Table 5

Discriminative analysis: Akaike information criterion (AIC), p-value and sensitivity/specificity of model variables for pain ratings
Model Discriminative analysis
Var. 1 Var. 2 Var. 3 Var. 4 Var. 5 AICa p value Sens/spec (%)
Back pain
prev. 6 month
  Observer A BKFO DSLL 41.84 0.008 94/47
  Observer B BKFO SB SLKB+LL DSLL DLL-ALE 42.89 0.012 89/67
at present
  Observer A SB SLKB+LL DLL-L 36.68 0.046 33/92
  Observer B SB 40.49 0.140 0/100
LE pain
prev. 6 month
  Observer A BKFO DLL-L 45.24 0.040 81/59
  Observer B SLKB+LL DLL-L 45.73 0.050 44/88
at present
  Observer A SLKB+LL DLL-L DLL-ALE 36.10 0.038 50/92
  Observer B DLL-ALE 36.10 0.034 0/100

Abbreviations: Sens, sensitivity; spec, specificity; LE, lower extremity; BKFO, Bent knee fall out; SB, Standing bow; SLKB+LL, Single leg small knee bend + lunge-lean; DLL-L Double leg lift-lower; DLL-ALE, Double leg lift -alternate leg extension; DSLL, Double straight leg lower.

a AIC, Akaike information criterion = 2k – 2L (k = number of variables; L = log likelihood).

Monnier et al.

Monnier et al. BMC Musculoskeletal Disorders 2012 13:263   doi:10.1186/1471-2474-13-263

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