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Table 2 Comparison of Cox regression models that include and do not include the effect of water temperature

From: Tag attachment success can be temperature dependent: a case study of the chub mackerel Scomber japonicus

Tagging component Parameter estimates   SE df χ 2 P
Model A
 Tag presence (Implantation or Untagged) Implantation 1.148 0.421 1 8.277 0.004*
 Water temperature condition (warm or cold) Warm 2.044 0.723 1 10.550 0.001*
 Duration of tag deployments (s)   −0.007 0.006 1 1.781 0.182
 Duration of anaesthesia (s)   0.003 0.003 1 1.544 0.214
 Body mass (g)   −0.003 0.004 1 0.632 0.426
Model B
 Tag presence (Implantation or untagged) Implantation 0.304 0.291 1 1.128 0.288
 Duration of tag deployments (s)   0.004 0.004 1 1.332 0.248
 Duration of anaesthesia (s)   −0.004 0.002 1 7.509 0.006*
 Body mass (g)   −0.005 0.004 1 1.451 0.228
  1. * Statistically significant P < 0.05