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Table 7 Cox proportional hazards models examining fish survival for fish tagged in situ (n = 70) at both 4 and 6 days after tagging

From: Under pressure: comparing in situ and boat tagging methods using time-to-event analyses

Days after tagging Hazards model AICc ΔAICc χ2 df p
4 Month 40.38 0.00 3.26 1 0.07
Fish size + month 41.49 1.11 4.51 2 0.10
Handling time 41.65 1.27 2.34 1 0.10
Depth + month 41.99 1.61 3.96 2 0.10
Null 42.19 1.81    
Handling time + fish size 42.30 1.92 3.78 2 0.20
Handling time + family 42.74 2.36 3.25 2 0.20
Fish size + family + month 43.24 2.86 5.05 3 0.20
Depth + family + month 43.76 3.38 4.46 3 0.20
Handling time + fish size + family 43.79 3.41 4.45 3 0.20
Handling time + depth + family 44.77 4.39 3.41 3 0.30
Tagging time + fish size + family + month 45.21 4.83 5.09 4 0.30
Handling time + fish size + surgery count + family 45.57 5.19 4.52 4 0.30
Tagging time + depth + family + month 45.92 5.54 4.49 4 0.30
Handling time + depth + surgery count + family 46.97 6.59 3.44 4 0.50
Tagging time + fish size + surgery count + family + month 47.53 7.15 5.11 5 0.40
6 Fish size + month 57.43 0.00 5.69 2 0.06
Fish size 57.84 0.41 3.17 1 0.08
Handling time + fish size + surgery count 57.87 0.44 5.41 3 0.10
Fish size + surgery count 58.37 0.94 4.45 2 0.10
Month 58.70 1.27 2.03 1 0.20
Null 58.86 1.43    
Fish size + surgery count + month 58.90 1.47 6.48 3 0.09
Depth + month 59.52 2.09 3.5 2 0.20
Handling time + fish size + surgery count + family 59.54 2.11 5.67 4 0.20
Surgery count 60.17 2.74 1.15 1 0.30
Depth + surgery count 60.92 3.49 1.72 2 0.40
Fish size + surgery count + family + month 60.95 3.52 6.68 4 0.20
Depth + surgery count + month 61.02 3.59 3.94 3 0.30
Handling time + depth + surgery count 62.10 4.67 2.32 3 0.50
Tagging time + depth + surgery count + month 62.88 5.45 4.62 4 0.30
Tagging time + fish size + surgery count + family + month 63.19 5.76 7.5 5 0.20
Handling time + depth + surgery count + family 64.08 6.65 2.64 4 0.60
Tagging time + depth + surgery count + family + month 64.97 7.54 4.87 5 0.40
  1. Models are ranked by AICc values. All models include probability of presence as the dependent variable and list independent variables included in each individual model. p-values are from the log-rank test