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Table 1 Model selection for the descriptive pattern of seasonal trend in questing tick density in 2011 and 2012

From: Temporal pattern of questing tick Ixodes ricinus density at differing elevations in the coastal region of western Norway

Time Elevation Elevation*Time AIC 2011 AIC 2012
df = 1    3728 2834
df = 2    3723 2813
df = 3    3715 2814
df = 4    3718 2816
df = 5    3715 2817
df = 5 X   3687 2809
df = 4 X   3693 2808
df = 3 X   3690 2806
df = 5 X X 3614 2799
df = 4 X X 3640 2798
df = 3 X X NC 2796
  1. All the models use the total tick abundance from each 20-m2 flagging as the response. Time as a natural cubic spline term, and elevation as a two level factor variable where high or low are predictors. df = degrees of freedom in the spline function; * = interaction term; NC = model did not converge. The chosen descriptive model is in bold, for 2012 it was chosen over the best model as visual inspection indicated a better fit.