Effects of autism on 30-year outcome of anorexia nervosa

Table 2 Morgan-Russell scale C (Mental state); comparisons between AN and COMP group at follow-up after 6, 10, 18 and 30 years

	Mental state								Singly ordered R × C Contingency Tables
Follow-up	AN group				COMP group				Kruskal–Wallis test	Inference
	Response category				Response category				Test statistic	Exact P value
Carlo	0	4	8	12	0	4	8	12
6-year	1	10	13	27	0	0	8	43	13.72	0.00015
10-year	1	10	14	26	1	2	4	44	13.91	0.00016
18-year	2	10	14	25	1	0	7	43	15.43	0.00006
30-year	2	13	15	17	1	2	8	40	18.71	0.00001

Doubly ordered R × C	Linear-by-linear association test		Stratified R × C Contingency Tables
	Linear-by-linear association test		Cochran–Mantel–Haenszel Test
Inference	Test statistic −1.653	Test statistic −1.147	Test statistic 56.41
	Exact p = 0.1	Exact p < 0.28	Exact p < 0.00001

AN: anorexia nervosa; COMP: comparison; R × C: rows and columns; 6-year: AN study 2 (6-year follow-up); 10-year: AN study 3 (10-year follow-up); 18-year: AN study 4 (18-year follow-up); 30-year: AN study 5 (30-year follow-up)
Raw data are situated in the middle of the table. Results of the initial omnibus test, a stratified Cochran–Mantel–Haenszel test for a singly ordered R × C table, are placed in the lower right corner. Results from the analyses for group differences, Kruskall-Wallis test, at each follow-up are placed to the right of the data. Below the data the analyses for trend within each group (AN or COMP) are shown (Linear-by-Linear Association test)

ISSN: 2050-2974