Intratherapist Reliability in the Rating of Scapula Posture in Multiple Planes of Reference

Table 3

Agreement between test and retest assessments including observed agreement, expected agreement, kappa, prevalence index (PI), bias index (BI), and prevalence adjusted bias adjusted kappa (PABAK).

Force moment and plane	Observed agreement	Expected agreement	kappa	PI	BI	PABAK
Scapula
Rest	82%	61%	0.54	0.48	0.18	0.60
Flexion	81%	57%	0.56	0.37	0.19	0.61
Abduction	59%	49%	0.20	0.13	0.41	0.18
External rotation	70%	61%	0.23	0.50	0.30	0.24
Sagittal
Rest	69%	51%	0.36	0.17	0.31	0.34
Flexion	77%	52%	0.52	0.21	0.23	0.51
Abduction	75%	51%	0.49	0.17	0.25	0.47
External rotation	73%	61%	0.31	0.47	0.27	0.33
Transverse
Rest	82%	58%	0.58	0.40	0.18	0.63
Flexion	86%	63%	0.62	0.52	0.14	0.70
Abduction	80%	54%	0.54	0.29	0.21	0.57
External rotation	75%	54%	0.46	0.29	0.25	0.47
Horizontal
Rest	87%	84%	0.18	0.83	0.13	0.18
Flexion	87%	84%	0.17	0.83	0.13	0.18
Abduction	85%	83%	0.13	0.81	0.15	0.13
External rotation	86%	84%	0.15	0.82	0.14	0.15
Vertical
Rest	82%	72%	0.35	0.68	0.18	0.37
Flexion	83%	78%	0.24	0.75	0.17	0.25
Abduction	86%	82%	0.24	0.80	0.14	0.25
External rotation	84%	82%	0.14	0.80	0.16	0.14