. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Pediatr Phys Ther. 2014 Summer;26(2):191–199. doi: 10.1097/PEP.0000000000000037

Table 5.

Percentile Scores, agreement and reliability for the Balance Error Scoring System (BESS). Lower scores indicate better performance on the BESS.

	Percentile
	5	25	50	75	95	Agreement^* and reliability^‡
Firm surface, feet together	0	0	0	0	0	^†
Firm surface, single leg stance	0	1	2	4	7	0.77^*
Firm surface, tandem	0	0	0	1	4	0.79^*
Foam surface, feet together	0	0	0	0	1	0.46^*
Foam surface, single leg stance	2	5	7	10	10	0.68^*
Foam surface, tandem	0	1	3	4	7	0.72^*
Total BESS scores	4	10	13	18	24	0.95^‡

Agreement is measured via weighted kappa (k_w)

^†

Weighted kappa (k_w) could not be calculated because scores did not vary.

^‡

Two-way Mixed Intraclass correlation coefficient (3,1)