Effects of autism spectrum disorders on outcome in teenage-onset anorexia nervosa evaluated by the Morgan-Russell outcome assessment schedule: a controlled community-based study

Table 2 Morgan-Russell subscale C (mental state); comparisons between AN and COMP group at 6-, 10- and 18-year follow-up

Follow-up	AN group				COMP group				Singly ordered r × c contingency tables Kruskal-Wallis test	Exact Monte Carlo
	Response category				Response category				Test statistic	P (99% CI)
	0	4	8	12	0	4	8	12
6 year	1	10	13	27	0	0	8	43	13.72	0.0001 (0 to 0.0004)
10 year	1	10	14	26	1	2	4	44	13.91	0 (0 to 0.0005)
18 year	2	10	14	25	1	0	7	43	15.43	0.0001 (0 to 0.0005)
Doubly ordered r × c contingency tables	Linear-by-linear association test				Linear-by-linear association test				Stratified r × c contingency tables
Analysis for time trend									Cochran-Mantel-Haenszel test
Test statistic	−0.4583				−0.3885				39.72
Exact Monte Carlo P	0.69				0.77				0
99% CI	0.67 to 0.7				0.76 to 0.78				0 to 0.0005

AN anorexia nervosa, COMP comparison, CI confidence interval, r × c rows and columns.

ISSN: 2040-2392