Table 1.

Inter-rater reliability of three tests of muscular functional coordination of the lumbar spine.

Single limb stance right	AJ
JT	Positive	Negative	Not valid	Totals	Percentage agreement	Kappa(κ)
Positive	2	0	0	2	100%	1.0
Negative	0	17	0	17
Not valid	0	0	0	0
Totals	2	17	0	19
Single limb stance left	AJ
JT	Positive	Negative	Not valid	Totals	Percentage agreement	Kappa (κ)
Positive	4	1	0	5	95%	0.88
Negative	0	13	0	13
Not valid	0	0	1	1
Totals	4	14	1	19
Sitting on a ball right	AJ
JT	Positive	Negative	Not valid	Totals	Percentage agreement	Kappa (κ)
Positive	9	2	0	11	89%	0.79
Negative	0	8	0	8
Not valid	0	0	0	0
Totals	9	10	0	19
Sitting on a ball left	AJ
JT	Positive	Negative	Not valid	Totals	Percentage agreement	Kappa (κ)
Positive	12	0	0	12	95%	0.88
Negative	1	6	0	7
Not valid	0	0	0	0
Totals	13	6	0	19
Unilateral pelvic lift right	AJ
JT	Positive	Negative	Not valid	Totals	Percentage agreement	Kappa (κ)
Positive	6	2	0	8	79%	0.61
Negative	2	8	0	10
Not valid	0	0	1	1
Totals	8	10	1	19
Unilateral pelvic lift left	AJ
JT	Positive	Negative	Not valid	Totals	Percentage agreement	Kappa (κ)
Positive	8	3	0	11	74%	0.47
Negative	2	6	0	8
Not valid	0	0	0	0
Totals	10	9	0	19

Right/left means the supported side. Results achieved by rater AJ and rater JT. N = 19