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Table 5 Morgan-Russell subscale C (mental state); dose–response analysis

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

Dose AN study 2 AN study 3 AN study 4 Analysis for time trend doubly ordered r × c contingency tables Linear-by-linear association test Exact Monte Carlo
Response category Response category Response category Test Statistic P (99% CI)
  0 4 8 12 0 4 8 12 0 4 8 12   
Never ASD 0 4 12 18 0 5 9 20 0 6 8 20 0 1 (0.9995 to 1)
ASD × 1-3 0 3 1 6 0 1 4 5 0 2 3 5 0 1 (0.9995 to 1)
ASD × 4 1 3 0 2 1 3 1 1 2 1 3 0 −0.561 0.69 (0.67 to 0.7)
Dose–response analysis               
Doubly ordered r × c contingency tables Linear-by-linear association test Linear-by-linear association test Linear-by-linear association test Stratified r × c contingency tables Cochran-Mantel-Haenszel test  
Test statistic −1.452 −2.56 −2.787 −4.342  
Exact Monte Carlo P 0.15 0.008 0.007 0.0001  
99% CI 0.14 to 0.16 0.005 to 0.01 0.005 to 0.009 0 to 0.0004  
  1. AN anorexia nervosa, AN study 2 second anorexia nervosa examination, AN study 3 third anorexia nervosa examination, AN study 4 fourth anorexia nervosa examination, ASD autism spectrum disorders, never ASD individuals who had never been assigned an ASD diagnosis, ASD × 1–3 those who had been assigned an ASD diagnosis in at least one study, but not at all four studies, ASD × 4 those with an ASD diagnosis at all four examinations, CI confidence interval, r × c rows and columns.