Table 2.

Contingency table of the proportions of spinal or extremity source of symptoms in each region.

Regions	Extremity Source Frequency (%)*	Spinal Source Frequency (%)*	Total
Hip	9 (29.0%)	22 (71.0%)	31
Thigh/leg	5 (27.8%)	13 (72.2%)	18
Knee	58 (74.4%)	20 (25.6%)	78
Ankle/foot	34 (70.8%)	14 (29.2%)	48
Shoulder	44 (52.4%)	40 (47.6%)	84
Arm/forearm	2 (16.7%)	10 (83.3%)	12
Elbow	14 (56.0%)	11 (44.0%)	25
Wrist/hand	16 (61.5%)	10 (38.5%)	26
Total	182 (56.5%)	140 (43.5%)	322 (100%)

Note: *Percentages represent the percentage of spinal or extremity source within each region.