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Table 1 Results of Cox regression analysis showing effects of the tagging components on survival of the chub mackerel in the experiment under warm conditions

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
Tag presence (Implantation, External, Untagged) Implantation 0.745 0.511 2 11.536 0.003*
External 0.280 0.666
Surgical operation (ventrotomy, pitting, non-surgery) Ventrotomy −0.010 0.950 2 0.960 0.619
Pitting 0.252 0.507
Duration of tag deployments (s)   −0.006 0.007 1 0.784 0.376
Duration of anaesthesia (s)   0.002 0.002 1 1.015 0.314
Body mass (g)   −0.005 0.003 1 4.004 0.045*
  1. * Statistically significant P < 0.05