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 | 3 | 9 | 9 | 30 | 0 | 2 | 11 | 38 | 4.492 | 0.032 (0.027 to 0.036) |
10 year | 2 | 5 | 9 | 35 | 0 | 1 | 12 | 38 | 0.948 | 0.34 (0.33 to 0.35) |
18 year | 2 | 3 | 9 | 37 | 0 | 0 | 4 | 47 | 7.158 | 0.007 (0.005 to 0.009) |
Analysis for time trend doubly ordered r × c contingency tables | Linear-by-linear association test | Linear-by-linear association test | Stratified r × c contingency tables Cochran-Mantel-Haenszel test | |||||||
Test statistic | +1.715 | +2.378 | 15.8 | |||||||
Exact Monte Carlo P | 0.097 | 0.022 | 0 | |||||||
99% CI | 0.09 to 0.104 | 0.018 to 0.025 | 0 to 0.0005 |