Table 1.

Contingency table of results based on a threshold of ≥13 degrees classifying a patient as having high pelvic mobility when moving from standing to flexed-seated position. Values are counts of participants. Key: True positive (TP), false positive (FP), true negative (TN), false negative (FN).

	IMU ≥ 13 Degrees	IMU < 13 Degrees
Radiograph ≥ 13 degrees	TP = 11	FN = 2
Radiograph ≤ 13 degrees	FP = 1	TN = 19