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. Author manuscript; available in PMC: 2007 Sep 5.
Published in final edited form as: J Gerontol A Biol Sci Med Sci. 1997 Jan;52(1):M52–M55. doi: 10.1093/gerona/52a.1.m52

Table 2.

Reliability of Physical Performance Measures

6-Minute Walk 25-Foot Walk Sit-to-Stand Stand and Walk Speed (6 min) Speed (25 ft)
Intra-rater* .90 .64 .55 .70 .89 .77
 Examiner 1
 Week 1 (AM/PM)
Intra-rater* .80 .67 .85 .58 .79 .54
 Examiner 1
 Week 2 (AM/PM)
Intra-rater* .84 .57 .33 .58 .84 .45
 Examiner 2
 Week 2 (AM/PM)
Intra-rater AM* .84 .73 .08 .68 .84 .53
 Examiner 1
 Week 1 to Week 2
Intra-rater PM* 76 .72 −.04 .69 .75 .50
 Examiner 1
 Week 1 to Week 2
Inter-rater† .99 .85 .00 .71 .98 .94
 AM
inter-rater† .97 .97 −.07 .96 .96 .83
 PM
*

ICC Model [2.1].

†

ICC Model [3.1].