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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 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)