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

From: 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

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