Table 4. Intra-observer agreement^a for new 15-question outcome score for assessing post-encephalitis disability in children, Bellary, India, 2007.

Observer 1		Observer 2
Likely dependence	Final outcome score (sequelae)	Final outcome score (sequelae)b						Likely dependenceb
		II (severe)	III (moderate)	IV (mild)	V (none)	Total		Dependent	Independent	Total
Dependent	II (severe)	28	0	0	1	29		28	1	29
Independent	III (moderate)	2	38	3	4	47		4	155	159
	IV (mild)	2	5	25	7	39
	V (none)	0	0	3	70	73
Total		32	43	31	82	188		32	156	188
Kappa value		0.799 (95% CI: 0.729–0.868)c						0.902 (95% CI: 0.818–0.987)c

CI, confidence interval.

^a Agreement is shown for outcomes classified both in terms of four severity levels of sequelae and in terms of a dichotomous outcome: dependent (i.e. final outcome score: II) or independent (i.e. final outcome score: III–V).

^b One repeat score was omitted and the inter-observer agreement for that item was calculated by comparing one score with the average of two from the second observer.

^c Kappa values were interpreted as follows: 0.0–0.2 poor agreement; 0.21–0.40 fair agreement; 0.41–0.60 moderate agreement; 0.61–0.80 good agreement; and 0.81–1.00 very good agreement.³⁰