Table 2.

Intrareader reliability of the experienced and inexperienced readers for semiquantitative scoring of osteophytes and detection of subchondral cysts

		Inter-reader	Intrareader (experienced)	Intrareader (inexperienced)
Osteophytes (graded)	% agreement weighted κ [95%CI]	61% 0.72 [0.64–0.80]	90% 0.93 [0.83–1.00]	75% 0.79 [0.61–0.96]
Osteophytes (dichotomous)	% agreement weighted κ [95%CI]	91% 0.82 [0.69–0.94]	95% 0.86 [0.59–1.00]	80% 0.61 [0.30–0.93]
Subchondral cysts (dichotomous)	% agreement weighted κ [95%CI]	88% 0.66 [0.46–0.85]	95% 0.83 [0.50–1.00]	100% 1.00 [1.00–1.00]

CI, confidence interval.