Development and evaluation of a tool for the assessment of footwear characteristics

Table 3 Intra-rater reliability for categorical measures.

	% agreement		Kappa
Variable	Rater 1	Rater 2	Rater 1	Rater 2
Fit
Adequate length (palpation)	93	83	0.86	0.41
Adequate length (straw method)	83	77	0.65	0.51
Adequate width	92	93	0.65	0.69
Adequate depth	97	93	0.78	0.00*
General
Age of shoe	97	97	0.92	0.92
Type of shoe	100	100	1.00	1.00
Upper materials	100	98	1.00	0.98
Outsole materials	97	100	0.65	1.00
General structure
Heel height	98	95	0.94	0.83
Forefoot height	93	97	0.78	0.87
Longitudinal profile	100	88	1.00	0.66
Last shape	97	97	0.48	0.65
Fixation (outersole to midsole)	87	85	0.73	0.70
Sole flexion point	98	98	0.91	0.92
Motion control properties
Dual density presence	100	100	1.00	1.00
Fixation (upper to foot)	100	98	1.00	0.93
Heel counter stiffness	96	96	0.87	0.86
Midfoot sagittal stability	92	88	0.78	0.71
Midfoot torsional stability	90	91	0.72	0.67
Cushioning
Cushioning system presence	98	98	0.94	0.95
Lateral/medial midsole hardness	97	98	0.91	0.94
Heel-foot contact hardness	98	95	0.96	0.85
Wear patterns
Upper wear pattern	98	92	0.85	-0.03*
Midsole wear pattern	100	100	1.00	1.00
Tread pattern	100	100	1.00	1.00
Tread wear	100	100	1.00	1.00
Outsole wear pattern	93	92	0.71	0.22*

ISSN: 1757-1146