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. 2012 Mar 12;2012:104389. doi: 10.1100/2012/104389

Table 2.

Factors and explanatory variables used in the general logistic regression model.

Factors Variables Variables type Abbreviation
Dependent variable Absence/presence Coryphaena bycatches per set Binary CO

Technical characteristics of
the fishery
Number of hooks Quantitative NH
Distance between both extremes of the longline Quantitative DL
Diurnal or nocturnal setting Binary DN
Setting hours Categorical
Drifting surface longliners targeting bluefin tuna Binary LLJAP
Traditional longliners targeting swordfish Binary LLHB
American longliners targeting swordfish Binary LLAM
Drifting surface longliners targeting albacore Binary LLALB
Drifting semipelagic longliners targeting swordfish Binary LLSP
Demersal longliners targeting swordfish Binary LLPB

Geographical location Latitude where the setting started Quantitative LATSS
Longitude where the setting started Quantitative LONGSS
Latitude where the setting finished Quantitative LATFS
Longitude where the setting finished Quantitative LONGFS
Sets over continental shelf Binary SCS

Seasonality (phenology) January Binary JA
February Binary F
March Binary MR
April Binary AP
May Binary MY
June Binary JN
July Binary JL
August Binary AU
September Binary S
October Binary O
November Binary N
December Binary D