Table 6 Pairwise comparisons between hazard function of different risk grades
Log rank (Mantel-Cox) | Low risk | Medium risk | High risk | ||||
|---|---|---|---|---|---|---|---|
Chi-square | Sig. | Chi-square | Sig. | Chi-square | Sig. | ||
Risk grade | Low risk | 87.515 | 0.000 | 196.424 | 0.000 | ||
Medium risk | 87.515 | 0.000 | 9.860 | 0.002 | |||
High risk | 196.424 | 0.000 | 9.860 | 0.002 | |||