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. 2012 Aug 16;33:153–165. doi: 10.1016/j.ijhm.2012.07.008

Table 4.

Cumulative abnormal returns (CARs) for food safety events.

Event window Cumulative abnormal returns (CARs)
t-Statistics p-Value
Mean SD
t0 − t1 −2.483 4.544 −3.456 .001**
t0 − t2 −3.929 5.821 −4.269 .000***
t0 − t3 −3.957 6.508 −3.846 .000***
t0 − t4 −4.408 7.029 −3.966 .000***
t0 − t5 −5.291 8.931 −3.747 .001**
t0 − t10 −5.170 10.514 −3.110 .003**
t0 − t20 −5.392 10.784 −3.162 .003**
t0 − t30 −5.508 12.494 −2.788 .008**
t0 − t57 −6.812 20.386 −2.060 .046*
t0 − t58 −6.623 20.476 −1.994 .054
t0 − t59 −5.656 20.340 −1.714 .095
t0 − t253 −.827 38.293 −.118 .907
t0 − t254 −.405 35.532 −.063 .951
t0 − t255 .756 34.248 .121 .905
t0 − t256 1.296 33.874 .210 .835
t0 − t370 5.008 37.437 .682 .501
t0 − t371 5.568 38.135 .745 .463
*

p < .05.

**

p < .01.

***

p < .001.