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Table 4

Scoring tool based on model (i) for clinical assessment items and corresponding predicted probability of sciatica.
Variable in the modelDoes the patient:Score
Subjective sensory changesReport any pins and needles or numbness in the involved lower limb1
Below knee painReport pain below the knee2
Leg pain worse than back painReport that their leg pain is worse than their back pain2
Neural Tension tests
Have a positive straight leg raise test and/or femoral nerve test and/or slump test3
Neurological deficit
Have any myotome/ reflex or sensory deficit in the involved lower limb2
Sum Score….
Sum Score012345678910
N3619192021472941612576
Observed Sciatica (%)311115067858610097100100
Mean predicted probability of Sciatica (%)4919426383939699100100