Table 1
Means (SD), inter- and intraobserver correlations, duplicate errors, and p values of t testing
Observer
Score (systematic differences)
p Value
Interobserver
Correlation
Duplicate error
Cervical spine (n = 26)
1
11.78 (13.32)
0.03
0.99
0.55
2
11.88 (13.48)
Lumbar spine (n = 46)
1
6.12 (11.35)
0.70
0.99
0.99
2
6.36 (11.32)