Skip to main content

Table 1 Relative (ICC) and absolute (MDC 90 ) reliability estimates over 1 week*

From: A brief 5-item version of the Neck Disability Index shows good psychometric properties

 

ICC (95% CI)

SEM (95% CI)

MDC 90

NDI10

0.92 (0.85, 0.96)

1.95 (1.76, 2.67)

4.5

NDI5

0.91 (0.83, 0.96)

1.15 (0.95, 1.45)

2.7

NDI5 linear

0.89 (0.80, 0.95)

1.05 (0.98, 1.48)

2.4

  1. *: Only those subjects who indicated a stable condition over this period, as indicated by a GPRC of -1, 0, or +1, are included in this analysis (n=36).
Back to article page

Health and Quality of Life Outcomes

ISSN: 1477-7525

Contact us