Table 3.
Sensitivity analyses of the association between rs62187992 and tissue factor pathway inhibitor plasma levels in the F5L Family Study and MARTHA Study
F5L Family Study |
MARTHA Study |
|||||
---|---|---|---|---|---|---|
N | Effect (SE) | P | N | Effect (SE) | P | |
Primary analysis | 251 | 0.16 (0.07) | 0.020 | 1033 | 0.13 (0.04) | 6.27 × 10−4 |
Covariate adjustment* | 227 | 0.16 (0.06) | 0.015 | 848 | 0.06 (0.04) | 0.088 |
Males | 125 | 0.26 (0.09) | 0.008 | 349 | 0.11 (0.05) | 0.038 |
Females | 126 | 0.08 (0.09) | 0.363 | 684 | 0.11 (0.05) | 0.022 |
Body mass index < 25 kg m−2 | 108 | 0.15 (0.09) | 0.102 | 524 | 0.15 (0.05) | 0.006 |
Body mass index ≥ 25 kg m−2 | 140 | 0.21 (0.10) | 0.046 | 470 | 0.08 (0.05) | 0.096 |
No history of venous thromboembolism | 234 | 0.19 (0.07) | 0.006 | NA | NA | NA |
History of venous thromboembolism | 15 | 0.05 (0.26) | 0.864 | 1033 | 0.13 (0.04) | 6.27 × 10−4 |
F5L non-carriers | 188 | 0.11 (0.08) | 0.169 | 793 | 0.11 (0.04) | 0.006 |
F5L carriers | 63 | 0.23 (0.14) | 0.103 | 237 | 0.07 (0.09) | 0.436 |
No female hormone therapy use | 225 | 0.17 (0.07) | 0.017 | 966 | 0.11 (0.04) | 0.002 |
No antithrombotic drug use† | 200 | 0.15 (0.07) | 0.046 | 729 | 0.12 (0.04) | 0.004 |
Excluding extreme values‡ | 248 | 0.12 (0.06) | 0.059 | 1028 | 0.11 (0.04) | 0.003 |
F5L, factor V Leiden mutation; NA, not applicable; SE, standard error.
Covariate adjustment included HDL, lipoprotein(a), von Willebrand factor and FVII in the F5L Family Study, and oral contraceptives, F5L, body mass index, von Willebrand factor and protein S in the MARTHA Study. In both study samples, potential covariates were identified from the literature, and associated covariates were identified by backwards model selection.
Antithrombotic medication included vitamin K antagonists and antiplatelet agents.
Extreme values were defined as greater than three times the interquartile range from the third quartile in the study sample from which the individual originated.