) Sensitivity % (95% CI) Specificity % (95% CI)
MDI 10 (8 - 14)     
Low risk   2.01 (1.63 - 2.48) .42 (.26 - .67) 27 (15 - 41) 37 (32 - 41)
Medium Risk   .82 (.65 - 1.04) 1.46 (1.01 - 2.11) 41 (27 - 56) 72 (68 - 76)
High Risk   .74 (.61 - .90) 3.83 (2.30 - 6.37) 33 (20 - 48) 92 (88 - 94)
FABQ 6 (4 - 8)     
Low risk   2.35 (1.96 - 2.81) .18 (.06 - .52) 11 (2 - 29) 38 (33 - 43)
Medium Risk   1.00 (.78 - 1.00 (.55 - 1.82) 30 (14 - 52) 70 (66 - 75)
High Risk   1.29) .44 (.28 - .70) 7.21 (4.63 - 11.2) 59 (39 - 78) 92 (89 - 94)
Catastrophising 15 (12 - 19)     
Low risk   2.10 (1.72 - 2.55) .41 (.28 - .61) 27 (17 - 39) 35 (30 - 40)
Medium Risk   .95 (.80 - 1.13) 1.12 (.78 - 1.63) 32 (22 - 45) 71 (66 - 76)
High Risk   .63 (.52 - .77) 6.67 (4.14 - 10.8) 41 (29 - 53) 94 (91 - 96)
  1. LHR: Likelihood ratio