Table 3.
Homogeneity determination of lipoprotein-associated phospholipase A2 (Lp-PLA2) across the age strata and interaction of Lp-PLA2 with age.
| Chi-squared | p-value | ||||||
|---|---|---|---|---|---|---|---|
| Tests of homogeneity of the odds ratio | |||||||
| Breslow–Day | 6.083 | 0.014 | |||||
| Tarone's | 6.070 | 0.014 | |||||
| Variables | High Lp-PLA2 | Normal Lp-PLA2 | χ2 | r-value | p-value | OR (95% CI) | |
| Interaction test of Lp-PLA2 with age | |||||||
| ≤ 60 (n = 114) | VP (n = 34) | 26 (49.1) | 8 (13.1) | 17.504 | 0.392 | <0.001 | 6.380 (2.548–15.976) |
| > 60 (n = 93) | VP (n = 36) | 21 (42.0) | 15 (34.9) | 0.493 | 0.073 | 0.482 | 1.352 (0.582–3.137) |
| Test for interaction | – | – | – | – | 0.015 | 4.720 (1.358–16.400) | |
VP, vulnerable plaque.