Table 2.

Results of Inter- and intra-observer reliability

Results inter-observer reliability
	Waiters	Pelvic	One leg	One leg	Sitting	Rocking	Rocking	Prone knee	Prone knee	Crook
test	bow	tilt	stance R.	stance L.	Knee ext.	Fx.	Ext.	Bend Ext.	bend Rot.	lying
pair 1
Kappa Coefficient (CI 95%)	0.71 (0.50–0.92)	0.60 (0.36–0.84)	0.56 (0.27–0.85)	0.70 (0.57–0.93)	0.80 (0.61–0.99)	0.68 (0.45–0.91)	0.66 (0.39–0.93)	0.75 (0.52–0.98)	0.62 (0.37–0.87)	0.44 (0.18–0.70)
% Agreement	85.7	80.0	88.0	88.0	90.4	88.0	92.8	97.6	90.5	78.6
Std Error	0.11	0.12	0.14	0.19	0.09	0.18	0.14	0.11	0.13	0.13
P-value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	0.003
pair 2
Kappa (CI 95%)	0.52 (0.29–0.75)	0.70 (0.48–0.92)	0.29 (0.00–0.84)	0.80 (0.54–1.00)	0.64 (0.40–0.88)	0.45 (0.16–0.74)	0.69 (0.37–1.00)	0.19 (0.00–0.42)	0.54 (0.28–0.80)	0.32 (0.10–0.54)
% Agreement	75.0	92.5	97.5	92.5	95.0	90.0	92.5	87.5	87.5	65.0
Std Error	0.12	0.11	0.26	0.13	0.12	0.15	0.17	0.12	0.14	0.11
P-value	< 0.001	< 0.001	0.053	< 0.001	< 0.001	0.004	< 0.001	0.11	0.001	0.012
Kappa Ø	0.62	0.65	0.43	0.65	0.72	0.57	0.68	0.47	0.58	0.38
Results intra-observer reliability
Observer 1
kappa	0.75 (0.55–0.95)	0.80 (0.61–0.99)	0.64 (0.40–0.88)	0.67 (0.44–0–90)	1.0	0.73 (0.44–1.00)	0.22 (0.00–0.64)	0.59 (0.29–0.81)	0.60 (0.31–0.91)	0.84 (0.66–1.00)
% Agreement	97.5	95.0	92.5	87.5	100	97.5	95.0	92.5	92.5	97.5
Std Error	0.10	0.01	0.12	0.12	0.0	0.15	0.24	0.15	0.15	0.09
P-value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	0.16	< 0.001	< 0.001	< 0.001
Observer 2
Kappa (CI 95%)	1.0	0.8 (0.61–0.99)	0.69 (0.29–0.99)	1.0	0.9 (0.77–1.00)	0.70 (0.48–0.92)	0.8 (0.56–1.00)	0.8 (0.62–0.98)	0.95 (0.94–0.96)	0.88 (0.71–1.00)
% Agreement	100	95	100	100	100	97.5	100	92.5	100	97.5
Std Error	0.0	0.09	0.23	0.0	0.07	0.11	0.12	0.94	0.05	0.09
P-value	0.000	< 0.001	< 0.001	0.000	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001
Kappa Ø	0.88	0.80	0.67	0.84	0.95	0.72	0.51	0.70	0.78	0.86